APPENDIX A

Past and Ongoing Research within the Pringle 

Falls Experimental Forest

&

Past Vegetation Management Activities
Appendix A Page 1 of 5

Figure A-1. Past Research Units and Major roads in the Lookout Mountain Unit. Unit numbers 

correspond with Table A-1.
Appendix A Page 2 of 5

Table A-1. Lookout Mountain Unit Past and Ongoing Research

Unit Activity Scientist(s) Publication(s)

2 Underburning for shrub control in 

1976, 1979, 1980 

R. Martin Martin, 1982. Shrub control by 

burning before timber harvest 

3 Pruning in 1941 in a 55-year-old 

stand 

E. Mowat W. 

Dahms J. 

Barrett J. 

Cahill 

Barrett, 1968. Pruning of 

ponderosa pine... effect on growth. 

Res. Pap. PNW-68. Cahill, 1991. 

Pruning young-growth ponderosa 

pine: product recovery and 

economic evaluation. Forest 

Products Journal 41: 67-73. Fight, 

Bolon, Cahill, 1992. Res. Pap. 

PNW-449. 

4 Ponderosa pine-grand fir spacing 

study K. Seidel 

24 Release and thinning in a 43-

year-old suppressed grand fir and 

Shasta red (noble) fir stand. 

K. Seidel Seidel, 1977. Suppressed grand fir 

and Shasta red fire respond well to 

release. Res. Note PNW-288. 

25 Thinning from above in 1938 in a 

94-year old stand 

E. Mowat J. 

Barrett 

Barrett and Newman, 1974. High 

yields from 100-year-old ponderosa 

pine. Res. Note PNW-220. 

33-

35 

Ponderosa pine-grand fir 

plantation in a spacing study 

K. Seidel Seidel, 1985. A ponderosa pinegrand fir spacing study in central 

Oregon: results after 10 years. Res. 

Note PNW429. 

36-

42 

P and L sale: commercial thinning 

in 1949 

E. Mowat J. 

Sowder 

Sowder, 1953. Lumber grade 

recovery from young ponderosa 

pine. Res. Note RN-88. 

46 Underburned R. Martin Evans, L. 1983. Hydrophobicity of 

cindery typic cryorthents. OSU M.S. 

thesis. 

47 Level-of-Growing-Stock 

established in 1965 in 65-year-old 

ponderosa pine with 6 growingstock levels 

J. Barrett P. 

Cochran W. 

Oliver 

Barrett, 1983. Growth of ponderosa 

pine poles thinned to different 

stocking levels in central Oregon. 

Res. Pap. PNW-311. Cochran and 

Barrett, 1999. Growth of ponderosa 

pine thinned to different stocking 

levels in central Oregon: 30year 

results. Res. Pap. PNW-RP-508. 

Oliver, 2005. The west-wide 

ponderosa pine levels-of-growingstock study at age 40. Gen. Tech. 

Rep. PSW-GTR198. 
Appendix A Page 3 of 5

Figure A-2. Past Vegetation Management Activities & Large Fires from Deschutes National Forest 

GIS Records.

 Silvicultural Codes used in table on following page: 

Harvest Codes

HTH – Commercial thin

HCC – Clearcut

HFR – Final Removal

HPR – Partial Removal

HSH- Shelterwood Harvest

HSL – Selection Cut

HAS – Sanitation Cut

HSV – Salvage 

Stand Improvement Codes

SCN – Cultivation

SPC – Precommercial thin

Reforestation Codes

RPL – Planting 

RNP – natural seeding with site prep

The past activities displayed in the map and described in the following table are reflected in the 

description of the current vegetation and habitat conditions in Chapter 3 of the FEIS. 
Appendix A Page 4 of 5

The following table displays the records of activity in the past activities GIS data, back to 1974. 

Some of the vegetation management is associated with the experimental studies shown in previous 

map. The most recent activity falls under the column ACT1.

POLY_ ACT1

YR

act1 SALE1 ACT2 YR act2 SALE2 ACT3 YR act3 SALE3 UNIT3

13325 SPC 1978 LOOKOUT CT NO 06 HTH 1976 LOOKOUT CT NO 06

13516 RPL 1991 LO STUDY HCC 1988 LO STUDY

13614 RPL 1991 LO STUDY HCC 1988 LO STUDY

13617 HTH 1976 LOOKOUT CT NO 06

13638 RPL 1974 LOOKOUT FIR HCC 1973 LOOKOUT FIR

13650 RPL 1974 LOOKOUT FIR HCC 1973 LOOKOUT FIR

13733 RPL 1991 LO STUDY HCC 1988 LO STUDY

13848 SPC 1978 LOOKOUT CT NO 02 HTH 1973 LOOKOUT CT NO 02

13877 SPC 1978 LOOKOUT CT NO 02 HTH 1973 LOOKOUT CT NO 02

13894 HTH 1973 LOOKOUT CT NO 02

14049 SPC 1978 LOOKOUT CT NO 02 HTH 1973 LOOKOUT CT NO 02

14088 HTH 1973 LOOKOUT CT NO 01

14164 HTH 1973 LOOKOUT CT NO 02

14231 SPC 1978 LOOKOUT CT NO 02 HTH 1973 LOOKOUT CT NO 02

14279 SPC 1978 LOOKOUT CT NO 02 HTH 1973 LOOKOUT CT NO 02

14344 HTH 1973 LOOKOUT CT NO 02

14418 SPC 1977 LOOKOUT CT NO 04 HTH 1974 LOOKOUT CT NO 04

14434 HPR 1975 LOOKOUT CT NO 05

14452 HFR 1981 LOOKOUT OR HSH 1974 LOOKOUT CT NO 04 RNP 1974

LOOKOUT 

CT NO 04 3

14467 SPC 1978 LOOKOUT CT NO 05 HTH 1975 LOOKOUT CT NO 05

14518 HFR 1981 LOOKOUT OR HSH 1974 LOOKOUT CT NO 04 RNP 1974

LOOKOUT 

CT NO 04 3

14552 SPC 1978 LOOKOUT CT NO 04 HTH 1974 LOOKOUT CT NO 04

14577 HSA 1974 FALL RIVER NO 02

14608 HPR 1975 LOOKOUT CT NO 05

14646 HPR 1978 P AND L

14718 HTH 1974 LOOKOUT CT NO 04

14725 HPR 1978 P AND L HTH 1973 LOOKOUT CT NO 01

14740 HSV 1988 LO BLOWDOWN HPR 1975 LOOKOUT CT NO 05

14760 HFR 1978 P AND L HTH 1973 LOOKOUT CT NO 01

14779 SPC 1978 LOOKOUT CT NO 05 HTH 1975 LOOKOUT CT NO 05

14780 HTH 1974 LOOKOUT CT NO 04

14848 HPR 1975 LOOKOUT CT NO 05

14858 SPC 1978 LOOKOUT CT NO 04 HTH 1974 LOOKOUT CT NO 04

14921 SPC 1977 LOOKOUT CT NO 04 HTH 1974 LOOKOUT CT NO 04

15002 SCN 1978 LOOKOUT CT NO 05 HTH 1975 LOOKOUT CT NO 05

15034 HFR 1978 P AND L HTH 1973 LOOKOUT CT NO 01

15069 HTH 1974 LOOKOUT CT NO 04
Appendix A Page 5 of 5

15103 HFR 1978 P AND L HTH 1973 LOOKOUT CT NO 01

15115 SPC 1978 LOOKOUT CT NO 05 HTH 1975 LOOKOUT CT NO 05

15128 HPR 1975 LOOKOUT CT NO 05

15280 SCN 1978 LOOKOUT CT NO 05 HTH 1975 LOOKOUT CT NO 05

15281 SPC 1978 LOOKOUT CT NO 04 HTH 1974 LOOKOUT CT NO 04

15313 HTH 1974 LOOKOUT CT NO 04

15324 SPC 1978 LOOKOUT CT NO 05 HTH 1975 LOOKOUT CT NO 05

15522 HTH 0 NUT

15549 HSL 1998 SIBUN FROLIC HSL 1994 SIBUN FROLIC HTH 1973

LOOKOUT 

CT NO 01 1