f
forest invent egro region, F’uerto Rico, was ~onduc

ght different forest classes were sampled: active coffee shade, abane shade, se~o~da~ forest, eucal~t~s plantation, other timberland,

r moun~in forest, palm forest, and dwarf forest. The study found the

region is 61 percent for~s~d with 20,100 hec es of timberland and 2,300

hectares of other forest land. eucalypti robusta accounts for 19,000 cubic

meters or 37 percent of the growing-stock volume in the public forest. Seven

valuable bardw~ species add 16,000 cubic meters to the growing stock on

public timberland. Private tim~rland also includes valuable timber, but the

es are more scattered and the average volume only one-third of that

ic forests. Most eucalyptus plantations are ready for harvest and regenther public timberIand contains good sapling and poletimber stocking and would be from release cutting. Private timberland has adequate

sapling stocking ch could be released in many cases by removal of rough

and rotten overs
Page

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

. . . . ..*...... 2

‘OFORESTS’:::::::::::::: . . . . . . . . . . . . . 3

sification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

rea ..-.................................... 3

Species Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

. . . . . . . . . . . . . . . . . . . . . . . . . . . 5

O~~~~~UNITIES . . . . . . . . . . . . . . . . . . 6

TED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . jl . . . . . . . . . . . 8

1tyoftheData . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Definitions........................................ 9

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

. . . . . . . . . . . . . . . . . . . . . . . . . . 13

s . . . . . . . . . . . . . . . . . . . . . . . . 13

Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
i

1

0 10 2 0 30 4 0 km

75 meters a 75 - I55 meters 150 - 300 meters

300 - 600 meters 600 meters and up

ice, and location of study area.

in
Need for an eval

evident after a P

types.

forests. current

Rico 1979). Elevation rang

the town of Villalba to 1338

the highest point on the is1

ex series 0

Station

ice--ca

tarkville

co, Puert
and irrigation is

reservoirs. Both

ater ~~~se~vatio~.

e accessible parts of the

ed or pastured at that

tree shade was comareas in the higher elevaature timber and

regularly, and the bet-

~~alyp~us robusta (eucawere coner under local

cephalus chinensis

) were initiated

Caribbean Nathe U.S. Forest

appearance. The

ypes and plantatrons,

ely undisturbed high

elevation forests, es El Guineo division.

e dwarf and palm

nuco types which are

adsworth 1964).

The data on forest acreage, timber volume, and species composition were 0 d by a sampling method

involving both a land classification on aerial

photo~aphs and on-the-ground measurements. A dot

count method was used to obtain an initial estimate of

area by land cover class. This estimate was adjusted

on the basis of a ground check of actual land cover at

selected on U.S. Geological Survey to s and transferred to

aphs. The center of each forest locaed on the ground by running a computed azimuth and distance from a selected starting

point. Each plot at a sample location was marked so

that future surveys can reestablish the plot and estimate growth, mortality, removals, and changes in

land use.

The field survey was designed with several levels of

detail. The region bounded by the 2 USGS quadranled to provide some data about private

forest lands. Fiel sample locations were selected at

ns of the same grid of lines used in the

ample locations measured in 1980 were

not remeasured in 1983. Grid spacing was 3 kilometers and each sam le location represented about 900

hectares.

The sample was ~ntensi~ed in t e public forests to

etail to formulate broad manageto characterize the major forest

lect enough sample trees to estimate

timber volume with a ndard error of approximately

10 percent. The min m ~~rnber of plot locations

reviewing statistics from

sured in 1980. Actual samion and for public and priused in the

lower elevation.

etailed measure-
uineo division
public timberland is located within the

et forest life zone (table 8). The more

s development of commercial timber

, this life zone is characterized by the

lm forest classes, with pockets of upper

rest developing on protected ridges and

. The palm type is the only noncommerfound in the subtropical wet forest life

of the private timberland extends

one, the subtropical moist forest, in

lowest and driest portions of the region (table 9).

ondary forests are most common and account for

ercent of the private timberland.

human disturbance for the past 35 years, and

ly much longer (table 10). In contrast, more

las was still in coffee shade, pasture, or early

ion brush in 1950. These past uses can still be

e Doiia Juana division contains some small, relaeies ositio~

tion in each forest class is

land use practices, and by

s which are quite variable in the Toro

Eucalyptus plantations have the least

with Eucalyptus robusta accountf the total basal area and dominatr size class (table 11). The next most

icropholis chrysophylloides (caimif the basal area but is

letimber class. A few speerstory: Eugenia jumbos

) has edible fruits but little timber value;

ortor~~ensis (helecho gigante espinosa) is

tree fern of the area; and ‘l’abebuia hetle blanco) and Alchornea latifolia (achimost common timber species.

JX timberland has a much more complex

ch reflects the various cover types

ompose this class (table 12). Prestoea

ma de sierra) and Cecropia peltata

ost common species. The

are the same as plantation

of Casearia arborea (rabo

raton). Some of the more common species

high quality cabinet timber.

dominate the overstory (table 13). Prestoea an

cropholis together account for 43 percent of the

area. Tree ferns and Matayba dominge

lora) are also common in the understory.

The palm forest is one of the few vegetation associations in Puerto co dominated by a single s

Prestoea accounts for 60 percent of the basal a

73 percent of the trees in the poletimber class (table

14). These percentages are remarkably similar to

rted for palm forest in the Luquillo

wn et. al. 1933). Other abundant

e tree fern are those fomd through

Toro Negro uplands.

The dwarf forest includes species found in other

classes, but of much smaller size and with different

rates of occurrence. The composition is also qu

ferent from the dwarf forest in the Luquillo

tains. hree tree fern species (Cyathea orbo

aquilina, and Nephelea portoricensis) together account for 34 percent of the basal area (table 15).

Prestoea is again common, along with two species less

common in other classes, Clusia grisebachiana and

Calycogonium squamulosum . Occasional sawtimbersize trees appear in protected pockets.

Private timberland species composition is most similar to that found elsewhere on the island, except for

abundance ofPrestoea (table 16. Birdsey and

of seemmon

sapling is Corsfea arabica (coffee), with many i~divid~-

als persisting for years

ment, and others establis

ary forests. Despite the

it is never found on acti

ing in plantations while

other ~~derst~~y species

forest.

and rotten trees (table 22). This wood is often uneconomical to recover. Poletimber trees on other public

timberland contain a particularly high percentage of

sound cull volume.

Yet another factor that must be considered is accessibility. Site characteristics indicate a range of slope

classes from 20 to 90 percent, and a range of hauling

istances from 0 to 800 meters for timberland. Many

tracts would require access roads, special logging

equipment for steep slopes, and great care to avoid

site degradation.

In sum, the most immediate utilization problem for

public timberland is to find a suitable market for the

mature Eucalyptus. Harvesting the large stems

would primarily be limited by equipment availability

and access. Much of the sawtimber of other species is

scattered. Extensive harvesting on private timberland should be deferred until promising young stands

mature. In all cases, timber harvesting should be done

within the context of a management plan which ensures a future timber stand and preserves the many

valuable non-timber attributes of the Toro Negro

forest.

AMAZEMENT OPPORTUNITIES

Forest inventory data can provide guidelines for

developing a timber management strategy for Toro

Negro timberlands. These broad guidelines should

not be directly applied to a particular stand of timber

without a detailed stand examination to determine if

the actual composition is similar to this characterization of the whole forest.

The first step to develop a timber management plan

is to tally the number of trees by size class, and attach

a use code to the more common species. Then the numling and poletimber trees can be compared to

a standard to decide if there is sufficient stocking of

irable species to establish a manageable timber

cl. In the absence of stocking guides developed

through experimentation, a local “rule-of-thumb” can

be used. For Puerto Rico, a minimum stocking per

hectare of 100 poletimber trees or 250 saplings of desirable species can be considered adequate for a manand (Wadsworth and Birdsey 1982).

gro plantations are dominated by mature

which is ready for harvest. The timber

could be replaced by artificial or natural regeneration. Currently, poletimber stocking of high quality

sawtimber species averages 72 trees per hectare,

chiefly Micropholis and Guarea (table 23). Utility species provide an additional 110 poletimber trees per

hectare. Total utilizable sapling stocking averages

about 190 trees per hectare. Saplings and poletimber

er clearly exceed minimum stocking, however,

harvesting large eucalyptus logs would probably

cause excessive damage to resi

after-harvest stocking close

Considering the actual u n

stand to stand, each case woul

separately. Most likely a mixture o

ural regeneration would be pr

Additional consideration must b

logical characteristics of th

Eucalyptus and Microphol

rates? There may also be

desirable competitors sue

mon understory species such as the tree ferns could

left since many do not affect timber volume

significantly, and may have other i

the forest ecosystem.

Other public timberland lacks the do

single, harvestable species, making selective harvests

of a few valuable stems much more likely. This

be coupled with timber stand improve

ments that would favor the currently adequate stocking of desirable immature trees of Guarea, lnga fagifolia, Micropholis, and Tabebuia (table 24).

quality growing stock averages 249 saplings an

poletimber trees per hectare, with utility timber species adding another 225 saplings and 116 poletimber

trees. Common desirable species comprise 20 percent

of all saplings and 48 percent of all poletimber. any

of the less desirable species are small understory trees

and would not compete with the desirable timber species. Conversion of other public timberland to plantation species would probably not be warranted due to

the adequacy of current stocking.

Private timberland has adequate sapling stocking

but lacks a good poletimber component (table 25). An

additional problem concerns the high proportion of

rough and rotten poletimber and sawti

(table 26). Poor tree quality renders many of the sawtimber trees undesirable for harvest, and cull poletimber cannot be considered part of the manageable

stand. These trees must be deadened along with undesirable saplings to release the good saplings and establish a timber stand.

Although there is more uncertainty

on saplings for a future stand, many private stands

include sufficient stocking to warrant close inspection. Guarea is particularly common an

tured as the principal species in many private forests.

Timber management in the Toro Negro region will

always be subject to the constraints of management

for other forest resources. The value of forest cover for

watershed protection increases each year as island

population grows. Every forest disturbance will affect

the water supply, and so every management activity

must be evaluated carefully. Both public and private

owners control critical forest watersheds and, although the most critical areas are not suitable for

timber production, they are surrounded by timber-
must be carefully managed if brought

orest includes recreation sites and

ake the unique forests accessible

The cool climate and scenic beauty attract

any visitors each year. Forest management to enlities is essential, and produces ret be measured in dollars.

al forest resources inventory

leans, LA: U.S. Department of

Service Southern Forest Exper-

. The forest resources of

ice. Resour. Bull. SO-%. New Orleans, LA:

artment of Agriculture, Forest Service,

nt Station; 1982. 59 p.

Silander, S; Liegel, L. Reities in the Luquillo Exech. Rep. SO-44. New

leans, LA: U.S. Department of Agriculture,

est Service, Southern Forest Experiment Sta-

, Recreational Developany. State comprehensive outdoor recreation plan, 1979-1981. PR, 1979. 57 p. & app.

awkins, H. C. Estimating total volume of some

Caribbean trees. Caribbean Forester 22: 62-63;

1961.

Ewel, J. J.; Whitmore, J. L. The ecological life zones of

Puerto Rico and the U.S. Virgin Islands. Res. Pap.

ITF-18. Rio Piedras, PR: U.S. Department of Agriculture, Forest Service, Institute of Tr

Forestry; 1973. 72 p. & map.

Gulick, L. H. Usos de terrenos. San Juan, Puert

Departamento de Agricultura y ~orn~r~io;

Series of maps.

Holdridge, L. R. Life zone ecology. Rev. e

CR: Tropical Science Center; 19

Little, E. L.; Wadsworth, F. II.

Puerto Rico and the Virgin Isla

No. 249. Wash. DC: U.S. Department of

ture, Forest Service; 1964. 548 p

Little, E. L.; Woodbury, R. 0.; Wads

of Puerto Rico and the Virgin

ume. Agric. Handb. No. 449. Wash.

Department of Agriculture, F

1024 p. and illus.

Lugo, A. E.; Schmidt, R.; Brown, S. Tropical forests in

the Caribbean. Ambio lO(6): 318-324; 1981.

Wadsworth, F. H.; Birdsey R. A. A new look at the

forests of Puerto Rico. San Juan, PR: 9th Puerto

Rico Department of Natural Resources Symposium;

1982, p. 12-27.

Wadsworth, F. W.; Solis, E. Population and employment problems in the Toro Negro Forest. Caribbean

Forester 10(l): 59-68; 1949.

Watson, K. Condition and growth of plantations in

the Toro Negro Forest, Puerto Rico, with

on Hibiscus elatus Sir. Project report; 19

am.
er an

-

divis Ti
rees of any size, or fo~me~ly having had such

er and not currently developed for ~onforest

andonm~~t of co

gs; that is, all live trees

ive trees that are unantable for sawlogs now or ~rospe~tiveIy be-

~~~b~r trees-crowing-sto

timeters and larger in d.b.h. for s

centimeters and larger for hardwoo

at least one 3.5 meter sawlog.

letimber trees-Growing-stock tr

2 centimeters in d.b.h. for softwoods

27.5 centimeters for hardwoods, and of goo

vigor.

Saplings-Growing-stock trees

timeters in d.b.h., and of good form

e of sawt er--Net vol

portion of sawtimber trees in cu

according to the International

a one-meter section

imbs or other cull.

e of Gael-Volume 0

ing stock, rough, rotten, and salv

centimeters and larger in d.b.h.,

imum lo-centimeter diameter o

imum length of any section includ

asal area-The area in square

ters above ground.

.-Cows.) Little

Helecho giga~te

Palma de sierra

IIiguillo

Guacimilla

Corcho

Jaguilla

ee s

Code number

193

196

197

198

200

201

20

204

205

211

213

215

221

224

230

231

236

240

242

244

245

248

251

252

255

256

279

280

298

313

330

332

333

341

364

413

485

489

518

523

540

548

549

550

554

560

568

578

579

585

586

592

endro~an~ arboreus ewe. & Plan&.

Vitex di~ari~ata

Solarium rugosu

Tabeb~ia heter

Coffea arabiea L.

Guettarda seabra 6.1

Urban.

Nephelea ~o~ori~ensis (Spreng.) Tryon

Alsophila bryophila Tryon

b~attarum Spreng.

is racemosa (L.) Urban

Coccoloba sintenisii Urban

eisn.

ctandra membra~acea (SW.) Griseb.

Nectandra patens (SW.) Griseb.

hoebe monta~u (SW.) Griseb.
--.~-

- I

ittle an
etrie t

1 cm. = 0.3937 in.

1 m. = 3.281 ft.

1 km. = .6214 mi.

1 sq.m. = 10.7639 sq.ft.

1 sq.km. = 0.3861 sq.mi.

1 ha. = 2.471 ac.

1 cu.m. = 35.3145 tuft.

1 sq.m.lha. = 4.356 sq.ft./ac.

1 cu.m.lha. = 14.2

Prism size

Grid spacing

Cluster point spacing

Fixed plot size

Breast height

Stump height

Diameter classes

Tree size classes

Sapling

Poletimber

(hardwood)

Sawtimber

(hardwood)

Sawtimber

Cubic volume

§oftwood

inimum len

Cubic section

Sawlog

Sawtimber tree

Page

................. 16

......................... 16

16

......... 17

................................................................................... 17

lass and owner ion 1983 .................................... 17

...................... 18

area by forest class ‘region,

.....................

1983 ...............

ic forest, 1983 .............

18

18

18

s 1983 . . . . . . . . . . ..~....._.........“.............................. 19

19

20

I........l...~..1I_._...“I*....................~...........

sal area plurality, Toro

20

21

21

. . . . . . ..~..._....I”.~...........‘...~..”...I.”~...~...........~............. 22

22

~.*.~.~~~..~.~~~~...~...~1.~~.~*.~....1..................... 23

24

24

n, 1983 . . . . . . . . . . . . . . . 25

basal area plurality,

. . . . . . . . . . . . . . . . . ..1.~1.......1..I....................

y basal area plurality,

. . . . . . . . . . . . . . . .

1 area plurality,

.I.. . . ..~...“~..**........................

. . . . . . . . . . . . . . . . .

26

27

28

29

15
Table l.-Physiographic characteristics by forest class, Toro Negro public forest, 1983

Characteristic

(units) Statistic

Plantations

Forest class All

Other timberland Upper mountain Palm Dwarf Cl*SeS

Elevation Mean: 830 820 1010 980 1150 920

(meters) Range: 730-890 710-950 900-1200 780-1200 1050-1250 710-1250

Rainfall’ Mean: 2500 2450 2560 2570 2670 2520

(millimeters) Range: 2400-2600 2300-2600 2400-2800 2300-2900 2300-2800 2300-2~QQ

Slope2 Mean: 4 0 50 70 55 7 0 5 5

(percent) Range : 20-50 20-70 60-80 30-70 70-80 20-80

Distance to road Mean: 320 280 770 720 670 520

(meters) Range: 100-600 O-800 200-1600 O-1800 100-1100 O-1800

Distance to water Mean: 290 300 380 310 330 320

(meters) Range: 40-460 20-740 80-830 lo-760 120-680 lo-830

‘Mean annual precipitation from isohyet ma (Commonwealth of Puerto Rico 1979).

2Average slope at each plot location.

Table 2.-Physiographic characteristics of private timberland by forest class, Toro Negro region, 1983

Characteristic

(units) Statistic

Secondary forest

Forest class

Abandoned coffee shade Active coffee shade

All

classes

Elevation Mean: 750 790

(meters) Range: 380-960 630-1000

Rainfall1 Mean: 2220 2180

(millimeters) Range: 1800-2700 1600--2400

Slope2 Mean: 5 0 55

(percent) Range: 20-90 20-80

‘Mean annual precipitation from isohyet map (Commonwealth of Puerto Rico 1979).

2Average slope at each plot location.

470 710

350490 350-1000

2230 2210

2100-2300 1600-2700

60 50

20-80 20-90

Table 3.-Forest characteristics by forest class, Toro Negro public forest, 1983

Characteristic

(units)

Forest class

Statistic All

Plantations Other timberland Upper mountain Palm Dwarf classes

Basal area1

(m2/ha)

Number of trees’

Wemslha)

Mean diameter2

(centimeters)

Mean canopy height3

(meters)

Total volume4

(m3/ha)

Timber volume5

(m3/ha)

Mean:

Range:

Mean:

Range:

Mean:

Range:

Mean:

Range:

Mean:

Range:

Mean:

29.5 26.1

24.1-36.6 14.0-35.9

2039 2907

1077-2878 1549-4775

14.2 10.8

11.7-18.6 7.7-13.6

22.2 13.5

15.7-26.8 8.5-18.4

321.4 174.9

238.8-423.8 66.6-311.4

184.5 124.6

160.0-213.2 50.2-245.9

31.8 34.5

26.2-42.9 23.9-42.4

2926 2206

21024406 1457-3506

12.1 14.1

9.3-14.3 11.0-17.4

10.4 11.1

8.0-13.5 8.6-14.7

176.2 200.1

85.9-296.7 113.8-279.1

20.6

12.1-31.0

2869

2650-3136

9.

7.0-11.8

6.7

5.6-7.9

73.9

47.6-114.1

29.3

12.1-42.9

2601

12.3

7.0-18.6

12.8

5.6-26.8

192.3

47.6-423.8

137.7

50.2-245.9

‘All trees 2.5 cm. d.b.h. and larger.

2Quadratic mean at each plot location.

3Based on dominant and codominant trees.

4Total overbark volume of trees 12.5 cm. and larger using equation by

6All sound wood of trees 12.5 cm. and larger, from stump to a 10 cm. minimum diameter.

16
Table 4.-Forest characteristics of private timberland by forest class, Toro Negro region, 1983

Characteristic

(units) Statistic

Secondary forest

Forest class

Abandoned coffee shade Active coffee shade

All

classes

Basal area1 Mean: 13.5 17.6 7.8 13.5

(m‘%a) Range: 6x9-27.8 13.0-21.1 3.8-14.3 as-27.a

Number of trees’ Mean: 1672 2383 1840 1869

(stemsha) Range: 16-5146 924-4596 697-2525 16-5146

Mean diameter” Mean: 10.8 11.2 7.4 10.3

(centimeters) Range: 4.8-17.4 6.0-15.9 5.4-8.5 4.8-17.4

Mean canopy height3 Mean: 12.0 15.0 12.2 12.7

(meters) Range: 6.0-17.2 7.9-23.7 12.1-12.5 6.0-23.7

Total volume4 Mean: 95.1 127.6 52.7 95.3

(m3/ba1 Range: o-245.9 27.9-167.6 21.8-111.0 o-245.9

Timber volume5 Mean: 54.9 80.4 22.5 58.4

hnvha) Range: o-240.7 17.7-115.9 6.8-43.4 o-240.7

‘All trees 2.5 cm. d.b.h. and larger.

2Quadratic mean at each plot location.

“Based on dominant and codominant trees.

*Total overbark volume of trees 12.5 cm. and larger using equation by Dawkins (1961).

“All sound wood of trees 12.5 cm. and larger, from stump to a 10 cm. minimum diameter.

Table 5.-Average number of live trees by diameter class and forest class, Toro Negro region, 1983l

Diameter

class (cm.) Plantations

Public forest class

Other timberland Upper mountain Palm Dwarf

Private

timberland

5

10

15

2 0

25

3 0

35

4 0

45

50

55

60

65 and greater

.---___I_----_____- ---___-----_

1,405 1,963

245 414

124 206

73 177

4 4 74

4 4 37

32 16

31 10

12 5

8 2

7 1

8 1

5 1

trees per hectare --_--------___-_.---_

1,400 722 1,747

698 533 491

434 287 401

238 500 180

93 130 37

4 0 19 12

11 7 0

9 4 0

2 2 0

0 0 0

1 0 0

1 0 0

0 0 0

____--

1,479

173

6 6

6 8

35

22

10

8

4

1

1

0

Total 2,039 2,907 2,926 2,206 2,869 1,869

‘Totals may not add due to rounding.

Table 6.-Area by land class and owner, Toro Negro region,’ 1983

Land

class

Owner class

Public Private All owners

Timberland

Other forest land

Nonforest land

cuerdas2 hectares

2,603 1,024

3,854 1,518

181 71

cuerdas hectares cue&as hectares

48,542 19,111 51,145 20,135

2,080 a19 5,934 2,337

36,061 14,197 36,242 14,268

Total land 6,638 2,613 86,683 34,127 93,321 36,740

‘Includes the area within 2 USGS 7.5 minute quadrangles: Orocovis and Jayuya.

2Local unit of measure. One cuerda==0.3937 hectare.

17
Table ‘I.-Fare& area by forest class and division, Toro Negro public forest, 1983

Forest Public forest division Total

class El Guineo DoiIa Juana Matrullas public

_________________________ hectares __________________________

Timberland

Plantations 0 101 5 0 151

Other timberland1 423 205 245 a73

Total 423 306 295 1,024

Other forest

Upper mountain 221 4 0 225

Palm 652 99 53 804

Dwarf 489 0 0 489

Total 1,362 103 53 1,518

All forest land 1,785 409 348 2,542

‘Includes abandoned coffee shade and other successional forest types.

Table B.-Forest area by forest class and life zone l, Tore Negro public forest, 1983

Forest

class

Life zone

Life zones

Subtropical wet forest Lower montane wet forest

____________________________hectares ____________________________

Plantations 151 0 151

Other timberland2450 0 450

Upper mountain 4 221 225

Palm 152 652 804

Dwarf 0 489 489

Total 757 1,362 2,119

‘Life zones detined by Holdridge (1967).

2Excluding 423 hectares of timberland in El Guineo division.

Table 9.-Private timberland area by forest class and life zone’, Toro Negro region, 1983

Life zone

Forest All

class Subtropical Subtropical Lower montane life zones

moist forest wet forest wet forest

_________________________ hectares __________________________

Secondary forest 2,248 6,746 2,248 11,242

Abandoned coffee shade 0 3,373 1,124 4,497

Active coffee shade 1,124 2,248 0 3,372

Total 3,372 12,367 3,372 19,111

‘Life zones defined by Holdridge (1967).

Table IO.-Forest area by forest class and past disturbance I, Toro Negro public forest, 1983

Forest

class Coffee shade

Past land use

Pasture Brush Forest Total

Plantations

Other timberland2

Upper mountain

Palm

Dwarf

____________________________ hectares ____________________________

50 0 34 67 151

110 9 0 54 196 450

0 0 0 225 225

2 6 0 0 778 804

0 0 0 489 489

Total 186 90 88 1,755 2,119

“From historical land use map (Gulick 1951).

2Excluding 423 hectares of timberland in El Guineo division.

1 8
Table Il.-Number of live trees by species and diameter class, ranked by basal area plurality, Toro Negro public

plantations, 1983 1

Species

code Scientific name

Total

basal area

(square meters)

Tree size class2 All

Sapling Poletimber Sawtimber classes

186

211

6 4

109

2 0

255

188

236

118

7

201

6 2

180

129

Eucalyptus robusta

Micropholis chrysophylloides

Inga Vera

Guarea guidonia

Cecropia peltata

Nephelea portoricensis

Eugenia jambos

Tabebuia heterophylla

Alchornea latifolia

Prestoea montuna

Didymopanax morototoni

Inga fagifolia

Buchenavia capitata

Sap&m laurocerasus

Other species (33)

2,810

169

118

112

111

105

8 3

7 3

69

6 7

6 2

49

49

4 8

534

___-_--__---__ thousand trees _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

3 8 1 8 29

3 8 0 11

5 3 * 8

0 3 1 3

0 2 1 2

1 4 0 0 1 4

2 6 1 0 2 7

10 2 0 1 2

8 2 0 10

3 1 0 4

0 2 * 2

0 1 * 1

0 0 * *

6 0 * 6

172 4 1 177

All species 4,460 249 3 6 2 3 308

---

‘Totals may not add due to rounding.

“Saplings are 2.5 to 12.5 cm. d.b.b.; poletimber trees are 12.5 to 27.5 cm. d.b.h.; sawtimber trees are larger than

27.5 cm. d.b.b.

*Less than 500 trees.

Table 12.-Number of live trees by species and diameter class, ranked by basal area plurality, Tore Negro other

public timberlandl, 19%32

Species

code Scientific name

Total

basal area

(square meters)

Tree size class3 All

Sapling Poletimber Sawtimber classes

7

2 0

188

109

6 2

211

169

255

180

224

236

118

186

111

162

6 4

106

201

87

149

150

192

I.73

Prestoea montana

Cecropia peltata

Eugenia jambos

Guarea guidonia

lnga fagifolia

Micropholis chrysophylloides

Casearia arborea

Nephelea portoricensis

Buchenavia capitata

Cordia sulcata

Tabebuia heterophylla

Alchornea latifolia

Eucalyptus robusta

Swietenia macrophylla

Clusia grisebachiana

inga vera

Dacryodes excelsea

Didymopanax morototoni

Ormosia krugii

Sloanea berteriana

Hibiscus tiliaceus

kiyrcia deflexa

Homalium racemosum

Other species (50)

All species

-_

1.245

1;091

834

758

735

688

622

580

400

392

389

375

293

293

204

172

150

I.48

140

136

121

113

112

1,750

4

5

133

2 5

4 2

4 3

93

109

0

7

11

2 1

0

0

0

1 2

0

7

2

1

5 3

3 1

1 6

456

- thousand trees ---------- _--_-

4 4 0 4 8

2 0 5 3 0

1 3 4 150

9 5 3 8

1 4 2 5 8

9 3 5 5

1 4 1 108

0 0 109

0 2 2

1 2 * 19

1 4 0 2 5

7 1 29

0 2 2

3 2 5

7 0 7

2 1 1 4

* 1 1

4

* 11

1 1 4

1 1 2

0 0 5 3

3 0 3 4

3 0 19

2 6 3 485

11,739 1,070 205 3 3 1,308

‘Excluding 423 hectares of timberland in El Guineo division.

2Totais may not add due to rounding.

3Saplings are 2.5 to 12.5 cm. d.5.h.; poletimber trees are 12.5 to 27.5 cm. d.b.h.; sawtimber trees are larger than

27.5 cm. d.b.h.

“Less than 500 trees.

19
Table 1X-Numberof live trees by species and diameter class, ranked by basal area plurality, Toro Negro public

upper mountain forest, 1983’

Specie5

code Scientific name

Total

basal area

(square meters)

Tree size class” All

Sapling Poletimber Sawtimber classes

7

21.1

2 0

619

255

139

1

196

162

6 2

136

169

248

6 4

709

118

121

Prestoea montana

Micropholis chry.sophyCloides

Cecropia peltata

Tetrazygia biflora

Nephelea portoricensis

Matayba domingensis

Cyathea arborea

Calycogonium squamulosum

Clusia grisebachiana

Inga fagifalia

Cyrilla racemiflora

Casearia arborea

Rondeletia portoricensis

Inga vera

Tabebuia schumanniana

Alchornea latifolia

Drypetes glauca

Other species (25)

----_---_I_-_--thousand trees _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

1,999 6 7 8 0 8 4

1,067 4 6 2 2 3 7 1

593 * 7 4 11

519 12 10 2 2 5

342 5 7 2 0 5 9

299 3 9 3 0 4 2

269 3 0 5 0 3 5

242 2 4 4 * 2 9

215 0 6 0 6

194 0 3 1 4

187 3 7 1 11

140 15 5 0 2 0

126 1 2 2 0 1 4

125 3 1 1 5

9 4 3 2 * 5

9 4 3 4 * 8

8 4 4 5 2 0 4 7

571 173 9 * 182

All species 7,158 472 172 1 4 658

‘Totals may not add due to rounding.

%aplings are 2.5 La 12.5 cm. d.b.h.; poletimber trees are 12.5 to 27.5 cm. d.b.h.; sawtimber trees are larger than

27.5 cm. d.b.h.

*Less than 500 trees.

Table Il.-Number of live trees by species and diameter class, ranked by basal area plurality, Toro Negro public

palm forest, 1983I

Species

code Scientific name

Total

basal area

(square meters)

Tree size class2 All

Sapling Poletimber Sawtimber classes

7

1

211

2 0

248

6 2

196

139

129

255

Prestoea montana

Cyathea arboreu

Micropholis chrysophylloides

Cecropia peltata

Rondeleiia portoricensis

Inga fagifolia

Calycogonium squ.amulosum

Matayba domingensis

Sapiurri laurocerasus

Nepheba portoricensis

Other species (25)

--

16.530

2;196

1,989

1,157

1,086

632

529

301

299

267

2,771

___________ __ thousand trees - - - - - - - -

3 3 535 3

134 5 3 1

9 9 4 0 7

15 19 5

6 0 2 1 2

5 7 3

5 6 1 3 0

9 11 1

0 2 2

4 9 0 0

549 3 6 3

- - - _ _ - _

571

187

146

3 9

8 3

1 6

6 9

2 2

5

4 9

587

All species 27,757 1,010 737 2 7 1,774

‘Totals may not add due to rounding.

“Saplings are 2.5 to 12.5 cm. d.b.h.; poletimber trees are 12.5 to 27.5 cm. d.b.h.; sawtimber trees are larger than

27.5 cm. d.b.h.

2 0
Table IS.-Number of live trees by species and diameter class, ranked by basal area plurality, Toro Negro public

dwarf forest, 1983 l

Total Tree size class2 Species

code Scientific name basal area All

(square meters) Sapling Poletimber Sawtimber classes

________--_---- thousand trees _ __ - - __ - - -_ - - - -

1 Cyathea arborea 2,034 187 36 0 223

162 Clusia grisebachiana 1,392 67 51 0 117

7 Prestoea montuna 1,223 0 49 0 4 9

196 Calycogonium squamulosum 1,045 53 35 4 9 2

251 Cyathea aquilina 997 80 34 0 114

139 Matayba domingensis 697 27 25 0 5 2

255 Nephelea portoricensis 407 107 6 0 113

185 Calyptrunthes krugii 353 40 18 0 5 8

136 Cyrilla racemiflora 310 40 18 0 5 8

709 Tabebuia schumanniana 270 27 11 0 3 7

4 % Ocoteu leucoxylon 234 27 11 0 3 8

625 Didymopanax gieasonii 188 67 0 0 6 7

2 0 Cecropia peltata 136 0 0 2 2

203 Rapanea coriacea 136 0 a 0 8

144 Meliosma herbertii 117 40 0 0 4 0

489 Rhamnus sphaerosperma 116 40 0 0 4 0

187 Eugenia domingensis 113 40 0 0 4 0

Other species (9)

-

288 254 0 0 254

All species 10,054 1,095 302 6 1,403

‘Totals may not adddue to rounding.

Qaplings are 2.5 to 12.5 cm. d.b.h.; poletimber trees are 12.5 to 27.5 cm. d.b.h.; sawtimber trees are larger than

Table 16.~Number of live trees by species and diameter class, ranked by basal area plurality, Toro Negro private

timberland, 2983”

-

Species Total Tree size class2

code cientific name basal area All

(square meters) Sapling Poletimber Sawtimber classes

109

6 4

I

2 0

188

200

8 1

118

6 2

240

8 4

151

133

3 2

131

172

224

5 1

100

251

203

221

2 4

1 6

255

107

Guarea guidonia

Inga vera

Prestoea montana

Cecrop~ ~e~t~ta

~u~enia jambos

~endro~an~ arboreus

Andira inermis

Al~hornea latifolia

Inga fa~ifo~ia

Coffea arabica

Erythrina poeppigiana

Casearia sylvestris

Cordia sulcata

Persea amerieana

Citrus sinensis

Cyalhea aquilinu

apanea coriacea

ordia alliodora

Ficus perforata

micrantha

ea portorieensis

Tetragastris ba~sam~fera

Other species (43)

28,671

28,091

21,545

17,376

15,221

12,975

9,642

9,145

7,640

6,754

6,557

6,557

5,704

5,115

5,038

4,719

4,055

3,747

3,745

3,386

3,220

2,994

2,810

2,655

2,640

2,603

34.931

All species 257,540 31,576 3,245 892 35,713

2Saplings are 2.5 to 12.5 cm. d.b.h.; poletimber trees are 12.5 to 27.5 cm. d.b.h.; sawtimber trees are larger than

27.5 cm d.b.h.

__-_“-- -----_-- thousand trees ------ ___-____-

2,946 178 135 3,258

736 286 166 1,188

0 682 1 4 696

460 5 7 133 650

3,867 110 2 2 3,999

829 126 6 9 1,023

276 252 1 2 540

184 205 2 9 418

9 2 1 7 6 5 174

7,181 0 0 7,181

0 6 0 1 4 7 5

0 9 5 3 3 128

9 2 105 19 216

184 5 8 2 0 261

9 2 0 19 111

3,959 0 0 3,959

276 101 0 377

0 7 1 2 5 9 5

552 9 6 0 649

460 0 0 460

921 4 6 0 967

184 18 21 223

0 4 8 3 5 2

9 2 3 1 15 138

92 118 0 210

368 5 3 0 421

7,733 432 8 0 8,244

2 1
Table 17.--Dominant seedlings on public and private forests by forest class and species, Toro Negro region, 1983

Species

code Scientitic name

Public forest class Private

Plantations Other timberland Upper mountain Palm Dwarf forests

7

62

6 3

109

121

169

172

177

188

191

192

193

196

211

240

255

256

413

602

612

Prestoea montana

Inga fagifolia

Inga quaternata

Guarea guidonia

Drypetes glauca

Casearia arborea

Casearia sylvestris

Daphnopsis philippiana

Eugenia jumbos

Eugenia stahlii

Myrcia deflexa

Myrcia splendens

Calycogonium squamulosum

Micropholis chrysophylloides

Cofia arabica

Nephelea portoricensis

Alsophila bryophila

Guarea rameflora

Miconia laevigata

Miconia subcorymbosa

Other species (431

_-__________-__

2 0

0

0

0

8

3

5

0

8

3

1

0

0

0

0

5

1

0

5

0

41

4

4

0

0

0

6

2

3

1 1

4

8

0

0

3

1 1

3

6

3

6

3

23

percent’ --------- -_---_---___________

3 23 4 2

4 3 0 0

0 0 0 5

0 0 0 5

1 0 0 3

0 1 0 0

0 3 0 8

22 1 5 0 2

1 0 0 0

6 0 0 1

3 3 19 4

0 0 0 4

4 6 4 0

3 7 0 2

1 1 0 32

1 1 4 0

0 1 0 0

6 7 0 1

5 4 0 2

5 2 4 0

3 5 23 65 29

All species 100 100 100 100 100 100

lProportion of all seedlings tallied within each class.

Table 18.-Volume of timber’, growing stock2, and sawtimber by species and tree size class4, Toro Negro public

plantations, 19835

Species

code Scientific name Timber volume Growing-stock volume Sawtimber volume

Poletimber Sawtimber Total Poletimber Sawtimber Total Total

186

211

2 0

6 4

109

7

180

84

161

6 2

188

--

Eucalyptus robusta

Micropholis

chrysophylloides

Cecropia peltata

Inga vera

Guarea guidonia

Prestoea montana

Buchenavia capitata

Erythrina poeppigiana

Calophyllum calaba

Inga fagifolia

Eugenia jumbos

Other species (10)

-------_-___________--------- cubic meters ------ -----___--___ ------------

1,145 20,756 21,901 1,145 16,578 17,723 7,545

841 0 841 605 0 605 0

251 363 614 244 307 551 125

358 215 573 312 138 450 54

205 344 549 205 206 411 51

461 0 461 0 0 0 0

0 454 454 0 325 325 126

0 311 311 0 0 0 0

0 287 287 0 162 162 0

82 195 277 8 2 67 149 0

268 0 268 0 0 0 0

690 636 1,326 690 471 1,161 169

All species 4,301 23,561 27,862 3,283 18,254 21,537 8,070

‘Volume of all sound wood in all live trees to a minimum 10 cm. diameter outside bark.

2Volume of sound wood (less sound cull volume) in growing-stock trees of commercial species to a minimum 10 cm.

diameter outside bark.

3Net volume of the sawlog portion of sawtimber trees of commercial species, calculated according to the International rule.

*Poletimber trees are between 12.5 and 27.5 cm. d.b.h., and sawtimber trees are greater than 27.5 cm. d.b.h.

5Totals may not add due to rounding.

22
Table 19.-Volume of timber’, growing stock2, and sawtimber by species and tree size class 4, Toro Negro other public timberland5, 19836

Species

code

I

20

188

109

180

211

6 2

186

111

118

224

169

236

106

87

149

6 4

139

201

162

242

-

Scientific name

Prestoea montana

Cecropia peltata

Eugenia jumbos

Timber volume Growing-stock volume Sawtimber volume

Poletimber Sawtimber Total Poletimber Sawtimber Total Total

____________-__________________________ cubic m&rs _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

&area guidonia

Buchenauia capitata

Micropholis

chrysophylloides

Inga fagifolia

Eucalyptus robusta

Swietenia macrophylla

Alchornea latifolia

Cordia sulcata

Casearia arborea

Tabebuia heterophylla

Dacryodes excelsea

Ormosia krugii

Sloanea berteriana

Znga Vera

Matayba domingensis

Didymopanax morototoni

Clusia grisebachiana

Faramea occidentalis

Other species (23)

11,106

2,469

2,860

1,239

0

1,127

0 11,106 0 0 0 0

2,988 5,457 2,336 2,347 4,683 1,028

1,722 4,582 0 0 0 0

2,954 4,193 1,111 2,314 3,425 935

3,432 3,432 0 2,418 2,418 785

2,234 3,361 1,025 997 2,022 384

1,766 1,211 2,977 1,519 789 2,308 330

0 2,089 2,089 0 1,660 1,660 680

530 1,312 1,842 530 968 1,498 406

779 987 1,766 767 603 1,370 213

1,406 239 1,645 1,392 I87 1,579 6 8

948 599 1,547 948 78 1,026 2 4

1,385 0 1,385 1,364 0 1,364 0

3 0 1,174 1,204 3 0 839 869 286

296 858 1,154 296 557 853 246

8 4 862 946 8 4 539 623 233

275 564 839 233 289 522 4 9

394 370 764 394 242 636 100

366 318 684 354 192 546 53

588 0 588 491 0 491 0

174 386 560 174 280 454 137

2,393 1,534 3,927 1,953 951 2,904 368

All species 30,215 25,833 56,048 15,001 16,250 31,251 6,325

iVolume of all sound wood in all live trees to a minimum 10 cm. diameter outside bark.

ZVolume of sound wood (less sound cull volume) in growing-stock trees of commercial species to a minimum 10 cm. diameter outside bark.

3Net volume of the sawlog portion of sawtimber trees of commercial species, calculated according to the International rule.

4Poletimber trees are between 12.5 and 27.5 cm. d.b.h., and sawtimber trees are greater than 27.5 cm. d.b.h.

“Excluding 423 hectares of timberland in El Guineo division.

‘jTotais may not add due to rounding.

23
Table 20.-Volume of timber’, growing stock2, and sawtimber by species and tree size clas&, Tore ro private timberland, 19835

Specie8

code Scientific name

Timber volume

Poletimber Sawtimber

Growing stock volume ~~wti~~~Q~ volume

Total - Poletimber Total Total

7

109

2 0

6 4

200

118

6 2

8 4

3 2

81

151

188

221

133

51

131

224

8 6

3 4

211

100

Prestoea montana

Guarea guidonia

Cecropia peltata

Inga oera

Dendropanax arboreus

Alchornea latifolia

Inga fagifolia

Erythrina poeppigiana

Pisonia subcordata

Andira inermis

Montezuma speciossima

Eugenia jambos

Cordia alliodora

Spondias d&is

Persea americana

Mangifera indica

Cordia sulcata

Lonchocarpus

pentaphyllus

Magnolia portoricensis

Micropholis

chrysophylloides

Citrus sinensis

Other species (16)

183,300 13,200 196,600 0

41,300 97,500 138,800 37,900

19,900 106,200 126,100 19,900

45,100 70,000 115,100 37,600

8,200 44,800 53,100 5,600

42,800 8,600 51,400 42,600

7,000 39,300 46,300 6,000

15,800 24,700 40,600 0

12,500 27,100 39,700 12,500

27,300 6,200 33,500 25,100

7,600 22,900 30,500 1,600

13,400 14,200 27,600 0

5,500 17,700 23,200 5,500

8,700 12,300 21,100 5,400

4,100 13,300 17,400 2,900

0 15,900 15,900 0

15,400 0 15,400 14,600

0

83,600

86,400

37,066

37,800

7,600

24,900

0

15,300

106,300

74,800

43,400

50,200

30,900

0

0

16,100

5,800

11,600

0

0 12,000 12,000 0 11,900 11,900 5,100

0 11,300 11,300 0 10,400 10,400 1,800

1,600 9,600 11,300 0 7,800 7,800 2,800

11,100 0 11,100 0 0 0 0

35,500 42,500 78,000 31,900 28,400 60,400 8,400

All species 506,300 609,600 1,115,900 249,500 392,900 642,400 114,000

‘Volume of all sound wood in all live trees to a minimum 10 cm. diameter outside bark.

2Volume of sound wood (less sound cull volume) in growing-stock trees of commercial species to a ~i~irnum 10 cm. diameter outside bark.

3Net volume of the sawlog portion of sawtimber trees of commercial species, calculated according to the international rule.

4Poletimber trees are between 12.5 and 27.5 cm. d.b.h., and sawtimber trees are greater than 27.5 cm. d.b.h.

5Totals may not add due to rounding.

Table 2l..-Volume of timber by use category’ and forest class, Toro Negro region, 19813”

Species Use

category

- -

Public plantations

Forest class

Other public timberland3 rivate timberland

High quality

sawtimber

______--_-________--_______cubic metersper hectare _ _ _ _ _ _ _ _ _ _ _ _ _ I _ I _ _ I _ _ _ _ _ _ _ _

15.9 40.9 13.0

Utility poletimber

and sawtimber 152.9 32.4 22.2

Unusable for

timber product

Uncommon specie8

Ail timber

6.4 39.6 16.7

9.3 11.7 6.5

--~

184.5 124.6 58.

‘Use codes for each species are listed in table8 23, 24, and 25

2Totals may not add due to rounding.

3Excluding 423 hectares of timberland in El Guineo division.

2 4
Table 22.-Volume of timber by class of timber and forest class, Toro Negro region, 1983’

Class of

timber

Growing-stock trees

Sawtimber trees:

Sawlog portion

Upper stem

Branches and forks

Sound cull

Timber volume

Poletimber trees:

Bole volume

Branches and forks

Sound cull

20.3 33.3 11.2

0.0 0.0 0.1

5.6 31.7 2.5

Timber volume 5.8 64.9 13.8

Rough and rotten trees

Bole volume

Branches and forks

Sound cull

Forest class

Public plantations Other public timberland2 Private timberland

_-_______-____-_____----- cubic meters per hectare _ _ _ _ _ _ - - -_ _ _ _ _ _ _ - _ _ _ _ _ _ _ _

110.2 32.9 13.9

6.7 2.7 2.5

23.4 10.7 4.1

8.7 5.6 2.8

148.9 51.8 23.4

-

5.5 0.5 6.0

2.3 1.4 1.7

1.9 5.8 13.5

Timber volume

All timber

9.7 7.8 21.2

184.5 124.6 58.4

‘Totals may not add due to rounding.

2Exeluding 423 hectares in El Guineo division.

26
Table 23.-Average number of trees by tree class, species, and size class, ranked by basal area plurality, Toro Negro

public plantations, 1983r

Tree

class2

Species Use

Tree size class* All

Scientific name -

- -

code code3

size

Sapling Poletimber Sawtimber classes

Growing

stock

186 2

211 1

6 4 2

109 1

2 0 2

255 3

188 3

236 1

118 2

7 3

201 2

6 2 1

180 1

129 3

Eucalyptus robusta 18 56 120 193

Micropholis chrysophylloides 18 3 8 0 56

Inga Vera 3 2 17 2 51

Guarea guidonia 0 17 3 20

Cecropia peltata 0 10 4 15

Nephelea portoricensis 73 0 0 73

Eugenia jumbos 155 4 0 159

Tabebuia heterophylla 6 8 10 0 78

Alchornea latifolia 5 4 15 0 69

Prestoea montana 18 10 0 28

Didymopanax morototoni 0 12 2 15

Inga fagifolia 0 7 0 7

Buchenavia capitata 0 0 2 2

Sapium laurocerasus 3 6 0 2 39

Other species 786 25 5 816

Total growing stock 1,259 221 14.1 1,620

_ .-.. -I

Rough and

rotten trees

All species 391 2 0 7 419

All live

trees

Total 1,650 241 148 2,039

_ _ _ _ _ _ _ _ _ - _ _ _ trees per hectare --_I _ _ _.

-

‘Totals may not add due to rounding.

2Growing-stock trees are currently or prospectively merchantable based on form and soundness, regardless of

species.

%igh quality sawtimber is code I; utility poletimber and sawtimber is code 2; currently unusable timber is code 3.

*Saplings are 2.5 to 12.5 cm. d.b.h.; poletimber trees are 12.5 to 27.5 cm. d.b.h.; sawtimber trees are larger than

27.5 cm. d.b.h.

26
Table 24.-Average number of trees by tree class, species, and size class, ranked by basal area plurality, Toro Negro

other public timberland’, 19832

Tree

class3

Species Use Tree size class5 All

code code4 Scientific name size

Sapling Poletimber Sawtimber classes

_---------_-- treesper hectare -------------

Growing

stock

7 3

2 0 2

188 3

109 1

6 2 1

211 1

169 3

255 3

180 1

224 2

236 1

118 2

186 2

111 1

162 3

6 4 2

106 1

201 2

87 2

149 2

150 3

192 2

173 2

Prestoea montana

Cecropia peltata

Eugenia jambos

Guarea guidonia

Inga fagifolia

Micropholis chrysophylloides

Casearia arborea

Nephelea portoricensis

Buchenavia capitata

Cordia sulcata

Tabebuia heterophylla

Alchornea latifolia

Eucalyptus robusta

Swietenia macrophylla

Clusia grisebachiana

Inga Vera

Dacryodes excelsea

Didymopanax morototoni

Ormosia krugii

Sloanea berteriana

Hibiscus tiliaceus

Myrcia deflexa

Homalium racemosum

Other species

Total growing stock

8 9 9 0 107

12 4 5 11 67

271 24 3 298

5 4 18 10 83

75 29 4 109

9 5 21 4 119

178 27 1 205

3 6 0 0 3 6

0 0 4 5

15 27 1 4 3

25 31 0 5 6

46 15 3 6 4

0 0 3 4

0 6 5 10

0 14 0 14

26 3 1 3 0

0 0 3 3

15 9 1 25

5 3 2 9

2 1 3 6

89 0 0 89

6 9 6 0 76

35 7 0 42

787 57 6 849

1,842 442 6 4 2,348

Rough and

rotten trees

All live

trees

All species 535 15 9 559

Total 2,377 456 74 2,907

‘Excluding 423 hectares of timberland in El Guineo division.

2Totals may not add due to rounding.

sGrowing-stock trees are currently or prospectively merchantable based on form and soundness, regardless of

species.

*High quality sawtimber is code 1; utility poletimber and sawtimber is code 2; currently unusable timber is code 3.

5Saplings are 2.5 to 12.5 cm. d.b.h.; poletimber trees are 12.5 to 27.5 cm. d.b.h.; sawtimber trees are larger than

27.5 cm. d.b.h.

27
Table X5.-Average number of trees by tree class, species, and size class, ranked by basal area plurality, Toro Negro

private timberland, 1983’

Tree

class2

Species Use Tree size class* All

code code3 Scientific name size

Sapling Poletimber Sawtimber classes

Growing

stock

109 1

64 2

7 3

20 2

188 3

200 2

81 1

118 2

6 2 1

240 3

84 3

151 1

133 3

32 2

131 3

172 3

224 2

51 3

100 3

251 3

203 3

221 1

24 3

16 3

255 3

107 1

Guarea guidonia 149 6

Inga vera 3 9 10

Prestoea montana 0 14

Cecropia peltata 24 2

Eugenia jambos 4 3 0

Dendropanax arboreus 3 4 3

Andira inermis 14 12

Alchornea latifolia 10 9

Inga fagifolia 5 1

Coffea arabica 39 0

Erythrina poeppigiana 0 1

Montezuma speciossima 0 0

Spondias d&is 5 6

Pisonia subcordata 5 3

Mangiferu indica 5 0

Casearia sylvestris 149 0

Cordia sulcata 14 5

Persea americana 0 4

Citrus sine&s 0 0

Cyathea aquilina 0 0

Rapanea coriocea 43 2

Cordia alliodora 10 1

Ficus perforata 0 3

Trema micrantha 5 2

Nephelea portoricensis 0 0

Tetragastris balsamifera 19 0

Other species 318 16

5

4

0

6

0

1

1

2

2

0

*

1

I

1

*

0

0

1

0

0

0

1

*

160

52

14

33

43

39

27

21

8

39

1

1

11

9

5

149

20

5

0

0

46

12

3

7

0

19

338

Total growing stock 930 100 31 1,061

ough and

rotten trees

All species 723 70 15 808

All live

Total

- - - _ _ _ _ _ _ _ _ _ _ trees per hectare _ - - _ - _ - _ _ _ _ _ _

1,652 170 4 7 1,869

‘Excluding 423 hectares of timberland in El Guineo division

2Totals may not add due to rounding.

3High quality sawtimber is code 1; utility poletimber and sawtimber is code 2; currently unusable timber is code 3.

*Growing-stock trees are currently or prospectively merchantable based on form and soundness, regardless of

species.

*Less than one tree per hectare.
Table 26.-Basal area by size class, tree class, and forest class, Two Negro region 1983l

Size class

and

tree class

Public forest class

Plantations Other timberland

All public All private

timberland timberland

Saplings:

Growing stock

Rough and rotten

----_-----___-_______I__ square meters per hectare ----____________________

3.0 4.2 3.9 2.1

.9 1.8 1.5 1.3

Total 3.9 6.0 5.5 3.4

Poletimber trees:

Growing stock

Rough and rotten

5.7 12.0 10.5 2.8

.7 .5 .5 2.2

Total

Sawtimber trees:

Growing stock

Rough and rotten

6.4 12.5 11.0 5.0

18.2 6.7 9.6 3.2

.9 .9 .7 1.9

Total 19.1 7.6 10.5 5.1

All growing stock 27.0 22.9 24.0 8.2

All rough and rotten 2.5 3.1 3.0 5.3

All live trees 29.5

‘Totals may not add due to rounding.

26.1 27.0 13.5

29
Southern Fores

29 p.

The Toro Negro region of Puert

with 20,100 hectares of timberland a

other forest land. Eucalyptus robusta

of the growing stock volume in the

Most eucalyptus plantations in the

harvest and regeneration. Priva

sapling stocking which could be