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100 results found
An empirical investigation of stumpage price models and optimal harvest policies is conducted for loblolly pine plantations in the southeastern United States. The stationarity of monthly and quarterly series of sawtimber prices is analyzed using a unit root test. The statistical evidence supports…
Author(s): Robert G. Haight, Thomas P. Holmes
Keywords: Forest management, optimal harvesting, time-series analysis
Source: Natural Resource Modeling 5(4):423-443
Year: 1991
The goal of this simulation study was to provide information for defining thinning regimes for young Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in the Central Cascades Adaptive Management Area, located in west-central Oregon. Specifically, this study used the ZELIG.PNW (3.0) gap…
Author(s): Steven L. Garman, John H. Cissel, James H. Mayo
Keywords: Forest management, alternative thinning strategies, late-successional development, simulation modeling
Source: Gen. Tech. Rep. PNW-GTR-557. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 57 p
Year: 2003
Public land managers in the United States are increasingly interested in managing forests to provide a range of ecological and social outputs in addition to timber. These outputs might include healthy riparian areas, connected blocks of late-successional forests, habitat for threatened and…
Author(s): R.J. Barbour, S.D. Tesch, J. McNeel, S.A. Willits, R.D. Fight, A. Mason, K.E. Skog
Keywords: Smallwood, Wood utilization, Silvicultural systems, Wood products, Forest ecology, Economics, Forest management, Forestry practices, Colville National Forest
Source: Role of wood production in ecosystem management : proceedings of the Sustainable Forestry Working Group at the IUFRO All Division 5 Conference, Pullman, Washington, July 1997. Madison, Wis. : USDA Forest Service, Forest Products Laboratory, 1997. General technical report FPL ; GTR-100.:p. 67-72
Year: 1997
The presentations at this symposium discussed concepts of ecosystem management and sustainability as viewed by various levels of government and private land managers. The theme was to integrate ecology, silviculture, forest operations, wood products, and economics to find ways to develop healthy…
Author(s): R. J. Barbour, K. E. Skog
Keywords: Silviculture, Wood products, Forest management, Production
Source: (General technical report FPL ; GTR-100):vi, 98 p. : ill. ; 28 cm.
Year: 1997
Discusses temporary options for crossing streams and wetland soils with forest harvesting and transportation equipment. Reviews the available literature on the environmental effects of temporary crossings. Provides an overview of regulations pertaining to temporary crossings for several…
Author(s): Charles R. Blinn, Rick Dahlman, Lola Hislop, Michael A. Thompson
Keywords: Bridges, Culverts, Forest management, Wetlands, Streams, Road construction, Environmental impact, Regulations, Temporary structures
Source: (General technical report NC ; 202):125 p. : ill. ; 28 cm.
Year: 1998
Research results from the value-added research and demonstration program for western hardwoods are summarized in this report. The intent of the program was to enhance the economy of the Pacific Northwest by helping local communities and forest industries produce wood products more efficiently.…
Author(s): D. W. Green, W. W. Von Segen, S. A. Willits
Keywords: Hardwoods, Wood utilization, Research, Wood properties, Markets, Forest management, Pacific Northwest States of USA, Oregon, Washington, Red alder
Source: (General technical report FPL ; GTR-85):43 p. : ill. ; 28 cm.
Year: 1995
The effects of climate change on forests will trigger market adaptations in forest management and in wood-products industries and may well have significant effects on forest-based outdoor recreation.
Author(s): Lloyd C. Irland, Darius Adams, Ralph Alig, Carter J. Betz, Chi-Chung Chen, Mark Hutchins, Bruce A. McCarl, Ken Skog, Brent L. Sohngen
Keywords: Climate change, Climatic factors, Socioeconomics, Forest products industries, Forest management, Forest recreation, Skiing, Carbon sequestration
Source: BioScience. Vol. 51, no. 9 (Sept. 2001).:p. 753-764.
Year: 2001
A density-dependent matrix growth model of uneven-aged loblolly pine stands was developed with data from 991 permanent plots in the southern United States. The model predicts the number of pine, soft hardwood, and hard hardwood trees in 13 diameter classes, based on equations for ingrowth,…
Author(s): C.-R. Lin, J. Buongiorno, Jeffrey P. Prestemon, K. E. Skog
Keywords: Growth models, Pinus taeda, Stand structure, Simulation, Forest management
Source: (Research paper FPL ; RP-569):13 p. : ill. ; 28 cm.
Year: 1998
SouthPro is a Microsoft Excel add-in program that simulates the management, growth, and yield of uneven-aged loblolly pine stands in the Southern United States. The built-in growth model of this program was calibrated from 991 uneven-aged plots in seven states, covering most growing conditions and…
Author(s): Benedict Schulte, Joseph Buongiorno, Ching-Rong Lin, Kenneth E. Skog
Keywords: Forest management, Computer software, Pinus taeda, Uneven-aged stands
Source: (General technical report FPL ; GTR-112):ii, 47 p. : ill. ; 28 cm.
Year: 1998
Nonlinear programming models of uneven-aged loblolly pine (Pinus taeda L.) management were developed to identify sustainable management regimes which optimize: 1) soil expectation value (SEV), 2) tree diversity, or 3) annual sawtimber yields. The models use the equations of SouthPro, a site- and…
Author(s): Benedict J. Schulte, Joseph Buongiorno, Kenneth Skog
Keywords: Pinus taeda, Forest management, Mathematical models, Growth yield relationship, Species diversity, Stand structure, Equations, Biomass production, Optimization methods, Sawnwood, Stumpage value, Nonlinear programming
Source: Proceedings of the Tenth Biennial Southern Silvicultural Research Conference : Shreveport, Louisiana, February 16-18, 1999. Asheville, N.C. : U.S. Dept. of Agriculture, Forest Service, Southern Research Station, 1999. General technical report SRS ; 30.:p. 381-387 : ill.
Year: 1999
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