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17 results found
WestPro is an add-in program designed to work with Microsoft Excel to simulate the growth of uneven-aged Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in the Pacific Northwest region of the United States. Given the initial stand state, defined as the number of softwood and…
Author(s): Rebecca Ralston, Joseph Buongiorno, Benedict Schulte, Jeremy Fried
Keywords: Douglas-fir, Pseudotsuga menziesii, uneven-aged, management, economics, ecology, WestPro, simulation, software, growth model, diversity
Source: Gen. Tech. Rep. PNW-GTR-574. Portland, OR : U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 25 p
Year: 2003
CalPro is an add-in program developed to work with Microsoft Excel to simulate the growth and management of uneven-aged mixed-conifer stands in California. Its built-in growth model was calibrated from 177 uneven-aged plots on industry and other private lands. Stands are described by the number of…
Author(s): Jingjing Liang, Joseph Buongiorno, Robert A. Monserud
Keywords: Mixed conifers, uneven-aged management, economics, ecology, CalPro, simulation, software, growth model, diversity
Source: Gen. Tech. Rep. PNW-GTR-619. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 32 p
Year: 2004
WestProPlus is an add-in program developed to work with Microsoft Excel to simulate the growth and management of all-aged Douglas-fir–western hemlock (Pseudotsuga menziesii (Mirb.) Franco–Tsuga heterophylla (Raf.) Sarg.) stands in Oregon and Washington. Its built-in growth model…
Author(s): Jingjing Liang, Joseph Buongiorno, Robert A. Monserud
Keywords: WestProPlus, simulation, growth model, Douglas-fir, western hemlock, management, economics, ecology, diversity, wood quality, risk, stochastic, deterministic
Source: Gen. Tech. Rep. PNW-GTR-674. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 42 p
Year: 2006
SIMSAP and SlMTlM are computer programs that have been developed to simulate the stand growth and development of natural and treated evenaged northern hardwood stands. SIMSAP begins with species distributions by quality classes in sapling stands after regeneration. SIMTIM, the poletimber-sawtimber-…
Author(s): Dale S. Solomon, Richard A. Hosmer, Richard A. Hosmer
Keywords: growth model, Northern hardwoods, even-aged
Source: Res. Pap. NE-606. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 13 p.
Year: 1987
Growth and yield projections aid foresters in assessing timber management opportunities and in making management decisions. With these uses, questions arise about the reliability and limits of growth and yield simulators. Using long-term studies of hardwood stands in Ontario the growth simulator…
Author(s): Jacek Bankowski, Daniel C. Dey, Murray Woods, Jim Rice, Eric Boysen, Brian Batchelor, Roj Miller
Keywords: growth model, tolerant hardwood, thinning, timber class area, stand density, stand volume
Source: Forest Resaerch Information Paper. Issue 124. 1995. pp. 1-32
Year: 1995
SILVAH, a stand growth simulator commonly used in the northeastern United States, has been evaluated by comparing predicted and actual growth of tolerant hardwoods in southern Ontario. The data came from 139 stands, unmanaged or managed (thinned), even-aged or uneven-aged. The data were used to…
Author(s): Jacek Bankowski, Daniel C. Dey, Rice Jim, Eric Boysen, Roj Miller
Keywords: growth model, tolerant hardwood, thinning, timber class, basal area, stand density, stand volume
Source: Forest Research Information Paper. Issue 128. 1995. pp. 1-28
Year: 1995
The individual-tree, distance-independent stand growth simulator NE-TWIGS has been tested for Ontario's tolerant hardwood stands using data from long-term permanent sample plots. NE-TWIGS provides reliable short-term (5-year) predictions of stand basal area (modelling efficiency from 77% to 99%),…
Author(s): Jacek Bankowski, Daniel C. Dey, Eric Boysen, Murray Woods, Jim Rice
Keywords: growth model, tolerant hardwood, thinning, timber class, basal area, stand ensity, stand volume
Source: Forest Research Information Paper. Issue 130. 1996. pp. 1-21
Year: 1996
A computer subroutine, Grow, has been written in 1977 Standard FORTRAN to implement a distance-independent, individual tree growth model for Lake States' forests. Grow is a small and easy-to-use version of the growth model. All the user has to do is write a calling program to read initial…
Author(s): Gary J. Brand
Keywords: growth model, mortality, FORTRAN
Source: Research Paper NC-207. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Year: 1981
STEMS (Stand and Tree Evaluation and Modeling System) is a tree growth projection system. This paper (1) compares the performance of the current version of STEMS developed for the Lake States with that of the original model and (2) reports the results of an analysis of the current model over a…
Author(s): Margaret R. Holdaway, Gary J. Brand
Keywords: validation, testing, growth model, Lake States species, verification
Source: Research Paper NC-234. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 20 p.
Year: 1983
Describes in detail a management subsystem to simulate cutting in Lake States forest types. This subsystem is part of a Stand and Tree Evaluation and Modeling System (STEMS) contained in the Forest Resource Evaluation Program (FREP) for the Lake States. The management subsystem can be used to…
Author(s): Gary J. Brand
Keywords: silviculture guide, computer model, growth model
Source: General Technical Report NC-69. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Year: 1981
https://www.fs.usda.gov/treesearch/search/query?f%5B0%5D=publication_keywords%3Agrowth%20model