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Levels-of-growing-stock cooperative study in Douglas-fir: report no. 09Some comparisons of DFSIM estimates with growth in the levels-of-growing-stock study.
Author(s): Robert O. Curtis
Date: 1987
Source: Res. Pap. PNW-RP-376. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 44 p
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
PDF: Download Publication (2.08 MB)Description
Initial stand statistics for the levels-of-growing-stock study installations were projected by the Douglas-fir stand simulation program (DFSIM) over the available periods of observation. Estimates were compared with observed volume and basal area growth, diameter change, and mortality. Overall agreement was reasonably good, although results indicate some biases and a need for revision of the upper density limit in the DFSIM program.Publication Notes
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Citation
Curtis, Robert O. 1987. Levels-of-growing-stock cooperative study in Douglas-fir: report no. 09Some comparisons of DFSIM estimates with growth in the levels-of-growing-stock study. Res. Pap. PNW-RP-376. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 44 pCited
Keywords
simulation, projections (stand), model validation, statistics (stand), growing stock (increment/yield, Douglas-fir, Pseudotsuga menziesii)Related Search
- Levels-of-growing-stock cooperative study in Douglas-fir: report no. 17The Skykomish Study, 1961–93; The Clemons study, 1963–94.
- Levels-of-growing-stock cooperative study in Douglas-fir: report no. 15—The Hoskins Study, 1963-1998.
- Levels-of-growing-stock cooperative study in Douglas-fir: report no. 12—The Iron Creek Study, 1966-89.
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https://www.fs.usda.gov/treesearch/pubs/25398