Title:

Douglas-fir levels of growing stock study (LOGS) data from the Pacific Northwest

Author(s):

Harrington, Constance A.

Publication Year:

2018

How to Cite:

These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:

Harrington, Constance. 2018. Douglas-fir levels of growing stock study (LOGS) data from the Pacific Northwest. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2018-0055

Abstract:

A regional cooperative study, known as the Douglas-fir levels of growing stock study (LOGS), began in 1961 in Oregon, Washington, and British Columbia with a total of nine study areas. The program objective was to determine the relationships between volume growth, basal area growth, and diameter growth, to growing stock levels for a standard set of eight thinning regimes in Douglas-fir stands 20-40 feet tall and continued through 60 feet of height growth. This data publication contains the 1961-2006 data for the three study areas maintained by the USDA Forest Service, Pacific Northwest Research Station: Iron Creek, Rocky Brook, and Stampede Creek. Tree measurement data from all planned measurements are included plus some additional measurements beyond the planned measurement schedule. Data include, but are not limited to, tree height, diameter at breast height, height of the live crown from the ground, crown class, damage codes, and species.

Keywords:

farming; Natural Resource Management & Use; Forest management; thinning trial; calibration thinning; repeated thinning; tree growth; stand growth; tree height; tree diameter; wood production; tree size development; silviculture; Douglas-fir; Pseudotsuga menseizii; regional cooperative; crown class; mixed-conifer zone; Douglas-fir type; Olympic National Forest; Hood Canal Ranger District (formerly Quilcene Ranger District); Olympic Peninsula; southern Washington Cascades; Gifford Pinchot National Forest; Cowlitz Valley Ranger District (formerly Randle Ranger District); Umpqua National Forest; Tiller Ranger District; southwest Oregon; Oregon; Washington

Related publications:

• Williamson, Richard L.; Staebler, George R. 1965. A cooperative levels-of-growing-stock study in Douglas-fir. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 12 p.
• Williamson, Richard L.; Staebler, George R. 1971. Levels-of-growing-stock cooperative study on Douglas-fir: report no. 1 - description of study and existing study areas. Research Paper. PNW-RP-111. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 12 p. https://www.fs.fed.us/pnw/olympia/silv/publications/opt/125_WilliamsonStaebler1971a.pdf
• Williamson, Richard L. 1976. Levels-of-growing-stock cooperative study in Douglas-fir: report no. 4 - Rocky Brook, Stampede Creek, and Iron Creek. Research Paper. PNW-RP-210. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 39 p. https://www.fs.fed.us/pnw/olympia/silv/publications/opt/160_Williamson1976.pdf
• More (11 total)

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