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Filtering by: Academic Affiliation College of Forestry Creator Ritchie, Martin W. Resource Type Research Paper Rights Statement Copyright Not Evaluated

1. Equations for predicting the 5-year height growth of six conifer species in southwest Oregon

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Abstract:: Equations for predicting individual-tree height growth per 5-year period are presented for Douglas-fir, white fir, grand fir, ponderosa pine, sugar pine, and incense-cedar growing in the mixed-conifer zone of southwest Oregon. The data used to develop the equations came from 3,648 trees sampled from 391 stands in the study area....
Resource Type:: Research Paper

2. 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

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1. Equations for predicting the 5-year height growth of six conifer species in southwest Oregon

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

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1. Equations for predicting the 5-year height growth of six conifer species in southwest Oregon

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

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