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United States Department of Agriculture
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Levels-of-growing-stock cooperative study on Douglas-fir: report No. 5—the Hoskins study, 1963-1975. Res. Pap. PNW-RP-257
Author(s): Alan B. Berg; John F. Bell
Date: 1979
Source: Res. Pap. PNW-RP-257. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 29 p
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
PDF: View PDF (1.76 MB)Description
Public and private agencies are cooperating in a study of eight thinning regimes in young Douglas-fir stands. Regimes differ in the amount of basal area allowed to accrue in growing stock at each successive thinning. All regimes start with a cornmon level-of-growing-stock which is established by a conditioning thinning. Thinning interval is controlled by height growth of crop trees, and a single type of thinning is prescribed. Nine study areas, each involving three completely random replications of each thinning regime and an unthinned control, have been established in western Oregon and Washington, U.S. A., and Vancouver Island, Canada. Site quality of these areas varies from I through IV. Climatic and soil characteristics for each area and data for the stand after the conditioning thinning are described briefly.Publication Notes
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Citation
Berg, Alan B.; Bell, John F. 1979. Levels-of-growing-stock cooperative study on Douglas-fir: report No. 5—the Hoskins study, 1963-1975. Res. Pap. PNW-RP-257. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 29 p.Keywords
Thinnings, stand growth, Douglas-fir, Pseudotsuga menziesiiRelated Search
- Levels-of-growing-stock cooperative study in Douglas-fir: report no. 07—Preliminary results, Stampede Creek, and some comparisons with Iron Creek and Hoskins.
- Levels-of-growing-stock cooperative study on Douglas-fir: report no. 02—The Hoskins Study, 1963-1970.
- Levels-of-growing-stock cooperative study in Douglas-fir: report no. 17—The Skykomish Study, 1961–93; The Clemons study, 1963–94.
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https://www.fs.usda.gov/treesearch/pubs/40600