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Filtering by: Subject Trees -- Oregon%2C Southwest -- Growth Decade 1980-1989

Equations for predicting height to crown base for fourteen tree species in southwest Oregon

Creator:

Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory

Abstract:

Equations are presented for predicting height to crown base (or bole ratio) for fourteen species of trees common to the mixed-conifer zone of southwest Oregon. Nonlinear regression was used to fit a weighted logistic function for each species. The independent variables include height, crown competition factor in larger trees, stand...

Resource Type:

Research Paper

Full Text:

. Dominant height growth and site index equations for Douglas-fir and ponderosa pine in southwest Oregon