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15 results found
Patterns of development of mean annual increment in relation to age predicted by the widely used DFSIM, SPS, TASS, and ORGANON simulators were examined. Although predictions differ considerably among simulators for portions of the range of sites, ages, and treatments, comparisons indicated that (1…
Author(s): Robert O. Curtis
Keywords: Growth and yield, mean annual increment, rotation, growth models, Douglas-fir, Pseudotsuga
Source: Res. Pap. PNW-RP-471. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 27 p
Year: 1994
Describes how dynamic programming can be used to solve optimal stand density problems when yields are given by prior simulation or by a new stand growth equation that is a function of the decision variable. Formulations of the latter type allow use of a calculus-based search procedure; they…
Author(s): Chung M. Chen, Dietmar W. Rose, Rolfe A. Leary
Keywords: optimal stand density, dynamic programming, growth models
Source: General Technical Report NC-56. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Year: 1980
Describes RPGrow$, a stand-level, interactive spreadsheet for projecting growth and yield and estimating financial returns of red pine plantations in the Lake States. This spreadsheet is based on published growth models for red pine. Financial analyses are based on discounted cash flow methods.
Author(s): Carol A. Hyldahl, Gerald H. Grossman
Keywords: red pine, growth models, financial analyses, discounted cash flows, spreadsheet
Source: General Technical Report NC-156. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Year: 1993
Documents progress in developing the techniques required for full implementation of the national Forest Inventory and Analysis program's new annual forest inventory system.
Author(s): Ronald E. McRoberts, Gregory A. Reams, Paul C. Van Deusen
Keywords: annual forest inventory, interpenetrating sample, remote sensing, growth models, imputation, 1998 Farm Bill
Source: General Technical Report NC-213. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Year: 2000
Describes research designed to detect subtle regional tree growth trends related to sulfate (SO4) deposition in the Lake States. Correlation methods were used to analyze climatic and SO4 deposition. Effects of SO4 deposition are greater on climatically stressed trees, especially pine species on…
Author(s): Margaret R. Holdaway
Keywords: forest decline, growth models, sulfate deposition, environmental influences
Source: Research Paper NC-294. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Year: 1990
Yield tables generated by the stand simulation program DFSIM (Douglas-Fir SIMulator) are presented for a number of possible management regimes. These include a “normal” yield table; tables for stands planted or precommercially thinned to 300 and 400 trees per acre; tables for commercially thinned…
Author(s): Robert O. Curtis, Gary W. Clendenen, Donald L. Reukema, Donald J. DeMars
Keywords: Yield tables, simulation, growth models, fertilization (forest), thinning effects, Doug las-fir (coast), Pseudotsuga rnenziesii
Source: Gen. Tech. Rep. PNW-GTR-135. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 182 p
Year: 1982
From data for 114 thinning and fertilizing trials in forests of southwestern Oregon and northern California with 5 or more years of observation, we produced equations to estimate gross cubic volume growth of 10- to 70-year-old Douglas-fir stands. These equations use stand escriptors (breast-height…
Author(s): R.E. Miller, G.W. Clendenen, D. Bruce
Keywords: Pseudotsuga menziesii, forest fertilization, thinning, silviculture, stand density, growth models
Source: Gen. Tech. Rep. PNW-GTR-221. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 38 p
Year: 1987
Users of the Stand Prognosis Model may have difficulties in selecting the proper set of multipliers to simulate a desired effect or in determining the appropriate value to assign to selected multipliers. A series of examples describe impact of multipliers on simulated stand development. Guidelines…
Author(s): David A. Hamilton
Keywords: stand development, growth models, silviculture, simulation models
Source: Gen. Tech. Rep. INT-GTR-310. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station. 9 p.
Year: 1994
Fort Bragg, North Carolina includes over 65,000 acres of longleaf pine forest, which is primary habitat for the endangered red-cockaded woodpecker (RCW). Effective management of the RCW depends on effective management of the longleaf pine forest. However, growth and yield models available in the…
Author(s): J. D. Shaw, G. Vacchiano, R. J. DeRose, A. Brough, A. Kusbach, J. N. Long
Keywords: FVS, simulation, growth models, longleaf pine, model validation
Source: In: Society of American Foresters 2006 National Convention [electronic resource]: Pittsburgh, Pennsylvania, October 25-29. Bethesda, MD: Society of American Foresters, 2006: 10 p.
Year: 2006
Methods were developed to calculate genetic-gain multipliers for use in individual-tree models that predict periodic height and diameter growth of coast Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) in the Pacific Northwest. Genetic-gain multipliers are used in growth models that are…
Author(s): Peter Gould, David Marshall, Greg Johnson
Keywords: tree improvement, growth models, progeny tests, Pacific Northwest
Source: Forest Science
Year: 2008
https://www.fs.usda.gov/treesearch/search/query?f%5B0%5D=publication_keywords%3Agrowth%20models