Estimates of site index and height growth for Douglas-fir in high-elevation forests of the Oregon-Washington Cascade Range: curves and tables for field application.

Donald J. DeMars; Francis R. Herman

doi:10.2737/PNW-RP-378

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Estimates of site index and height growth for Douglas-fir in high-elevation forests of the Oregon-Washington Cascade Range: curves and tables for field application.

Informally Refereed

Authors:

Donald J. DeMars, Francis R. Herman

Year:

1987

Type:

Research Paper

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RP-378

Source:

Res. Pap. PNW-RP-378. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 16 p

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Abstract

Estimation equations for height growth and site index were derived from stem-analysis data of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco var. menziesii) in the highelevation forests of the Cascade Range in Oregon and Washington. Two sets of height-growth and site-index estimation curves and tables produced from previously published equations are presented-one set with U.S. customary units of measure and another set with metric units. These curves and tables were designed for use in the field by forest managers.

Keywords

Site index, increment (height), stem analysis, stand age, altitude (site, Douglas-fir (coast), Oregon (Cascade Range), Washington (Cascade Range)

Citation

DeMars, Donald J.; Herman, Francis R. 1987. Estimates of site index and height growth for Douglas-fir in high-elevation forests of the Oregon-Washington Cascade Range: curves and tables for field application. Res. Pap. PNW-RP-378. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 16 p