Table C10.—Number of growing-stock trees by diameter class and species on timberland, central and west Oklahoma, 1989°

Diameter class (2-inch)

All 1.0 3.0- 5.0- 7.0- 9.0- 11.0- 13.0- 15.0- 17.0-
Species classes 29 49 69 Ex) 109 12.9 14.9 16.9 18.9 219.0
cent e ene eee et ence et eee ee ee eee e eee en ee ee el Thousand trees~«++2ce2ccencccrecceccsceeesencseeracesenenee

Easter redcedar 30,986 19,153 7,542 1,515 1,386 941 181 166 62 9 31
Shortleaf pine 325 0 0 0 0 0 187 139 0 0 0
Boxelder 1,408 496 263 99 24 23 159 92 30 11 0
Silver maple 89 0 0 0 0 38 ° 30 22 0 O)
River birch 1,095 m 0 0 141 244 ) 0 0 0 0
Hickory spp. 22,608 7,924 7,683 3,727 1,952 228 387 44 19 30 13
Pecan 13,508 6,506 2,358 1,495 825 450 705 377 344 168 281
Cataipa 75 0 0 0 oO 0 28 0 0 48 oO
Sugarberry 8,944 3,046 1,317 1,309 1,547 810 210 245 119 197 145
Hackberry 14,612 7,366 3,199 1,288 920 589 $72 259 87 172 160
Common persimmon 2,654 1,336 801 139 347 0 20 0 12 0 )
White ash 3,399 3,021 0 99 217 28 0 15 0 0 18
Green ash 8,350 3,160 263 1,273 1,429 901 586 192 255 u7 176
Honeylocust 378 179 351 119 102 58 0 0 $1 0 17
Kentucky coffeetree 2,077 1,658 0 151 65 44 68 66 0 10 16
Butternut 133 0 0 100 0 ) 0 0 16 0 17
Black walnut 4,785 1,504 849 937 587 350 206 146 n2 47 88
Osage-orange 7,120 179 3,525 2,882 387 100 0 18 12 0 17
Red mulberry 427 0 220 0 n 64 ) Ww 0 47 8g
American sycamore 2,693 596 1,400 141 70 186 86 0 47 n 97
Cottonwood 1,911 0 ) 201 629 285 ul 61 69 78 479
Souther red oak 399 0 348 0 0 50 0 0 ° 0 0
Bur oak 1,327 472 0 181 143 35 3 102 80 21 238
Chinkapin oak 1,750 0 232 312 366 444 196 37 63 ul 38
Pin oak 1,673 899 233 243 59 0 39 64 36 38 62
Northem red oak 1,538 282 0 0 430 176 327 4 163 19 66
Shumard oak 13,264 4,978 5,554 449 703 381 540 327 200 rt ng
Post oak 59,379 17,884 19,924 8,874 5,287 4,052 1,747 576 565 241 230
Black oak 2,933 125 447 1,125 518 281 238 65 41 87 6
Black locust 431 431 0 ) 0 0 0 0 0 0 0
Willow 2,842 213 1,953 2 184 136 89 83 n 10 u
Winged elm 12,875 6,042 2,215 3,058 657 565 322 0 0 0 16
American elm 10,632 2474 3,398 1,412 1,498 921 n 391 164 129 174
Cedar elm 142 CY) 0 0 0 142 ) 0 0 0 0
Siberian elm 1,764 19 199 166 0 0 0 0 0 0 0
Slippery elm 2,234 482 $13 494 145 an 134 18 27 156 2B

All species 241,260 91,886 65,389 31,880 20,900 13,412 7,239 3,607 2,628 1,724 2,594

*Numbers in rows and columns may not sum to totals due to rounding.


Rosson, James F., Jr. 1995. The timberland and woodland resources of
central and west Oklahoma, 1989. Resour. Bull. SO-193. New Orleans,
LA: U.S. Department of Agriculture, Forest Service, Southern Forest
Experiment Station. 35 p.

Principal findings of the first forest survey of central and west Oklahoma
are presented. Topics examined include forest area, forest types, stand
structure, basal area, timber volume, growth, and mortality. Information
is presented for timberland and woodland forests.

Keywords: Forest inventory, forest productivity, forest survey,
large- scale sample.



Appendix C—Timberland Tables

Table Cl.—Area of timberland by forest type and county, central and west Oklahoma, 1989*

Forest type
‘Sugarberry- Sycamore-
All Easter Shortleaf pine- Post osk- _Ouk- Other, American clm- Pecan: Other
County types redcedar oak blackjack oak hickory upland! green ash American elm bottomland!

Beckham 48 0.0 0.0 0.0 0.0 0.0 24 0.0 24
Blaine 159 95 0.0 32 3.2 0.0 0.0 0.0 0.0
Caddo 179 0.0 0.0 10.4 0.0 00 38 0.0 38
Canadian 145 3.6 0.0 0.0 0.0 36 73 0.0 0.0
Carter 311 10.4 0.0 10.4 10.4 0.0 0.0 0.0 0.0
Cleveland 748 0.0 0.0 36.3 145° 145 0.0 0.0 94
Commanche Ba 0.0 0.0 33 28 0.0 0.0 123 0.0
Cotton 24 0.0 0.0 0.0 00 = 0.0 24 0.0 0.0
Craig 249 0.0 0.0 37 73 37 103 0.0 0.0
Creek 129.6 0.0 0.0 68.8 459 00 129 21 0.0
Dewey 18.6 6.2 0.0 6.2 0.0 62 0.0 0.0 0.0
Garfield 67 0.0 0.0 42 0.0 0.0 0.0 25 0.0
Garvin 12.1 0.0 0.0 42 0.0 0.0 19 0.0 0.0
Grady 12.6 0.0 0.0 1S 0.0 0.0 3.1 0.0 0.0
Hughes 68.7 0.0 93 93 18.5 185 87 44 0.0
Jefferson 128 0.0 0.0 0.0 0.0 0.0 43 85 0.0
Johnston 29.2 0.0 0.0 67 67 133 26 0.0 0.0
Kay 23 0.0 0.0 0.0 0.0 0.0 23 0.0 0.0
Kingfisher 103 0.0 0.0 0.0 0.0 SA 0.0 52 0.0
Lincoln 54.7 0.0 0.0 8.4 25.1 0.0 212 0.0 0.0
Logan 51.6 17.4 0.0 0.0 174 87 8.0 0.0 0.0
Love 23.2 0.0 0.0 87 0.0 87 0.0 0.0 5.8
McClain 172 0.0 0.0 0.0 19 0.0 23 23 47
Major 27 43 0.0 10.8 43 43 0.0 0.0 0.0
Marshall 38 0.0 00 0.0 38 0.0 0.0 0.0 0.0
Noble 23.2 0.0 0.0 37 0.0 0.0 4 81 0.0
Nowata 40.7 0.0 0.0 12 2.5 25 6.8 38 38
Okfuskee 54.5 0.0 0.0 78 B3 15.5 27 53 0.0
Oklahoma $4.2 0.0 0.0 19.5 97 97 122 0.0 31
Okmulgee 99.2 0.0 0.0 26.8 35.7 89 16 10.2 0.0
Osage 122.1 89 0.0 445 445 0.0 243 0.0 0.0
Pawnee 33.2 0.0 0.0 0.0 207 «69 56 0.0 0.0
Payne 32.7 00 0.0 0.0 12°°«(144 2 0.0 0.0
Pontotoc 22.2 0.0 0.0 10.6 10.6 0.0 09 0.0 0.0
Pottawatomie 16.7 0.0 0.0 69 0.0 0.0 49 49 0.0
Roger Mills 14 0.0 0.0 0.0 0.0 0.0 14 0.0 0.0
Rogers 28 0.0 0.0 0.0 1s 0.0 13 0.0 0.0
Seminole 25.0 0.0 0.0 10.5 0.0 10.5 14 14 14
Stephens 37.1 0.0 0.0 212 0.0 0.0 49 49 0.0
Tulsa 39 0.0 0.0 0.0 0.0 0.0 2.0 20 0.0
Wagoner 313 0.0 0.0 74 14 14 15.4 0.0 0.0
Washington 29.9 0.0 0.0 25 16 25 172 0.0 0.0
Washita 48 0.0 0.0 0.0 0.0 0.0 48 0.0 0.0
Allcounties 1,338.1 60.4 93 375.4 348.4 164.9 267.4 78.0 343

“Numbers in rows and columns may not sum to totals due to rounding.
‘Stands dominated by successional species that do not readily type into SAF forest types. Examples are: Osage-orange, boxelder,
Kentucky coffeetree, red mulberry, honeylocust, catalpa, winged elm, Siberian elm, silver maple, etc.

13


Table C14.—Volume of sawtimber by diam

rr class and species on timberland, central and west Oklahoma, 1989*

Diameter class (2-inch)

All 9.0- 11.0- 13.0- 15.0- 17.0-
Species classes 10.9 129 149 16.9 189 219.0
“Million board feet!

Eastem redcedar $5.7 202 62 12.7
Shortleaf pine 223 0.0 113 11.0
Boxelder 19.0 0.0 68 70
Silver maple S.A 0.0 0.0 2.2
Hickory spp. 34.1 0.0 183 44
Pecan 267.1 0.0 374 33.6
Catalpa 78 0.0 07 0.0
Sugarberry 103.5 0.0 98 18.0
1374 0.0 214 18.0

Common persimmon 26 0.0 11 0.0
White ash 58 0.0 0.0 08
Green ash 131.2 0.0 24.8 15.7
Honeylocust 86 0.0 0.0 0.0
Kentucky coffeetree 14.5 0.0 22 3.4
Butternut 5.6 0.0 0.0 0.0
Black walnut 793 0.0 124 12.6
Osage-orange 10 0.0 0.0 10
Red mulberry 69 0.0 0.0 07
American sycamore R25 0.0 LI 0.0
Cottonwood 292.8 0.0 62 6.0
Bur oak 114.7 0.0 16 75
Chinkapin oak 46.1 0.0 719 3.0
Pin oak 422 0.0 18 $A
Northern red oak 17 0.0 176 58
‘Shumard oak 125.7 0.0 219 263
Post oak 216.5 0.0 169 $0.2
Black oak 38.2 0.0 12.4 62
Willow 246 0.0 53 62
Winged elm 148 0.0 10.4 00
American elm 99.6 0.0 34 198
Slippery elm 379 0.0 31 Li
All species 2,170.9 20.2 324.1 280.1

*Numbers in rows and columns may not sum to totals due to rounding.

Tintemational 1/4-inch Rule,

Table C15.—Volume of timber by class of timber and forest type on timberland, central and west Oklahoma, 1989*

Class of timber
Rough Rotten
All Growing-stock Growing-stock —_poletimber and __poletimber and
Forest type classes poletimber sawtimber sawtimber sawtimber
wee e eee cece ence eens “Million cubic feet ----+---+++-+--+---------

Easter redcedar 318 13 12.7 10.7 La
Shortleaf pine-oak 10.6 16 47 37 06
Post oak-blackjack oak 161.5 316 24,5 103.0 24
Oak-hickory 206.6 62.7 56.7 773 98
Other upland? 145.4 42.1 68.7 316 31
Sugarberry-American

elm-green ash 303.5 603 m1 609 M2
Sycamore-pecan-

‘American elm 668 129 35.6 158 24
Other bottomland* 372 13 174 121 02

All types 963.4 226.0 391.4 315.2 308

*Numbers in rows and columns may not sum to totals due to rounding.
tStand dominated by successional species that do not readily type into SAF forest types. Examples are: Osage-
orange, boxelder, Kentucky coffeetree, red mulberry, honeylocust, catalpa, winged elm, Siberian elm, silver

maple, etc.

23


Figure 1.— Counties of central and west Oklahoma where sample plots were measured, 1989, are shown by shaded areas.

Expansion factors for each plot were based upon the
original NRCS acreage assignment. The total acreage
of forest land for each county was divided by the num-
ber of randomly selected plots per respective county
to derive the forest area expansion factor for each plot.
This method maintained the original weighting for the
two selected strata derived by the NRCS.

One departure by MIDSO-FIA from the 1982 NRI
was the assignment of productivity classes and the
subsequent classification of forest land as timberland
or woodland. As mentioned previously, the NRCS iden-
tified only forest land; MIDSO-FIA used this forest
land base and classified each plot as timberland or
woodland. (Woodland is forest land incapable of pro-
ducing 20 ft?/acre of industrial wood under natural
conditions because of adverse site conditions.) To de-
termine whether a plot was woodland or timberland,
dominant and codominant trees were screened by age
and height and applied to potential yield tables.

Yield classes for normally stocked upland or bottom-
land stands in the Southern United States were used
to determine yield. Yield tables reflecting stand con-
ditions for specific species in central and west Okla-
homa were not available; therefore, the estimates of
timberland and woodland area (based upon yield) were
difficult to define with certainty.

At each randomly selected PSU point, a MIDSO-
FIA forest survey plot was installed. Five satellite
points, spaced 66 ft apart, were laid out (fig. 3). Trees
25.0 inches in diameter at breast height (d.b.h.) were
selected with a 37.5 basal area factor prism at all five

satellite points; thus, each tree represented 7.5 ft? of
basal area. Trees <5.0 inches in d.b.h. were tallied on
a 1/275-acre circular plot established on the first three
points of the five-point cluster.

Volumes in central and west Oklahoma were derived
from fixed-form regression equations involving diam-
eter squared times bole length. Coefficients were de-
rived from deterministic measurements made on all
trees sampled in the Northeast and Southeast survey
units during the regular survey conducted in 1986.
The deterministic measurements included d.b.h., to-
tal tree height, bole length, log length, and four upper-
stem diameters.

The 1982 NRI did not sample Federal lands, so these
acres of forest land were not reflected in this study.
Also, a private ownership breakdown was not done
because of the problem with randomly stratifying and
weighting each ownership category by county. With
only 387 plots, the plot selection process would have
been compromised.

Growth measurements and computations were
slightly altered from those normally reported by
MIDSO-FIA. (For routine MIDSO-FIA methodology,
see Van Deusen and others 1986, May 1988.) Because
this was a one-time measurement, all sample trees
were bored to determine growth for the past 10-year
period. Harvested trees were not included in the ob-
servations. Also, only mortality trees that had recently
died were tallied; trees that died more than 3 to 5 years
before this survey was begun were probably missed
in the sampling process because measurable evidence


Table D16.—Volume of timber by tree grade and species on woodland, cen-
tral and west Oklahoma, 1989*

Tree grade!
Species All grades No. 1 No.2
---+Million board feet. -
Eastern redcedar 11.0 11.0
Hickory spp. 179 0.0
Pecan 97 0.0
Green ash 128 0.0
Shumard oak 09 0.0
Post oak 596.5 413
Black oak 214 0.0
Willow 3.7 0.0
Winged elm 69 0.0
American elm 18 00
All species 694.4 52.3
*Numbers in rows and columns may not sum to totals due to rounding.
tSee appendix A for definition.
*ntemnational 1/4-inch Rule.

Table D17.—Components of average annual growth* and average annual mortality* of growing stock on woodland
by species group, central and west Okiahoma, 1989'

Component

Gross Net | Survivor Growth
Species group growtht growth’ growth Nongrowth Ingrowth Ongrowth on mortality Mortality

“Million cubic feet ~~ =~
Softwood O1 0.0
Hardwood 27 1
All species 17 16 2.0 28 0.1

*Based on previous 10 years growth.

TNumbers in rows and columns may not sum to totals due to rounding.

4Gross growth = survivor growth + nongrowth + ingrowth + ongrowth + growth on mortality,

5Net growth = survivor growth + nongrowth + ingrowth + ongrowth + growth on mortality - mortality.

Table D18.—Components of average annual growth* and average annual mortality* of sawtimber on woodland by
species group, central and west Oklahoma, 1989"

Component
Gross, Net. Survivor Growth
Species group growth? growth! growth Nongrowth Ingrowth Ongrowth on mortality Mortality
Deeeee ne ee ence teen eeeeeee “Million board feet"
Softwood 03 0.3 0.1 0.0 0.0
Hardwood 213 20.9 45 29 11.6
All species 21.6 21.2 46 29 11.6

*Based on previous 10 years growth.

tNumbers in rows and columns may not sum to totals due to rounding.

Gross growth = survivor growth + nongrowth + ingrowth + ongrowth + growth on mortality.

§Net growth = survivor growth + nongrowth + ingrowth + ongrowth + growth on mortality - mortality.
‘intemational 1/4-inch Rule.


20

Table Cil.—Volume of timber on timberiand by species and class of timber,

central and west Oklahoma, 1989*
Tree class

all Growing Rough and
Speciest live stock rotten,

eee e een eee -Million cubic feet -----------
Post oak 1945 1144 79.8
Blackjack oak 109.1 0.0 109.1
Pecan 741 $9.4 14.7
American elm 54.4 303 24.1
Cottonwood 519 479 40
Green ash 443 40.4 39
Hickory spp. 42.9 29.7 13.2
Hackberry 42.6 373 33
Sugarberry 35.9 30.4 35
‘Shumard oak 35.1 30.1 3.0
Black walnut 311 24.0 At
Eastem redcedar 227 21.2 1s
Winged elm 22.4 145 19
Bur oak 20.7 18.9 18
Norther red oak 19.4 163 32
Chinkapin oak 18.1 12.7 3.4
Slippery elm 15.5 10.5 5.0
Boxelder 149 55 9.4
Black oak 13.7 12.4 13
Osage-orange 13.6 9.4 41
Willow 133 cat 61
American sycamore 13.2 13.1 O1
Pin oak 10.4 87 17
Unlisted trees 13 0.0 73
Chittamwood, gum bumelia 6.4 0.0 64
Shortleaf pine 59 47 12
Kentucky coffeetree 37 37 0.0
Red mulberry 3.4 21 12
White ash 3.2 23 09
Honeylocust 3.0 22 08
Catalpa 26 13 13
Siberian elm 24 04 21
Common persimmon 24 2.0 03
White oak 19 0.0 19
Silver maple 17 14 03
‘Chinaberry 14 0.0 14
River birch 12 12 0.0
Butternut 09 09 0.0
Southem red oak 08 04 03
White mulberry 0.7 0.0 0.7
Cedar elm 06 0.6 0.0
Black locust 02 0.0 0.2
Eastern redbud 0.2 0.0 01
Plums and cherries Ol 0.0 OL
All species 963.4 617.4 345.9

*Numbers in rows and columns may not sum to totals due to rounding.

tRanked by live volume.


26

Appendix D—Woodland Tables

Table Dl.—Area of woodland by forest type and county, central and west Okdahoma, 1989*
Forest type

Sugarberry-  Sycamore-
All Eastern Shortleaf pine- Postoak- © Oak- Other, American elm- _Pecan- Other
County types _redcedar oak blackjack oak hickory upland’ green ash American elm bottomland!

Stephens
Tulsa
Washington
Woodward

All counties 908.7 33.9 0.0 874.8 0.0 0.0 0.0 0.0 0.0

*Numbers in rows and columns may not sum to totals due to rounding.
tStands dominated by successional species that do not readily type into SAF forest types. Examples are: Osage-orange, boxelder,
Kentucky coffeetree, red mulberry, honeylocust, catalpa, winged wim, Siberian elm, silver maple, etc.


Table C13.—Volume of growing stock by diameter class and species on timberland, central and west Oklahoma, 1989*
Diameter class (2-inch)

All 3.0- 7.0- 9.0- 11.0- 13.0- 15.0- 17.0-

Species classes 69 a9 10.9 129 149 16.9 18.9 219.0
Eastern redcedar 21.2 25 5.3 39 16 28 16 0.5 12
Shortleaf pine 47 0.0 0.0 0.0 25 24 0.0 0.0 0.0
Boxelder 55 03 10 0.1 19 13 0s 04 0.0
Silver maple 14 0.0 0.0 03 0.0 0.5 0.6 0.0 0.0
River birch 12 0.0 04 09 0.0 0.0 0.0 0.0 0.0
Hickory spp. 29.7 o1 78 53 47 09 03 10 06
Pecan 59.4 31 37 41 86 69 9.6 57 17.7
Catalpa 13 0.0 0.0 0.0 02 0.0 0.0 Lk 00
Sugarberry 30.4 21 5.1 41 22 40 24 3.6 69
373 25 33 43 58 38 22 6.6 89

Common persimmon 20 0s 1.0 0.0 03 0.0 03 0.0 0.0
White ash 23 02 13 0.1 0.0 02 0.0 0.0 06
Green ash 40.4 22 49 66 6.4 34 S.A 33 aS
Honeylocust 22 02 03 02 0.0 0.0 0.7 0.0 07
Kentucky coffeetree 37 04 02 03 0s 09 0.0 03 10
Butternut 09 0.1 0.0 0.0 0.0 0.0 02 0.0 07
Black walnut 240 32 3.0 3.0 3.1 25 7 2.0 54
Osage-orange 94 67 LL 0.5 0.0 0.1 0.2 0.0 09
Red mulberry 21 0.0 03 0.5 0.0 02 0.0 09 03
American sycamore 13.1 02 0.4 15 0.3 0.0 0.7 18 82
Cottonwood 479 07 38 3.0 16 LL 17 19 34.1
Southern red oak 04 0.0 0.0 04 0.0 0.0 0.0 0.0 0.0
Bur oak 18.9 04 03 04 04 1s 16 08 13.6
Chinkapin oak 127 04 14 26 19 06 16 03 39
Pin oak &7 04 04 0.0 Os 1 13 14 37
Northem red oak 163 00 17 LI 40 13 40 06 3.6
Shumard oak 30.1 07 28 22 $1 5.6 38 0.4 95
Post oak 44 177 187 26.5 16.4 97 10.6 6.1 37
Black oak 12.4 19 17 1.6 21 13 1.0 23 0.4
Willow 7 03 07 12 13 14 17 0.2 0.4
Winged elm 14.5 56 23 29 3.0 0.0 0.0 0.0 06
American elm 30.3 34 49 53 08 40 2.2 3.2 65
Cedar elm 0.6 0.0 0.0 06 0.0 0.0 0.0 0.0 0.0
Siberian elm 0.4 04 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Slippery elm 10.5 Li 0.5 19 13 03 0s 3.6 14
All species 617.4 63 783 873 162 575 56.1 48.0 147.8

*Numbers in rows and columns may not sum to totals due to rounding.

22


Table D19.—Sampling errors for growing-stock volume, grow-
ing-stock growth, and sawtimber volume by county
fer woodland, central and west Oklahoma, 1989*

Growing-stock  Growing-stock  Sawtimber

County volume growth volume
poet e eee ners eee -Percent --+-+-----------

Caddo t t 1
Canadian t 142 t
Carter 40.9 t
Comanche 28.8 t 344
Craig 0.0 0.0 0.9
Creek 28.3 49.5 t
Dewey 0.0 0.0 0.0
Garfield 0.0 0.0 0.0
0.0 0.0 0.0

Hughes 30.2 383 33.2
Jefferson 449 t 364
Johnston t t 1
Kingfisher 0.0 0.0 0.9
Lincoln 31.4 34.4 u
Logan 0.9 0.9 0.9
Love t t t
Major u t 0.0
Marshall 0.0 0.0 0.9
Noble 116 43.9 1
Nowata 17.1 3.4 410
‘Okfuskee 10.1 ' 378
‘Oklahoma 33.8 373 '
Okmulgee 36.5 1 t
Osage 21.0 32.2 417
Pawnee 32.0 ' 417
Payne 24.2 309 18
Pontotoc 32.5 t 276
Pottawatomie 46.0 t '
Rogers 1S 40.5 1
Seminole 9.0 Bo 242
Stephens t 47.0 t
Tulsa 42.0 t 0.0
Washington 0.0 0.0 0.0
Woodward 0.0 0.0 0.0
Allcounties 9.0 12.5 13.5

*See definition of sampling error in appendix A.
t Sampling error greater than 50 percent.


Table C7.—Area of timberland by percentage of growing-stock trees and cull trees, central and west Oklahoma,

. Cull trees percent stocking
Growing-stock
trees Total 0-10 10-20 20-30 30-40 40-50 50-60 60+
Percent stocking ------------+------+000+ Thousand acres ---=----=----=----2---0-0-----
0-10 182.3 0.0 21 0.0 11.0 16.4 49 1479
10-20 109.7 0.0 0.0 0.0 0.0 0.0 20.4 89.3
20-30 158.2 0.0 0.0 5.3 122 21 15.8 122.8
30-40 149.4 0.0 0.0 57 62 38 26.8 107.0
40-50 102.3 12 27 5.2 0.0 183 29.5 45.4
50-60 82.1 16.8 37 5.6 16.3 18.6 13.6 16
60-70 104.6 Td 126 12.2 23.4 19.2 25 274
70-80 123.4 28.6 22.8 15 24.5 322 38 0.0
80-90 93.4 38.9 17.6 12.6 93 31 12.0 0.0
90-100 97.2 59.1 25.0 0.0 58 0.0 72 0.0
100-110 40.5 248 98 27 0.0 0.0 3.2 0.0
110-120 3L1 6.6 68 17.8 0.0 0.0 0.0 0.0
120-130 29.7 12.0 13.3 12 3.2 0.0 0.0 0.0
130-140 12.5 125 0.0 0.0 0.0 0.0 0.0 0.0
140-150 2.7 21.7 0.0 0.0 0.0 0.0 0.0 0.0
150-160 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
160+ 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Total 1,338.1 229.4 116.3 79.7 119 113.7 139.6 $47.4

*Numbers in rows and columns may not sum to totals due to rounding.

Table C8.—Average basal area of live trees on timberland by tree class, species group, and tree size class, central
and west Oklahoma, 1989*

Softwood Hardwood
All Sapling- Sapling-
Tree classes species seedling Poletimber_Sawtimber _scedling _Poletimber_Sawtimber
“Square feet per acre-
Growing stock 38.4 07 0.6 10 47 14.1 173
Rough and rotten _36.4 a1 02 1 &7 16.4 110
Total 748 08 0.7 10 13.5 30.5 28.2

*Numbers in rows and columns may not sum to totals due to rounding.



Appendix A—Definition of Terms

DEFINITION OF TERMS

Classes of Trees Used in Growth Computations

Ingrowth trees—Submerchantable-and-in 10 years
ago and merchantable-and-in at current measurement.

Mortality trees—Merchantable-and-in 10 years ago
and dead prior to current measurement.

Nongrowth trees—Merchantable-and-out 10 years
ago and merchantable-and-in at current measurement.

Ongrowth trees—Submerchantable-and-out 10
years ago and merchantable-and-in at current mea-
surement.

Survivor trees—Merchantable-and-in 10 years ago
and at current measurement.

Dimension Classes of Trees

Poletimber trees—Softwoods 5.0 inches to 8.9 inches
in diameter at breast height (d.b.h.) and hardwoods
5.0 to 10.9 inches in d.b.h.

Rough, rotten, and salvable dead trees—See “Tree
Classes.”

Saplings—Trees 1.0 inch to 4.9 inches in d.b.h.

Sawtimber trees—Trees 9.0 inches and larger in
d.b.h. for softwoods and 11.0 inches and larger for
hardwoods.

Seedlings—Trees less than 1.0 inch in d.b.h. and
greater than 1 foot tall for hardwoods and greater than
6 inches tall for softwoods.

Forest Land Classes

Forest land—Land at least 10 percent stocked by
forest trees of any size, or formerly having such tree
cover, and not currently developed for nonforest uses.
Minimum area considered for classification is 1 acre.
Forest land is divided into timberland and woodland.

Timberland—Forest land that is producing, or is
capable of producing, crops of industrial wood and is
not withdrawn from timber utilization.

Woodland—Forest land incapable of yielding crops
of industrial wood because of adverse site conditions;
must produce 20 ft/acre/year gross growth of grow-
ing stock.

Forest Types

Eastern redcedar—Forests in which eastern red-
cedar comprises a plurality of the stocking.

8

Shortleaf pine-oak—Forests in which shortleaf pine
and upland oaks, singly or in combination, comprise a
plurality of the stocking.

Post oak-blackjack oak—Forests in which post oak
and blackjack oak, singly or in combination, comprise
a plurality of the stocking on upland sites.

Oak-hickory—Forests in which upland oaks and
hickories, singly or in combination, comprise a plu-
rality of the stocking on upland sites.

Sugarberry-American elm-green ash—Forests in
which sugarberry and American elm, singly or in com-
bination, comprise a plurality of the stocking on bot-
tomland sites. A common associate is green ash.

Sycamore-pecan-American elm—Forests in which
American sycamore and pecan, singly or in combina-
tion, comprise a plurality of the stocking on bottom-
land sites. A common associate is American elm.

Growth Classes

Gross growth—Total increase in stand volume com-
puted on growing-stock trees at least 5.0 inches in
d.b.h. Gross growth equals survivor growth, plus
nongrowth, plus ingrowth, plus ongrowth, plus growth
on mortality. Gross growth includes mortality.

Net growth—Increase in stand volume computed on
growing-stock trees at least 5.0 inches in d.b.h. Net
growth is equal to gross growth minus mortality.

Miscellaneous Definitions

Average annual mortality—Average annual sound-
wood volume of growing-stock or live trees that died
from natural causes for the intersurvey period.

Average net annual growth—Average net annual
volume increase of growing-stock or live trees for the
intersurvey period.

Basal area—The area in square feet of the cross
section at breast height of a single tree or of all the trees
in a stand, usually expressed in square feet per acre.

D.b.h. (diameter at breast height)—Tree diameter
in inches, outside bark, usually measured at 4.5 feet
above ground.

Diameter classes—The 2-inch diameter classes ex-
tend from 1.0 inch below to 0.9 inch above the stated
midpoint. Thus, the 12-inch class includes trees 11.0
inches through 12.9 inches in d.b.h.

D.0.b. (diameter outside bark)—Stem diameter in-
cluding bark.


Table D11.—Volume of timber on woodland by species and class of timber,
central and west Oklahoma, 1989*

Tree class
All Growing Rough and
Species! live stock rotten
- Million cubic feet ~
Post oak 385.8 256.5
Blackjack oak 39.5 0.0
Black oak 272 15.5
Hickory spp. 15.4 13.9
Green ash 84 84
‘Shumard oak 66 15
Winged elm 58 49
Eastern redcedar 39 37
Chittamwood gum bumelia 2.9 0.0
Pecan 25 20
Unlisted trees 24 0.0
Chinkapin oak 19 19
American elm 7 Lt
Northern red oak 1.6 07
Slippery elm 16 16
White ash 16 0.0
Willow 13 0.9
Hackberry 0.9 0.0
Red mulberry 0.8 0.0
Swamp chesinut oak 08 08
Live oak 04 0.9
Sugarberry + +
Black walnut + 0.0
All species 513.4 313.5 199.9

*Numbers in rows and columns may not sum to totals due to rounding.
TRanked by live volume.
F Volume >0.0 but <0.1 million cubic feet.

Table D12.—Volume of live trees by diameter class and species on woodland, central and west Oklahoma, 1989*
Diameter class (2-inch)

alt 3.0- 7.0 9.0- 11:0- 13.0- 15.0- 170-
Species classes 69 Ex) 109 129 149 169 189 219.0
= -Million cubic feet -- --

Eastem redcedar 39 12 Os 03 0.3
Chittamwood, gum bumelia 29 08 08 09 0.4
Hickory spp. 15.4 31 3.5 42 0.6
Pecan 25 0s 0.0 0.0 0.0
Sugarberry 0.0 0.0 0.0 0.0 0.0
Hackberry 09 03 0.0 0.6 0.0
White ash 16 Ll 0s 0.0 0.0
Green ash a4 16 LS 23 23
Black walnut 0.0 0.0 0.0 0.0 0.0
Red mulberry 08 0.0 0.0 0.0 0.0
Blackjack oak 39.5 10.0 14.0 1S 5.0
Swamp chestnut oak 08 0.8 0.0 0.0 0.0
Chinkapin oak 19 0.5 L4 0.0 0.0
Northem red oak 1.6 0.0 0.7 0.0 09
Shumard oak 6.6 0.0 20 3.0 0.0
Post oak 385.8 60.0 82.6 66.8 35.2
Black oak 27.2 0.7 46 88 3.5
Live oak 0.4 0.0 0.0 0.0 04
Willow 13 0.0 0.0 0.0 13
Winged elm 5.8 19 17 0.0 23
American elm 17 0.0 0.0 0.0 0.0
Slippery elm 16 0.0 08 08 0.0
Others 2.4 0.5 0.0 0.4 1.0

Alll species 513.4 82.9 116.7 95.7 73.4

*Numbers in rows and columns may not sum to totals due to rounding.

32


Table D6.—Area of woodland by basal area class and forest type, central and west Okla-

homa, 1989*
Basal area class (ff /acre)"
Alt 30- 60- 90-
Forest type classes <0 59 89 119-2120
Toseeeeeeeeeeseee Thousand acres
Eastem redoedar 33.9 9 Ld 22 85 22 0.0
Post oak-blackjack oak 874.8 29.1 2343 430.4 149.3 31.6
All types 908.7 50.2 236.5 439.0 151.4 31.6

* Numbers in rows and columns may not sum to totals due to rounding.
TAll live trees.

Table D7.—Area of woodland by percentage of growing-stock trees and cull trees, central and west Oklahoma, 1989*
Cull trees percent stocking

Growing-stock

trees Total O-10—=—«'10-20 20-30 30-40 40-50_——«50-60 60+
Percent stocking ----------+-+++2-2-0e2e---- Thousand acres

0-10 93.6 0.0 0.0 0.0 0.0 43 0.0 29.3
10-20 86.8 0.0 0.0 0.0 00 0.0 0.0 86.8
20-30 69.3 0.0 0.0 0.0 0.0 173 10.4 4Ls
30-40 M41 18 10.4 28 288 185 180 219
40-50 49.2 0.0 0.0 18 0.0 15.8 &7 169
50-60 1003 0.0 182 216 93 25.1 97 10.5
60-70 117.0 26.6 93 15 89 30.2 22.2 a4
70-80 886 20.9 67 0.0 117 29.0 10.5 9.7
80-90 89.3 56.0 1L5 37 72 26 a4 0.0
90-100 33.1 237 © «19.8 0.0 28 00 69 00
100-110 243 2.1 0.0 12 0.0 0.0 0.0 0.0
110-120 13.9 127 0.0 12 00 0.0 0.0 0.0
120-130 93 0.0 93 0.0 00 0.0 0.0 0.0
130-140 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
140-150 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
150-160 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
160+ 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Total 9087 170.6 85.0 $5.8 686 «1428 948 291.1

“Numbers in rows and columns may not sum to totals due to rounding.

‘Table D8.—Average basal area of live trees on woodland by tree class, species group, and tree size class, central
and west Oklahoma, 1989*

Softwood Hardwood
All Sapling- Sapling-
Tree classes species seedling Poletimber__Sawtimber _ seedling _Poletimber _Sawtimber
Teccsnececeneeeeeee == “Square feet per acre

Growing stock 37.1 0.6 0.2 03
Rough and rotten 32.6 0.2 0.1 0.0
Total 69.8 08 0.3 0.3

Numbers in rows and columns may not sum to totals due to rounding.


z

66 FEET
~ [er POINTS
a
S
i
!
1
'
|
!
1

N
~

\. 4

5

‘¢

POINT ONE COINCIDES WITH THE
PRIMARY SAMPLE UNIT LOCATION

Figure 3.— Sample plot design, showing the five satellite points at
a primary sampling unit (PSU) point location, central
and west Oklahoma, 1989.

Average basal area for central and west Oklahoma
timberland was 74.8 ft?/acre. Again, when cull trees
are excluded, only 38.4 ft?/acre was left in growing-
stock trees.

Total live-tree volume was 963.4 million ft, 720.0
ft?/acre. Of this volume, 36 percent was in rough and
rotten trees, leaving 617.4 million ft? in growing stock.
Post oak and blackjack oak were the dominant trees
(by volume). Post oak made up 20 percent of live-tree
volume and blackjack oak, 11 percent; post oak also
made up 19 percent of total growing-stock volume.
Most of the growing-stock volume in post oak was in
the 5.0- to 13.0-inch d.b.h. range (69 percent).

A total of 147.8 million ft? of growing-stock volume
was in trees >19.0 inches in d.b.h. (24 percent). Cot-
tonwood, pecan, and bur oak accounted for 44 percent
of the volume in this size class.

There were 2,171 million board feet (fom) of tim-
berland sawtimber in central and west Oklahoma.
Three species (cottonwood, post oak, and pecan) made
up 39 percent of sawtimber volume. A large portion of
sawtimber was in trees 219.0 inches in d.b.h. Cotton-

wood, pecan, and bur oak accounted for 47 percent of
the sawtimber volume in this size class.

Gross growth and net growth of growing stock in
central and west Oklahoma for the 10 years preced-
ing this survey was 19.8 and 18.7 million ft?/year, re-
spectively. Only a small proportion of growth was in
softwoods (~5 percent). Most of the growth came from
nongrowth (59 percent), followed by survivor growth,
ongrowth, and ingrowth (24, 20, and 3 percent, respec-
tively). The estimates of mortality and growth on mor-
tality were only a small portion of the growth in this
study (see explanation in the METHODS section).

Gross growth and net growth of sawtimber was 68
and 60 million fbm/year, respectively. Forty-two per-
cent of sawtimber growth came from the nongrowth com-
ponent and 40 percent from the ingrowth component.

Woodland

There were 908,700 acres of woodland in central and
west Oklahoma. Counties that had substantial acre-
age are Seminole, Hughes, Creek, Osage, and Carter.
These five counties made up 43 percent of the wood-
land acreage in this region of Oklahoma.

Only two forest types, eastern redcedar and post
oak—blackjack oak, were represented in the woodland
area because of the predominance of post oak, which
accounted for 55 percent of total tree density. The post
oak—blackjack oak type made up 96 percent of the
woodland area in central and west Oklahoma.

Over one-half of the woodland was in poletimber-size
stands, 531,100 acres. Also, the stocking and basal
area conditions for all live trees were respectable—
only 22,500 acres that were less than 60-percent
stocked and 286,700 acres that had a basal area of
less than 60 ft?/acre. However, growing-stock stock-
ing levels were lower, and subsequent acreage (<60-
percent stocked with growing-stock trees) was much
higher, 513,300 acres (56 percent of woodland area).

There were 513.4 million ft? of live-tree volume on
woodland in central and west Oklahoma, 565.0 ft?/
acre. And 39 percent of the total volume was in cull
trees. Post oak had most of the live-tree volume, 385.8
million ft? (75 percent) and growing-stock volume,
256.5 million ft? (82 percent).

Of the 694 million fbm of sawtimber, 597 million
fbm are in post oak (86 percent). Most of this volume
was in the 11.0- to 17.0-inch d.b.h. range.

Gross growth and net growth of growing-stock trees
were almost identical due to the low mortality esti-
mate, 7.7 and 7.6 million ft°/year, respectively, for the
10 years preceding this survey; 97 percent of this
growth was in hardwoods. Most of the net growth was
from nongrowth and ongrowth trees (74 percent).

Gross growth and net growth of sawtimber were 21.6
and 21.2 million fbm/year, respectively. Most of this
growth was in the hardwood species group (99 percent).


(d.b.h.) was lacking. This lack of data means that
growth in this study was based upon survivor growth,
nongrowth, ingrowth, ongrowth, and an incomplete
mortality estimate (see definitions in appendix A).

Field work began in April 1988 and ended Novem-
ber 1990. A total of 5,115 trees >1.0 inch in d.b.h. were
measured: 2,392 poletimber and sawtimber trees (25.0
inches in d.b.h.) and 1,288 saplings (21.0 but <5.0
inches in d.b.h.) on timberland plots and 909 poletimber
and sawtimber trees and 526 saplings on woodland
plots.

RESULTS AND DISCUSSION

Timberland

There are 1,338,100 acres of timberland in central
and west Oklahoma. Creek and Osage Counties had
the most timberland, 129,600 and 122,100 acres, re-
spectively. Of the 59 counties in central and west Okla-
homa, 43 had timberland acreage in the survey
sample. Exclusion of a county does not mean that a
particular county had no woodland or timberland but
only that the occurrence of such land was so infre-
quent that it was missed by one of the three sample
points in the PSU sample scheme used by the NRCS.

Three forest types, post oak—blackjack oak, oak—
hickory, and sugarberry—American elm-green ash ac-
counted for 74 percent of the timberland area. (See
appendix B for scientific and common names of spe-

cies in study.) Stands having >25 percent of live-tree
stocking in conifers occurred infrequently. Most of
these types of stands were dominated by eastern red
cedar, 60,400 acres. There was a small occurrence of
mixed pine and hardwood in one county where short-
leaf pine stocking was between 25 and 50 percent of
total live-tree stocking, 9,300 acres. The other upland
and other bottomland categories were stands domi-
nated by successional species or species that do not
readily type into the forest types designated by the
Society of American Foresters (SAF). Such species are
boxelder, Osage-orange, Kentucky coffeetree, red mul-
berry, honeylocust, catalpa, winged elm, Siberian elm,
and silver maple.

Most of the timberland stands in central and west
Oklahoma were poletimber size, occupying 539,600
acres (40 percent). Next were sawtimber-size stands
on 424,300 acres, and last were sapling- and seedling-
size stands on 374,100 acres. It seems logical that ei-
ther there has been a fair amount of natural or
anthropogenic disturbance in central and west Okla-
homa forest lands or there has been a substantial
number of land-use conversions. These “hypotheses”
are offered as possible explanations for the relatively
large amount of acreage in sapling- and seedling-size
stands.

Substantial amounts of timberland acreage in cen-
tral and west Oklahoma were adequately stocked.
Only 78,300 acres had less than 60-percent stocking
in live trees. However, 784,000 acres were less than
60-percent stocked with growing-stock trees (59 per-
cent of timberland area).

BLUESTEM HILLS
SOUTHERN HIGH PLAINS
CENTRAL ROLLING RED PLAINS
CENTRAL ROLLING RED PRAIRIES
(2) cross timeers

(7) cranp prairie

SEE] CHEROKEE PRAIRIES

TH, OZNRK HIGHLAND

BOSTON MOUNTAINS

ARKANSAS VALLEY & RIDGES
EES ovacnita mountains

WESTERN COASTAL PLAIN

Figure 2.— Various shadings show the physiographic regions of Oklahoma (U.S. Department of Agriculture, Soil Conservation Service,

1984).


Table C9.—Number of live trees by diameter class and species on timberland, central and west Oklahoma, 1989*
Diameter class (2-inch)

All 1.0- 3.0- 3.0- 7.0- 9.0- 11.0- 13.0-  15.0- 17.0-

Species classes 29 49 69 89 109 12.9 149 16.9 189 219.0

settee ee ec ence cee scent ete eee eee Thousand trees «= ++ === 222+ 20-22 eee eee e eee nent eee eee

Eastern redcedar 33,903 20,791 8,028 2,055 1,639 941 181 166 62 9 31
Shortleaf pine 381 0 0 0 0 0 187 139 35 0 0
Boxelder 4,660 1,282 1,198 622 485 163 372 269 23 i 34
Silver maple 1,940 847 847 157 0 38 0 30 2 0 0
River birch 1,095 mL 0 0 141 244 0 0 0 0 0
Chittamwood, gum bumelia 5,587 1,839 1,899 1,163, 137 240 6B 206 0 34 0
Hickory spp. 41,470 20,180 10,085 5,287 3,925 1,124 BS 44 15 30 13
Pecan 17,052 7,355 3,803 1,732 1,438 485 823 397 45 213 381
Catalpa 641 0 0 365 56 35 136 0 0 48 0
Sugarberry 14,524 5,685 3,028 2,113 1,547 908 366 215 153 207 242
Hackberry 23,013 11,480 6,638 1,440 1,226 TB4 666 296 103 193 239
Eastem redbud 11,688 8525, 3,088 0 15 0 0 0 0 0 0
Flowering dogwood" 1,506 1,506 ° 0 o 9 0 o 0 Q 0
Hawthorn 46 466 0 0 0 r) 0 0 0 0 0
Common persimmon 7,101 4,718 1,468 364 520 t) 20 0 12 0 0
White ash 4,470 3,680 0 “Al 217 92 0 15 0 0 24
Green ash 8,860 3,160 263 1,386 1,492 1,079 633 217 292 17 20
Honeylocust 1,650 406 578 215 251 38 13 0 31 0 17
Kentucky coffeetree 2,507 2,088 0 151 65 44 68 66 0 10 16
Butternut 133 0 0 100 ) 0 0 0 16 0 7
Black walnut 5,992 1,855 849 1,370 637 481 206 20 98 109 167
Osage-orange 9,195 897 3,525 3,672 666 284 65 37 24 4 19
Chinaberry 381 i) 0 169 147 35 30 0 0 0 0
White mulberry 1,123 449 0 660 0 14 0 0 0 0 0
Red mulberry 5,308 3,778 B0 249 am 96 6 93 0 58 8
American sycamore 2,968 596 1,644 141 70 197 105 0 47 n 97
Cottonwood 3,829 0 916 1,012 670 346 m1 61 80 1S 498
Plums and cherries 6,160 5,913 207 40 0 0 0 0 t) 0 0
White oak 371 282 0 0 0 0 0 47 0 0 4l
Southem red oak 761 0 697 0 0 30 0 0 0 0 14
Bur oak 1,663 705 0 181 143 91 33 102 99 39 269
Blackjack oak 151,335 62,964 $0,616 15,374 12,491 6,486 2,400 680 6 161 68
Chinkapin oak 3,397 0 232 1,288 344 794 21 82 us u 110
Pin oak 1,998 1,133 233 243 39 0 39 145 36 38 74
Northem red oak 2,580 1234 0 0 30 176 327 4 185 68 85
Shumard oak 14,642 5,390 5,781 370 703 521 $81 351 200 82 162
Post oak 122,846 $0,507 35,747, (15,072 8,982 5,803 3,215 1319 1,006 $42 652
Black oak 3,124 125 447 1,125 693 281 2B 65 41 87 2
Black locust 1,171 1,160 0 0 0 0 0 rn 0 0 0
Willow 6,703 2,129 2,929 91 633 480 207 83 110 10 30
Winged elm 33,280 19,701 $311 $,342 1,967 608 322 0 0 13 16
American elm 25,937 9,844 6,536 3,774 2272 1,320 396 TM 4s7 252 313
Cedar elm 142 0 0 0 0 142 0 0 0 0 0
Siberian elm 2,913 1,097 799 595 366 0 0 0 47 1 0
Slippery elm 9,387 3,107 3,588 112 781 407 158 18 27 156 31
Others 22,768 14,590 5,441 1691 632 37 28 15 0 0 0

Alll species 622,638 282,174 167,213 71,693 46,371 25,168 12,978 6296 4178 2,655 3,911

‘*Numbers in rows and columns may not sum to totals due to rounding.


APPENDICES


24

Table C16.—Volume of timber by tree grade and species on timberland, cen-
tral and west Oklahoma, 1989*

Tree grade!
Species Alll grades No. 1
seeceeeeee Million board feet
Eastern redoedar $5.7 55.7
Shortleaf pine 22.3 0.0
Boxelder 19.0 0.0
Silver maple 31 0.0
Hickory spp. 34.1 a4
Pecan 267.1 n3
Catalpa 18 0.0
Sugarberry 103.5 10.7
Hackberry 1374 29
Common persimmon 26 15
White ash 5.8 0.0
Green ash 131.2 42
Honeylocust R6 0.0
Kentucky coffeetree 145 0.0
Butternut 5.6 18
Black walnut 793 53
Osage-orange 7.0 21
Red mulberry 69 0.0
‘American sycamore 72.5 0.0
Cottonwood 292.8 97.7
Bur oak 114.7 15.5
Chinkapin oak 46.1 0.0
Pin oak 42.2 0.0
Northem red oak 17 2.0
Shumard oak 125.7 45
Post oak 276.5 22.7 253.8
Black oak 38.2 3.5 34.7
Willow 24.6 42 20.4
Winged elm 148 0.0 14.8
American elm 99.6 14.5 85.0
Slippery elm 379 0.0 379
All species 2,170.9 328.6 1,842.3

*Numbers in rows and columns may not sum to totals due to rounding.
3See appendix A for definition.
4intemnational 1/4-inch Rule.

Table C17.—Components of average annual growth* and average annual mortality* of growing stock on timberland
by species group, central and west Oklahoma, 1989"

Component
Gross, Net _ Survivor Growth
Species group growth' growth) growth Nongrowth Ingrowth Ongrowth on mortality Mortality
vac eeeeeeeenececeeeeeenee “Million cubic feet --=+-+++-2-2-2-2--+eeesenee
Softwood 10 09 0.2 0.7 0.0 0.1 0.0 01
Hardwood 188 17943 103 0s 3.6 0.2 1.0
All species 19.8 1874.4 110 0s 37 02 Ld

*Based on previous 10 years growth.
‘Numbers in rows and columns may not sum to totals due to rounding.

4Gross growth = survivor growth + nongrowth + ingrowth + ongrowth + growth on mortality.

§Net growth ~ survivor growth + nongrowth + ingrowth + ongrowth + growth on mortality - mortality.


@ Pssst honyh The Timberland and Woodland

Agriculture

Foret Service Resources of Central and
Southern Forest West Oklahoma

Experiment Station

James F. Rosson, Jr.

New Orleans,
Louisiana

Resource Bulletin
$0-193
September 1995

6



Salvable dead trees—Standing or downed dead trees
that were formerly growing stock and are considered
merchantable. Trees must be at least 5.0 inches in
d.b.h. to qualify.

Softwoods—Coniferous trees, usually evergreen,
having needles or scalelike leaves.

Volume

Volume of cull—The cubic-foot volume of sound wood
in rough and rotten trees at least 5.0 inches in d.b.h.
from a 1-foot stump to a minimum 4.0-inch top d.o.b.
of the central stem or to the point where the central
stem breaks into limbs.

Volume of growing stock—The cubic-foot volume of
sound wood in growing-stock trees at least 5.0 inches
in d.b.h. from a 1-foot stump to a minimum 4.0-inch
top d.o.b. of the central stem or to the point where the
central stem breaks into limbs.

Volume of live trees—The cubic-foot volume of sound
wood in growing-stock, rough, and rotten trees at least
5.0 inches in d.b.h. from a 1-foot stump to a minimum
4,0-inch top d.o.b. of the central stem or to the point
where the central stem breaks into limbs.

Volume of sawlog portion of sawtimber trees—The
cubic-foot volume of sound wood in the sawlog portion
of sawtimber trees. Volume is the net result after de-
ductions for rot, sweep, and other defects that affect
use for lumber.

Volume of sawtimber—The board-foot volume (In-
ternational 1/4-inch Rule) of sound wood in the sawlog
portion of sawtimber trees. Volume is the net result
after deductions for rot, sweep, and other defects that
affect use for lumber.

Volume of timber—The cubic-foot volume of sound
wood in growing-stock, rough, rotten, and salvable
dead trees at least 5.0 inches in d.b.h. from a 1-foot
stump to a minimum 4.0-inch top d.o.b. of the central
stem or to the point where the central stem breaks
into limbs.

10


Mortality—Number or sound-wood volume of grow-
ing-stock trees or live trees that died from natural
causes during a specified period.

Sampling error—Sampling errors for this study are
based upon the random sampling formula. Only the
subsample of plots (n=387) was used to derive the er-
ror; the error on the area estimate was not considered
in the volume errors.

Sapling-seedling stands—Stands at least 10 percent
stocked with live trees, with more than half of this
stocking in saplings or seedlings.

Sawlog portion—That portion of the bole of a saw-
timber tree between a 1-foot stump and the sawlog top.

Sawlog top—The point on the bole of a sawtimber
tree above which a sawlog cannot be produced. The
minimum sawlog top is 7.0 inches in d.o.b. for soft-
woods and 9.0 inches in d.o.b. for hardwoods.

Site class—A classification of forest land in terms
of potential capacity to grow crops of industrial wood.

Tree grades—A classification of logs based on exter-
nal characteristics as indicators of quality or value.
Log grade 1 trees contain at least one 8-foot log suit-
able for veneer. Log grade 2 trees contain at least one
8-foot log suitable for lumber. Note that this is a de-
parture from normal MIDSO-FIA tree-grading proce-
dures.

Stand Size Classes

Poletimber stands—Stands at least 10 percent
stocked with live trees, with half or more of this stock-
ing in sawtimber or poletimber trees, and with pole-
timber stocking exceeding that of sawtimber stocking.

Sawtimber stands—Stands at least 10 percent
stocked with live trees, with half or more of this stock-
ing in sawtimber or poletimber trees, and with saw-
timber stocking at least equal to poletimber stocking.

Stocking

Stocking is a measure of the extent to which the
growth potential of the site is utilized by trees or pre-
empted by vegetative cover. Stocking is determined
by comparing the stand density in terms of number of
trees or basal area with a specified standard. Therefore,
full stocking is 100 percent of the stocking standard.

Stocking categories are arbitrarily defined as follows:

Optimally stocked—Stands 61 to 100 percent
stocked with growing-stock trees. These stands are
growing toward a fully stocked condition (ideal space
required for each tree increases with age). Optimum
growth and bole form occur in this range.

Overstocked—Stands greater than 100 percent
stocked with growing-stock trees. These stands will
become stagnant with mortality of individuals increas-
ing as stocking increases over 100 percent.

Understocked—Stands 0 to 60 percent stocked with
growing-stock trees. These stands will take a very long
time to reach full stocking. Meanwhile, poor bole form
will result, and much of the productivity will be placed
on heavy limbs instead of on the bole.

The tabulation below shows the density standard
in terms of trees per acre by size class required for
full stocking.

‘Trees per Trees per
D.b.h. acre D.b.h. acre
-- Inches --
Seedlings 600 16 72
2 560 18 60
4 460 20 51
6 340 22 42
8 240 24 36
10 155 26 31
12 115 28 27
14 90 30 24
Tree Classes

Commercial species—Tree species currently or po-
tentially suitable for industrial wood products.

Cull trees—Rough or rotten trees.

Growing-stock trees—Living trees of commercial
species classified as sawtimber, poletimber, saplings,
and seedlings. Trees must contain at least one 8-foot
log in the sawlog portion currently or potentially (if
too small to qualify) to be classed as growing stock.
The log must meet dimension and merchantability
standards to qualify. Trees must also have currently
or potentially one-half of the gross board-foot volume
in sound wood.

Hardwoods—Dicotyledonous trees, usually broad
leaved and deciduous.

Live trees—All living trees. Included are all size
classes, all tree classes, and both commercial and non-
commercial species.

Noncommercial species—Tree species of typically
small size, poor form, or inferior quality that normally
do not develop into trees suitable for industrial wood
products.

Rotten trees—Live trees of commercial species that
are unmerchantable for sawlogs currently or poten-
tially because of rot deduction in the sawlog section.
(See definition of growing-stock trees.)

Rough trees—Live trees of commercial species that
are unmerchantable for sawlogs currently or poten-
tially because of roughness or poor form in the sawlog
section. Also included are all live trees of noncommer-
cial species. (See definition of growing-stock trees.)


Table D10.—-Number of growing-stock trees by diameter class and species on woodland, central and west Oklahoma, 1989*

Diameter class (2-inch)
All 1.0- 3.0- 5.0- 7.06 9.0- 11.0- 13.0- 15.0- 17.0-

Species classes 29 49 69 89 10.9 12.9 149 16.9 18,9 219.0
Eastern redcedar 15,085 9,308 4,642 613 23 131 4 145 0 0 0
Hickory spp. 15,887 10,895 1,051 1,843 1,323 592 0 155 0 0 28
Pecan 34 0 0 0 0 Oo 0 0 34 0 0
Sugarberry 28 197 0 0 31 0 0 0 0 t) 0
Hackberry 4,584 2,819 1,765 ) 1) 0 0 0 0 0 0
Green ash 3,429 0 1,687 622 586 290 196 0 49 0 0
Osage-orange 1,184 1,184 0 0 0 0 oO oO 0 0 0
Bur oak 349 849 0 0 o 0 oO Oo 0 0 0
Swamp chestnut oak 292 0 0 292 0 0 0 0 0 0 0
Chinkapin oak 346 0 0 RT 519 0 0 0 i) 0 0
Norther red oak 172 0 0 0 172 0 0 0 i) 0 0
Shumard oak 1,317 1,054 0 0 241 16 0 0 0 s 0
Post oak 118,430 30,209 28,594 27,514 16,787 6,575 4,241 2,722 969 490 330
Black oak 13,664 6,266 4,414 427 575 1,519 344 84 i) 0 35
Willow 65 0 0 0 0 0 65 0 0 0 0
Winged etm 8,202 5,893 976 844 266 0 222 0 0 0 0
Slippery elm 3,651 2,387 1,051 0 0 0 Oo 0 oO 0 13
Others 3,532 2.878 232 0 256 166 0 0 0 0 0

All species 191,469 74,139 44,413 32,481 20,978 9,289 3,091 3,106 1,071 495 406

*Numbers in rows and columns may not sum to totals due to rounding.


Table D9.—Number of live trees by diameter class and species on woodland, central and west Oklahoma, 1989°
Diameter class (2-inch)

All 1.0- 3.0- 3.0- 7.0- 9.0- 11.0- 13.0-  15.0- 17.0-

Species classes 29 49 69 89 109 129 149 16.9 189 219.0
nS nrrrrSrEreryrSrsrsrererssreryerrsss Thousand trees -~------=-=---s0s-- 7 se eceee nuns eoneneneene

Eestem redcedar 22,590 16,592 4,642 833 23 131 4 145 0 0 0
Chittamwood, gum bumelia 4,592 ) 3,513 489 258 26 96 0 0 0 0
Hickory spp. 21,706 15,220 1,662 2,280 1,620 649 2 155 0 0 28
Pecan 300 0 0 246 0 0 0 0 34 0 0
Sugarberry 5,124 4,298 795 0 31 tC) 0 0 0 0 0
Hackberry 7,621 4,803 2,475 28 0 105 0 0 0 0 0
Eastern redbud 2,933 2,041 392 0 0 0 0 0 0 0 0
Common persimmon 2,102 1,051 1,051 ) 0 r) 0 0 0 0 0
White ash 756 0 0 604 152 8 0 ° 0 8 8
Green ash 4,062 633 1,687 622 586 290 196 0 49 0 0
Black walnut 5 0 o 0 0 ° 0 0 0 0 5
Osage-orange 1,184 1,184 0 0 0 0 0 0 0 0 0
White mulberry 976 916 0 0 0 0 0 0 0 r) 0
Red mulberry 2 0 0 0 0 0 0 0 0 0 2
Black cherry 3,172 3,172 0 0 0 0 0 0 r) 0 0
Bur oak 349 349 0 0 0 0 0 0 0 0 )
Blackjack oak 47,461 16,535 16,726 5,951 5,753 1,726 301 173 12 55 29
Swamp chestnut oak 292 0 0 292 0 0 0 0 0 0 0
Chinkapin oak 846 0 0 327 519 0 0 0 0 0 0
Northern red oak 262 0 0 0 172 0 90 0 0 0 r)
Shumard oak 6,281 4,227 0 0 944 997 0 109 0 5 0
Post oak 225,939 83,994 48372 42,211 24,243 «12,580 6553 4860 1,478 1200-7
Black oak 15,613 6,266 5,182 6 985 1,685 344 216 35 4 120
Live oak 106 0 0 0 0 0 106 0 0 0 0
Willow 139 0 0 0 0 0 139 0 0 0 0
Winged elm 19,078 14,420 2,993 844 556 0 264 0 0 r )
American elm 6,188 5,102 1,051 0 0 0) 0 0 0 0 36
Slippery elm 5,333 4,679 232 0 256 166 0 0 0 r) 0
Others 3318 5,750 1,929 301 0 172 105 61 0 0 0
All species 413,850 191,791 93,202 55,973 36,298 ~——«1&, 738 8,510 S719 _1,627 1016 976

*Numbers in rows and columns may not sum to totals due to rounding.


CONCLUSION

Baseline data describing the forest resources of cen-
tral and west Oklahoma have been presented. The
forest land base for all ownerships exclusive of feder-
ally owned land was 2,246,800 acres. Most of this acre-
age was classed as timberland, 1,338,100 acres (60
percent), with 908,700 acres being classed as wood-
land (40 percent). Only 379,700 acres were in a bot-
tomland forest type. That leaves 1,867,100 acres in
an upland forest type, of which 958,400 acres were
timberland and 908,700 acres were woodland.

Total live-tree volume for central and west Okla-
homa was 1,476.8 million ft?. Sixty-five percent of the
live-tree volume was on timberland. Post oak was the
predominant species, accounting for 20 percent of
live-tree volume on timberland and 75 percent of
live-tree volume on woodland.

Sawtimber volume was 2,865 million fbm for all tim-
berland and woodland. Most of the sawtimber volume
was on timberland (76 percent).

Net growth for growing stock was 18.7 and 7.6 mil-
lion ft3/year for timberland and woodland, respectively.
These growth results translate into a net growth of
14.0 ft?/acre/year for timberland and 8.4 ft?/acre/year
for woodland. Another study has documented the slow
diameter growth rate of post oak in the cross timbers
region at 0.127 inch/year (Rosson 1994).

Estimates of forest area and timber volume for cen-
tral and west Oklahoma have been presented herein.
Future surveys of central and west Oklahoma will
benefit from more careful scrutiny of the forest land

definition for all counties, from obtaining ownership
information, and from improving on the methodology
that delineates more clearly between timberland and
woodland areas. The latter could prove to be especially
difficult because it would require borings from many
sample trees, which would necessitate a large ground-
sampling effort.

LITERATURE CITED

May, Dennis M. 1988. Forest growth of Mississippi’s
north unit—a case study of the southern forest
survey's growth estimation procedures. Resour. Bull.
SO-134. New Orleans, LA: U.S. Department of Ag-
riculture, Forest Service, Southern Forest Experi-
ment Station. 11 p.

Rosson, James F., Jr. 1994. Quercus stellata growth
and stand characteristics in the Quercus stellata—
Quercus marilandica forest type in the cross tim-
bers region of central Oklahoma. In: Fralish, James
S. and Anderson, Roger, eds. Proceedings from the
North American savannas and barrens conference;
1994 October 15; Normal, IL. United States Envi-
ronmental Protection Agency, Chicago, IL: 329-333.

U.S. Department of Agriculture, Soil Conservation
Service. 1984. Oklahoma resources inventory, 1982.
Stillwater, OK: U.S. Department of Agriculture, Soil
Conservation Service. 84 p.

Van Deusen, Paul C.; Dell, Tom R.; Thomas, Charles
E. 1986. Volume growth estimation from permanent
horizontal points. Forest Science. 32(2): 415-422.


Table C12.—Volume of live trees by diameter class and species on timberland, central and west Oklahoma, 1989*

Diameter class (2-inch)

all 5.0- 7.0- 9.0- 11.0- 13.0- 15.0- 17.0-

Species classes 69 89 109 129 149 16.9 189 219.0

wnt nce seen ee an en nnenneennenenecsees “Million cuble feet-~----~---- +--+ 2200-2220 ee eee eee

Eastem redcedar 22.7 33 6.0 39 16 28 16 0.5 12
Shortleaf pine 39 0.0 0.0 0.0 25 21 12 0.0 0.0
Boxelder 149 LI 7 06 39 28 35 04 LL
Silver maple 7 03 09 03 00 0s 06 0.0 0.0
River birch 12 0.0 04 09 0.0 0.0 0.0 0.0 0.0
Chittamwood, gum bumelia 64 24 Ol 08 0.4 2.4 0.0 04 0.0
Hickory spp. 429 12.4 133 59 14 09 16 10 06
Pecan 741 34 6.0 43 10.1 72 108 68 25.4
Catalpa 2.6 02 O1 Ol Ll 0.0 0.0 Mt 0.0
Sugarberry 359 3.1 5A 47 38 43 28 38 82
Hackberry 42.6 28 41 48 65 40 25 68 113
Eastern redbud OL 0.0 Ol 0.0 0.0 0.0 0.0 0.0 0.0
‘Common persimmon 24 07 Ll 0.0 03 0.0 03 0.0 0.0
White ash 32 0.5 13 0.6 0.0 0.2 0.0 0.0 0.7
Green ash 443 23 5.0 73 67 37 $6 33 10.1
Honeylocust 3.0 05 08 0.2 Ol 0.0 0.7 0.0 07
Kentucky coffeetree 37 04 0.2 03 0s 09 0.0 03 10
Butternut 09 Ol 0.0 0.0 00 0.0 02 0.0 07
Black walnut 311 3.6 3.0 3.7 3.1 3.7 2.2 3.5 82
Osage-orange 136 a4 2.0 13 03 02 03 0.1 09
Chinaberry 14 04 os 02 03 0.0 0.0 0.0 0.0
White mulberry 07 07 0.0 Ol 00 0.0 00 0.0 0.0
Red mulberry 34 02 07 06 Ol 06 0.0 09 03
American sycamore 13.2 02 0.4 15 03 0.0 07 18 82
Cottonwood S19 16 40 34 16 Ll 19 19 36.4
Plums and cherries 01 O1 0.0 0.0 0.0 0.0 0.0 0.0 0.0
White oak 19 0.0 0.0 0.0 0.0 06 0.0 0.0 13
Southem red oak 08 0.0 0.0 04 0.0 0.0 0.0 0.0 03
Bur oak 20.7 0.4 03 0.5 0.4 15 19 12 146
Blackjack oak 109.1 22.2 32.0 263 153 65 19 32 17
Chinkapin oak 181 14 18 40 2.0 14 22 03 5.0
Pin oak 10.4 04 0.4 0.0 0s 23 13 14 42
Northem red oak 19.4 0.0 17 1 4.0 13 44 19 5.0
Shumard oak 35.1 17 28 28 53 6.0 38 17 11.0
Post oak 1943 263 312 35.5 277 19.2 170 10.5 26.8
Black oak 13.7 19 2.0 16 21 13 1.0 23 14
Black locust 02 0.0 0.0 0.0 0.0 02 00 0.0 0.0
Willow 13.3 03 26 31 22 14 26 02 09
Winged elm 224 95 37 35 3.0 00 0.0 0.1 06
‘American elm 54.4 16 73 72 31 17 58 49 109
Cedar elm 0.6 0.0 0.0 0.6 0.0 0.0 0.0 0.0 0.0
Siberian elm 24 13 09 0.0 0.0 0.0 Ol OL 0.0
Slippery elm 15.5 24 23 2.5 17 03 05 3.6 22
Others 73 34 18 19 1 O1 0.0 0.0 0.0
All species 963.4 1273 148.7 138.4 78 87.2 79.2 639 2009

*Numbers in rows and columns may not sum to totals due to rounding.

21


United States
Department of Agriculture

Forest Service

Southern Forest
Experiment Station

701 Loyola Ave., Rm.T-10210
New Orleans, LA 70113-1920

OFFICIAL BUSINESS
Penalty for Private Use $300



‘Table D2.—Area of woodland by stand size class and county, central and
west Oklahoma, 1989*

Stand size class
All” Sepling-
County classes seedling Poletimber_Sawtimber
weeeceseeeed Thousand acres --~--------~
Caddo 313 20.9 0.0 10.4
Canadian 72 3.6 0.0 36
Carter 623 10.4 319 0.0
Commanche 13.8 28 83 28
Craig 37 0.0 37 00
Creek 80.3 1L5 68.8 0.0
21 0.0 21 0.0
Garfield 42 42 00 0.0
Grady 1s 75 0.0 0.0
Hughes 33 278 37.0 185
Jefferson 13.0 0.0 87 43
Johnston 26.6 133 133 0.0
Kingfisher 26 00 26 0.0
Lincoln 419 33.5 a4 0.0
Logan 87 0.0 87 0.0
Love 347 0.0 174 114
Major 15.1 108 43 00
Marshall 38 0.0 38 0.0
Noble 24 0.0 24 0.0
Nowata 3.7 0.0 3.7 0.0
Okfuskee 310 00 B3 78
Oklahoma 29.2 97 19.5 0.0
Okmulgee 179 00 179 0.0
Osage n2 178 356 178
pawmee 8 bed 8 bd Table D3.—Area of woodland by stocking class and county, central and west
ayne 215 0.0 21.5 0.0 Ol '1989*
Pontotoc 426 10.6 10.6 213 lahowa,
Potawatomi 207 69 B8 0.0 Stocking class (percent)!
Rogers 34.5 0.0 345 0.0 a7 Te
Seminole 94.2 0.0 314 28 co att we 1 a30
Stephens 453 9.1 212 91 unty_ lasses
‘Tulsa 346 0.0 346 0.0
‘Washington 25 0.0 25 0.0 Caddo .
Woodwerd is 16 00 00 Canadian 72 0.0 72 0.0 0.0
. Carter 623 00 8608 aS 0.0
All counties 9087 2019 =A 175.7 Commanche 138 00 83 33 00
“Numbers in rows and columns may not sum to totals due to rounding. 4B Fr + a 7 ae +7
Dewey 24 0.0 21 00 00
Garfield 42 0.0 00 42 00
ly 13 0.0 0.0 1s 00
Hughes 83.3 0.0 64.8 93 93
Jefferson 13.0 43 43 43 00
Johnston 266 00 = 200 0.0 67
Kingfisher 26 0.0 0.0 26 0.0
Lincoln a9 0.0 00 © 25.1 168
Logan 87 0.0 0.0 37 0.0
Love 347 0.0 87 (26.0 0.0
Major 151 0.0 65 43 43
Marshall 3.8 0.0 38 0.0 0.0
Noble 2.4 0.0 2.4 0.0 0.0
Nowata 37 0.0 0.0 25 12
Okfuskee 31.0 78 (BB 00 00
Oklahoma 29.2 0.0 0.0 19.5 97
Okmulgee 179 0.0 0.0 179 0.0
Osage N12 0.0 44.5 26.7 0.0
Pawnee 138 00 69 69 0.0
Payne 21.5 0.0 00 | oS 0.0
Pontotoc 426 oo 8613213 0.0
Pottawatomie 207 00 = 138 00 69
Rogers 34.5 00 8345 00 00
Seminole 942 00 8732 209 0.0
Stephens 453 0.0 94 362 00
Tulsa 346 00 © 346 0.0 00
Washington 25 0.0 0.0 25 00
Woodward 16 00 0.0 16 00
All counties 9087-225 477.7 i353 SAB

*Numbers in rows and columns may not sum to totals due to rounding.
TA live trees.

27


The Timberland and Woodland Resources
of Central and West Oklahoma, 1989

James F. Rosson, Jr.

INTRODUCTION

The forest survey covering the Midsouth States is
administered by the USDA Forest Service, Southern
Forest Experiment Station, New Orleans, Louisiana.
The Midsouth Forest Inventory and Analysis (MIDSO-
FIA) work unit, located in Starkville, Mississippi, is
responsible for conducting the Midsouth survey. The
following States constitute the Midsouth: Alabama,
Arkansas, Louisiana, Mississippi, Oklahoma, Tennes-
see, and Texas.

The principal findings of the first survey of central
and west Oklahoma, conducted during 1988-90, are
presented in this report. This information can be used
to both quantify and serve as a benchmark that will
provide a preliminary review of the forest resources
in this area of Oklahoma.

The approach to the survey of central and west Okla-
homa was different from routine surveys conducted
by MIDSO-FIA. Because of budgetary constraints, the
survey of central and west Oklahoma involved a large
cooperative effort among MIDSO-FIA, the Oklahoma
Division of Forestry (ODF), and the USDA Natural
Resource and Conservation Service (NRCS). Person-
nel from MIDSO-FIA trained ODF foresters to con-
duct all phases of field work. Using National Resources
Inventory (NRI) plot locations in joint cooperation with
the NRCS saved the expense of purchasing aerial pho-
tography, photointerpretation (dot counts), and the
time and expense of laying out a 3- by 3-mile square
grid of plots.

To date, six other forest surveys have been completed
for the 18 eastern counties. This 18-county area is di-
vided into the Northeast and Southeast forest survey
units (fig. 1). Traditionally, surveys have been conducted
in these counties because forest lands to the west were
considered unproductive in terms of forest products
and because the occurrence of forest land also becomes
less and less frequent westward. The predominant
physiographic area with forest cover in central and
west Oklahoma includes the cross timbers region and
the central rolling red prairies (fig. 2).

The presentation of supplementary information is
offered in the Appendices. Appendix A contains defi-
nitions, Appendix B contains a species list, Appendix
C contains timberland tables C1 through C19, and Ap-
pendix D contains woodland tables D1 through D19.

METHODS

The estimates of forest land area came directly from
the 1982 NRI data provided by the NRCS. Sample se-
lection for the Oklahoma NRI was based upon a strati-
fied sampling system consisting of 8,200 primary
sample units (PSU’s) and PSU points (up to 3) within
each PSU for data collection. In the 44 central and
west Oklahoma counties, 1,334 PSU points were
classed as forest land by the NRCS. (Forest land, as
defined by the NRCS in the NRI, is land at least 10-
percent stocked by forest trees of any size, or formerly
having had such tree cover, and not currently devel-
oped for nonforest use.) The minimum area for classi-
fication of forest land was 1 acre, which had to be at
least 100 ft wide.

Sample plots for this study were randomly selected
from the 1,334 PSU points distributed throughout the
44 counties in central and west Oklahoma. Based upon
MIDSO-FIA data in the West Gulf region, approxi-
mately 200 to 400 sample plots would have to be mea-
sured to bring volume sampling errors to an acceptable
level (<10 percent). These sample plots were selected
by a stratified method among the 44 counties so that
all counties would be represented, and counties with
large acreage in forest land carried respective weight-
ing. Additional stratification was done by physi-
ographic class to ensure that the forest acreage of
uplands and bottomlands would agree with the NRCS
estimates. This process resulted in some counties hav-
ing less than five sample plots per strata because these
were the only forested plots in the county identified
by the NRCS. Also, some selected plots were no longer
classified as forest land at the time of the ODF field
visit, so some randomly selected plots had to be excluded.
This exclusion left 387 forest plots for this study.

James F. Rosson, Jr., is a research forester, U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station, Forest

Inventory and Analysis, Starkville, MS 39759.


Table C2.—Area of timberland by stand size class and county, central
and west Oklahoma, 1989*

Stand size class (all live trees)
All Sapling-
County classes seedling Poletimber _ Sawtimber
wececneeeee Thousand acres --~
Beckham 48 00 24
Blaine 159 64 95
Caddo 179 104 0.0
Canadian 145 83 24
Carter 311 208 0.0
Cleveland 748 218 33.8
Commanche 34 83 41
Cotton 24 24 0.0
Craig 249 37 52
Creek 129.6 344 86.7
Dewey 186 62 12.4
Garfield 67 42 0.0
Garvin 121 0.0 42
Grady 126 7s 0.0
Hughes 687 136 185
Jefferson 128 0.0 43
Johnston 29.2 0.0 20.0 Table C3.—Area of timberland by stocking class and county, central and west
Ry be 33 3° 3 Oklahoma, 1989*
nok 547 137 25.1 Stocking cass (percent)
Logan 31.6 174 a7 All 167-—-60-—«:100=
Love 23.2 00 145 County classes 59 % 1292130
McClain 172 00 2300 M9 Thousand tren cl-<<2csseazece
Maier Br &6 108 Beckham 48 00 24 24 0.0
Marsh ag ao oe Blaine 15900 32 64 64
Noble Br a me Caddo 17938 38 00 = 104
ta 43 ie $2 Canadian 4536 60 24 24
ok a3 red Re Carter 311 oe 208 10.4 00
Gxishome 353 ee sre Cleveland 48 00 338 291 120
8 : : ; Commanche 34 110 69 33 0.0
Osage ml O83 367 Cotton 24 00 24 00 0.0
Pawnee 32 38 ne Craig 249 00 880 52
Perintoc 22 106 106 Creek 12996 1S 43.0 63.8 115
Pontotoe ie 722 es as Dewey 186 021 62 33 21
° . ; ; Garfield 67 00 42 0.0 2s
Roger Mills 14 ts 30 Garvin 21 00 79 42 0.0
Rees 356 nr 23 126 0.0 00 3.1 73
Stenhens PH no 3 Hughes 67 00278 36.5 44
Steph 1s 20 oO Jefferson 128 00 85 43 0.0
‘ ° Johnston 29.2 0.0 15.9 13.3 0.0
Wagoner 375 147 135 Kay 23 0.0 23 0.0 00
Washington wr za 108 164 Kingfisher 103 0.0 31 $2 0.0
: i A Lincoln 547 $3304 137 $3
Allcounties 11,3381 374193964243 Logan 316 00 00 «489 27
Numbers in rows and columns may not sum to totals due to rounding. Mca rs ane 3 8S
Major BI 43 65 86 43
M 3800 0.0 38 0.0
Noble B2 16 106 1 33
Nowata 47 12 178 127 39
545. 80233 233 0.0
Oklahoma 3429.7 31 333 61
Okamulgee 2 00 408 2335 29
221 89 = 510356 26.7
Pawnee 332000207 125 0.0
Payne 327 0016.1 34 72
Pontotoc 22 © 00 09 106 © 106
Pottawatomie 16749 49 69 0.0
Roger Mills 1400 14 0.0 00
Rogers 2s 00 4s 45138
Seminole 250 «0028.0 0.0 0.0
Stephens 3710 2S LS ns uns
Tulsa 3900 0.0 20 20
Wagoner 37500 00 ©2403 5
Washington 29 00 = 162 1d 23
Washita 48 00 24 24 0.0
All counties 13381 783 S274. —«S24a 22079
*Numbers in rows and columns may not sum to totals due to rounding,

TAI live trees,

14


16

Table C5.—Area of timberland by stand size class and forest type, central and west Oklaho-

ma, 1989*
Stand size class (all live trees)
Alt Sapling-

Forest type classes _Nonstocked seedling _Poletimber__Sawtimber
Eastern redcedar 60.4 0.0 343 13.7 123
Shortleaf pine-oak 93 0.0 0.0 0.0 93
Post oak-blackjack oak 375.4 0.0 160.7 195.9 18.7
Oak-hickory 348.4 0.0 107.4 172.1 68.9
Other upland! 164.9 0.0 35.0 54.5, 75.4
Sugarberry-American

‘elm-green ash 267.4 0.0 25.6 63.6 1783
Sycamore-pecan-

‘American elm 78.0 0.0 Md 25.4 415
Other bottomland! 343 0.0 0.0 143 199

All types 1,338.1 0.0 374.1 539.6 424.3

*Numbers in rows and columns may not sum to totals due to rounding.

TStands dominated by successional species that do not readily type into SAF forest types.
Examples are: Osage-orange, boxelder, Kentucky coffeetree, red mulberry, honeylocust,
catalpa, winged elm, Siberian elm, silver maple.

Table C6.—Area of timberland by basal area class and forest type, central and west Okla-

homa, 1989*
Basal area class (/’/acre)!
all 30- 60~ 90~
Forest type classes <30 39 89 192120
= Thousand acres--------=---------~

Eastern redcedar 60.4 0.0 123 33.0 15.1 0.0
Shortleaf pine-oak 93 0.0 0.0 0.0 93 0.0
Post oak-blackjack oak 375.4 423 165 165.8 46.6 42
Oak hickory 348.4 032.4 7B. 187.7 612 19.0
‘Other upland? 1649 18.4 15.7 62.2 478 15.9
Sugarberry-American

elm-green ash 2674 83 403 69.1 100.5 49.2
Sycamore-pecan-

‘American elm 0 2.5 21.0 25.9 19 10.6
Other bottomiand? 3430.0 16 12.7 6.2 18

All types 1,338.1 103.9 297.5 531.4 298.6 106.7

*Numbers in rows and columns may not sum to totals due to rounding.

All live trees.

+Stands dominated by successional species that do not readily type into SAF forest types.
Examples are: Osage-orange, boxelder, Kentucky coffeetree, red mulberry, honeylocust,
catalpa, winged elm, Siberian elm, silver maple.


INTRODUCTION ............ 0002.0 e cece cence eee eee 1
METHODS.............. 2.00 c eee cece eee eee es 1
RESULTS AND DISCUSSION 3

Timberland 3

Woodland 4
CONCLUSION ....... 00... o ccc cece cence nee 5
LITERATURE CITED ............60. 0000 c cece eee eee es 5

APPENDICES. .
Appendix A—Definition of Terms .
Appendix B—Species List ......
Appendix C—Timberland Tables
Appendix D—Woodland Tables ...........



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its programs on the basis of race, color, national origin, sex, religion, age, disability,
political beliefs and marital or familial status. (Not all prohibited bases apply to all
programs.) Persons with disabilities who require alternative means for communica-
tion of program information (braille, large print, audiotape, etc.) should contact the
USDA Office of Communications at (202) 720-2791.

To file a complaint, write the Secretary of Agriculture, U.S. Department of Agricul-
ture, Washington, DC 20250, or call (202) 720-7327 (voice) or (202) 720-1127 (TDD).
USDA is an equal employment opportunity employer.


Table C18.—Components of average annual growth* and average anmual mortality* of sawtimber on timberland
by species group, central and west Oklahoma, 19891

Component
Gross Net | Survivor Growth
Species group growth growth growth Nongrowth Ingrowth Ongrowth on mortality Mortality
we eee nee eee eee ee eee eee “Million board feet" -----------------+-------+
Softwood 41 40 0.7 19 13 Ol 0.1 0.1
Hardwood 64.1 $6.0 125 23.2 228 47 09 Eat
All species 68.1 59.9 13.2 25.2 24.1 47 09 8.2

*Based on previous 10 years growth.
‘Numbers in rows and columns may not sum to totals due to rounding.

+Gross growth = survivor growth + nongrowth + ingrowth + ongrowth + growth on mortality.

5Net growth = survivor growth + nongrowth + ingrowth + ongrowth + growth on mortality - mortality.
‘international 1/4-inch Rule,

Table C19.—Sampling errors for growing-stock volume, grow-
ing-stock growth, and sawtimber volume by county
for timberland, central and west Oklahoma, 1989*

Growing-stock  Growing-stock  Sawtimber

County volume growth volume
ers Percent --------------

Beckham t 47.0 t
Blaine 29.9 346 t
Caddo J '
Canadian 43.9 423 t
Carter t t 1
Cleveland 33.8 373 442
Comanche 48.4 t
Cotton 0.0 0.0 0.0
Craig 34.9 45.3 421
Creek 19.4 264 17.7
Dewey 34.7 36.6
Garfield ' 29.8 1
Garvin t 429 1
Grady t t t
Hughes 278 347 30.5
Jefferson 15.4 t 348
Johnston 29.7 381
Kay 0.0 0.9 0.9
Kingfisher t t
Lincoln 21.8 34.5 45.4
Logan 412 t 415
Love 35.5 t '
McClain 222 288 17.4
Major 38.7 46.0 428
Marshall 0.0 0.0 0.0
Noble 33.8 43.2 389
Nowata 18.6 18.2 249
Okfiuskee 23.2 42.2 168
‘Oklahoma 34.1 40.3 343
Okmulgee 27.4 322 30.8
Osage t
Pawnee 28.1 40.7 40.7
Payne 24.6 50.0 35.9
Pontotoc ' 49.8 t
Pottawatomie t 1
Roger Mills 0.0 0.0 0.0
Rogers 18.8 324 30.5
Seminole 42.4 t 323
Stephens 1 t 1
Tulsa t t t
Wagoner 29.5 42.0 29.4
Washington 19.4 19.8 28.0
Washita 35.3 ' '

All counties 76 a9 99

See definition of sampling error in appendix A.
‘Sampling error greater than $0 percent.


SUMMARY

The first forest survey of 44 central and west Oklahoma coun-
ties shows 1,338,100 acres of timberland and 908,700 acres of
woodland. Total live-tree volume was 1,476.8 million cubic feet
(ft®), 65 percent of which was in timberland. Post oak is the pre-
dominant species, making up 20 percent of live-tree volume on
timberland and 75 percent of live-tree volume on woodland. There
were 2,865 million board feet (fbm) of sawtimber, 76 percent of
which was in timberland. Net growth for growing stock was 18.7
and 7.6 million ft?/year for timberland and woodland, respectively.

FOREWORD

The USDA Forest Service, Southern Forest Experiment Sta-
tion, Midsouth Forest Inventory and Analysis (MIDSO-FIA) unit
headquartered at Starkville, Mississippi, conducts forest inven-
tories covering the States of Alabama, Arkansas, Louisiana, Mis-
sissippi, Oklahoma, Tennessee, and Texas and the Commonwealth
of Puerto Rico. The MIDSO-FIA mission is to develop, analyze,
and maintain forest resource information essential for the formu-
lation of forest policies and programs.

The MIDSO-FIA inventories of these States are part of a na-
tionwide effort originally authorized by the McSweeney-McNary
Act of 1928. More recent legislation pertinent to the MIDSO-FIA
mission includes the Forest and Rangeland Renewable Resources
Planning Act of 1974, the National Forest Management Act of
1976, and the Forest and Rangeland Renewable Resource Research
Act of 1978.

ACKNOWLEDGMENTS

The MIDSO-FIA unit gratefully acknowledges the cooperation
of landowners for providing access to measurement plots. Also,
the cooperation of the Oklahoma Division of Forestry (ODF) and
the USDA Natural Resource and Conservation Service (NRCS) is
greatly acknowledged.

The ODF completed all sample plot measurements; the NRCS
cooperated in the verification of sample plot information in this
joint effort and assisted in the interpretation of National Resources
Inventory (NRI) data.


Table D13.—Volume of growing stock by diameter class and species on woodland, central and west Oklahoma, 1989*

Diameter class (2-inch)

All 3.0- 7.0- 9.0- 11.0- 13.0- 15.0- 17.0-
Species classes 69 89 10.9 129 49 16.9 189 219.0
~~ Million cubic feet--

Eastem redcedar 37 10 0.5 03 03
Hickory spp. 13.9 31 48 39 0.0
Pecan 2.0 0.0 0.0 0.0 0.0
Sugarberry 0.0 0.0 0.0 0.0 0.0
Green ash 84 16 Ls 23 23
‘Swamp chestnut oak 08 08 0.0 0.0 0.0
Chinkapin oak 19 0s 14 0.0 0.0
Norther red oak 0.7 0.0 07 0.0 0.0
Shumard oak Ls 0.0 12 Ol 0.0
Post oak 256.5 40.0 612 370 40.4
Black oak 15.5 02 22 13 35
Willow 09 0.0 0.0 0.0 09
Winged elm 49 19 1.0 0.0 20
American elm ol 0.0 0.0 0.0 0.0
Slippery elm 1.6 0.0 08 08 0.0
All species 313.5 48.9 75.5 52.0 49.4

‘*Numbers in rows and columns may not sum to totals due to rounding.

Table D14.—Volume of sawtimber by diameter class and species on woodland, central and west Oklahoma, 1989*

Diameter class (2-inch)

all 9.0- 11.0- 13.0- 15.0- 17.0-
Species classes 109 12.9 149 169 18.9 219.0
+ Million board feet"

Eastern redcedar 11.0 1.6 13 8.1
Hickory spp. 179 0.0 0.0 113
Pecan 97 0.0 0.0 0.0
Green ash 128 0.0 91 0.0
Shumard oak 09 0.0 0.0 0.0
Post oak 596.5 0.0 172.0 178.4
Black oak 27.4 0.0 15.3 6.4
Willow 3.7 0.0 3.7 0.0
Winged elm 69 0.0 69 0.0
American elm 78 0.0 0.0 0.0
All species 694.4 16 208.3 204.3

*Numbers in rows and columns may not sum to totals due to rounding.
"international 1/4-inch Rule,

Table D15.—Volume of timber by class of timber and forest type on woodland, central and west Oklahoma, 1989*

Class of timber
Rough Rotten
All Growing-stock Growing-stock _poletimber and __poletimber and
Forest type classes _poletimber _sawtimber sawtimber sawtimber
Eastern redeedar 41 12 03 25 0.0
Post oak-blackjack oak 5093 1748 137.2 184.3 13.0
All types 513.4 176.0 137.5 186.9 13.0

*Numbers in rows and columns may not sum to totals due to rounding.

33


Table D4.—Area of woodland by basal area class and county, central and west Oklahoma, 1989*

Basal area class (/?'/acre)!
All 30- 60- 90-
County classes <30 59 89 119 2120
see eeee eee ence cece ee Thousand acres----------------------
Caddo 313 0.0 0.0 0.0 0.0
Canadian 72 36 36 0.0 0.0
Carter 623 0.0 10.4 208 10.4
Commanche 13.8 00 83 28 0.0
Craig 3.7 0.0 0.0 3.7 0.0
Creek 803 0.0 45.9 0.0 0.0
Dewey 21 0.0 21 0.0 0.0
Garfield 42 00 0.0 0.0 0.0
1S 0.0 0.0 0.0 0.0
Hughes 333 18.5 463 93 0.0
Jefferson 13.0 0.0 0.0 87 0.0
Johnston 266 133 67 0.0 0.0
Kingfisher 2.6 0.0 0.0 26 0.0
Lincoln 41g 0.0 16.8 0.0 0.0
Logan a7 0.0 0.0 87 0.0
Love 347 0.0 26.0 87 0.0
Major 15.1 43 65 22 0.0
Marshall 38 0.0 0.0 38 0.0
Noble 24 0.0 0.0 0.0 12
Nowata 37 0.0 0.0 25 12
Okfuskee 31.0 00 15.5 0.0 0.0
Oklahoma 29.2 0.0 0.0 97 97
Okmulgee 179 0.0 179 0.0 00
Osage n2 89 26.7 89 0.0
Pawnee 13.8 00 69 69 00
Payne 215 0.0 144 12 0.0
Pontotoc 42.6 0.0 23 10.6 0.0
Pottawatomie 20.7 00 13.8 0.0 0.0
Rogers 34.5 0.0 115 23.0 0.0
Seminole 94.2 0.0 94.2 0.0 0.0
Stephens 453 0.0 272 91 9.1
Tulsa 34.6 0.0 173 0.0 00
Washington 25 0.0 0.0 25 0.0
Woodward 16 1.6 00 0.0 0.0 0.0
All counties 908.7 50.2 236.5 439.0 151.4 31.6

*Numbers in rows and columns may not sum to totals due to rounding.
TAll live trees.

Table DS.—Area of woodland by stand size class and forest type, central and west Oklahoma,
1989*

Stand size class (all live trees)
All Sapling-
Forest type classes _Nonstocked seedling _Poletimber _Sawtimber
~ -Thousand acres - -
Eastern redcedar 33.9 0.0 216 64 0.0
Post oak-blackjack oak 874.8 0.0 174.3 524.8 175.7
All types 908.7 0.0 201.9 $31.1 178.7

*Numbers in rows and columns may not sum to totals due to rounding.


Species List

Appendix B—Species List

Scientific* and common names of tree species >1.0
inch in d.b.h. occurring in the MIDSO-FIA sample,
central and west Oklahoma, 1989:

Scientific name

Common name

Commercial Species

Softwoods

Juniperus virginiana L.
Pinus echinata Mill.

Hardwoods

Acer negundo L.

A. saccharinum L.

Betula nigra

Carya spp.

C. illinoensis (Wangenh.)
K. Koch

Catalpa spp.

Celtis laevigata Willd.

C. occidentalis L.

Cornus florida L.

Diospyros virginiana L.

Fraxinus americana L.

F. pennsylvanica Marsh.

Gleditsia triacanthos L.

Gymnocladus dioicus (L.)
K. Koch

Juglans cinerea L.

J. nigra L.

Maclura pomifera (Raf.)
Scheid.

Morus rubra L.

Platanus occidentalis L.

Eastern redcedar
Shortleaf pine

Boxelder
Silver maple
River birch
Hickories

Pecan

Catalpa

Sugarberry
Hackberry
Flowering dogwood
Common persimmon
White ash

Green ash
Honeylocust

Kentucky coffeetree
Butternut
Black walnut

Osage-orange
Red mulberry
American sycamore

Populus deltoides Bartr.
ex Marsh.

Prunus serotina Ehrh.

Quercus alba L.

Q. falcata Michx.

Q. macrocarpa Michx.

Q. michauxii Nutt.

Q. muehlenbergii Engelm.

Q. palustris Muenchh.
Q. rubra L.

Q. shumardii Buckl.
Q. stellata Wangenh.
Q. velutina Lam.
Robinia pseudoacacia L.
Salix nigra’ Marsh.
Ulmus alata Michx.
U. americana L.

U. crassifolia Nutt.

U. pumila L.

U. rubra Muhl.

Cottonwood
Black cherry
White oak
Southern red oak
Bur oak

Swamp chestnut oak
Chinkapin oak
Pin oak
Northern red oak
Shumard oak
Post oak

Black oak

Black locust
Black willow
Winged elm
American elm.
Cedar elm
Siberian elm
Slippery elm

Noncommercial Species

Bumelia spp.

Cercis canadensis L.

Crataegus spp.

Melia azedarach L.

Morus alba L.

Prunus spp.*

Quercus marilandica
Muenchh.

Q. virginiana Mill.

Chittamwood
Eastern redbud
Hawthorn
Chinaberry
White mulberry
Plums, cherries

Blackjack oak
Live oak

*Nomenclature from: Little, E.L., Jr. 1979. Check-
list of United States trees (native and naturalized).
Agric. Handb. 541. Washington, DC: U.S. Department

of Agriculture. 375 p.

?May include some noncommercial willows.

+Other than black cherry.

11


Table C4.—Area of timberland by basal area class and county, central and west Oklahoma,

[939%
Basal area class (/P/acre)!

all 30- 60- 90-

County classes <30 59 89 119 2120
cece neon ereneecerced Thousand acres ---------+----------~

Beckham 48 0.0 0.0 24 24 0.0
Blaine 18.9 0.0 0.0 64 95 0.0
Caddo 179 0.0 179 0.0 0.0 0.0
Canadian 145 24 12.1 0.0 0.0 0.0
Carter 311 0.0 10.4 20.8 0.0 0.0
Cleveland 748 0.0 13 33.8 218 120
Commanche 23.4 28 165 41 0.0 0.0
Cotton 24 0.0 24 0.0 0.0 0.0
Craig 249 0.0 73 88 37 52
Creek 129.6 1s 48.0 63.8 64 0.0
18.6 41 21 103 0.0 21
Garfield 67 0.0 42 0.0 0.0 25
Garvin 121 0.0 0.0 0.0 121 0.0
126 0.0 15 0.0 0.0 S.A
Hughes 68.7 93 0.0 40.9 18.5 0.0
Jefferson 128 0.0 0.0 BS 43 0.0
Johnston 29.2 0.0 26 13.3 133 0.0
Kay 23 0.0 0.0 23 0.0 0.0
Kingfisher 103 0.0 3.1 0.0 $2 0.0
Lincoln $47 84 19.0 84 33 13.7
Logan 51.6 0.0 17.4 8.7 114 14.1
Love 23.2 0.0 0.0 10.6 12.5 0.0
McClain 172 0.0 19 23 47 23
M 23.7 43 43 65 43 43
Marshall 38 0.0 0.0 0.0 38 0.0
Noble 23.2 0.0 1 57 49 49
Nowata 40.7 0.0 63 12.7 16.6 at
545 0.0 13.1 33.7 78 0.0
Oklahoma 342 97 97 12.8 128 92
Okmulgee 99.2 14.0 14.0 29.3 26.8 1
Osage 122.1 26.7 178 35.6 42.1 0.0
Pawnee 33.2 0.0 69 16.6 97 0.0
Payne 32.7 0.0 12 17 67 72
Pontotoc 22.2 0.0 0.0 115 10.6 0.0
Pottawatomie 16.7 0.0 118 49 0.0 0.0
Roger Mills 14 14 0.0 0.0 0.0 0.0
Rogers 228 0.0 23 13.8 45 23
Seminole 25.0 0.0 14 23.7 0.0 0.0
Stephens 37.1 0.0 49 29.6 25 0.0
Tulsa 39 2.0 0.0 2.0 0.0 0.0
Wagoner 375 14 0.0 178 62 62
Washington 29.9 0.0 0.0 159 83 $7
Washita 48 0.0 24 2.4 0.0 0.0
All counties 1,338.1 103.9 297.5 531.4 298.6 106.7

‘Numbers in rows and columns may not sum to totals due to rounding.
TAL live trees,

15