Comparison and Development of Height Growth and Site Index urves for Douglas-Fir in the Inland Northwest

Authors: Vander Ploeg, James L.¹; Moore, James A.¹

Source: Western Journal of Applied Forestry, Volume 4, Number 3, 1 July 1989 , pp. 85-88(4)

Publisher: Society of American Foresters

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Abstract:

Stem analysis data from Douglas-fir (Pseudotsuga menziesii) collected throughout the inland Northwest were used for testing height growth and site index equations. The equations performed well in northern and central Idaho, northeast Oregon, and northeast Washington on vegetative types similar to those sampled in model development. However, if the equations were applied on drier sites outside the original geographic study area, overestimates of height growth and under-estimates of site index could result. Therefore, revised height growth and site index equations are presented for western Montana and central Washington. West. J. Appl. For. 4(3):85-88, July 1989.

Document Type: Journal article

Affiliations: 1: Department of Forest Resources, University of Idaho, Moscow ID 83843

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