Progress in Estimating Trend of Normality Percentage in Second-Growth Douglas-Fir
Abstract:The evidence, obtained by direct measurement on permanent sample plots, indicates that failure to allow for change in stocking when applying yield tables may result in growth estimates grossly in error. But, contrary to common theory, trend in stocking is not always in the direction of the normal yield table standard. The rate and direction of this trend are found to be importantly related to stand age, distribution, and existing degree of stocking. A simple method for making indicated allowances when estimating growth of Douglas-fir stands is illustrated.
Document Type: Journal Article
Affiliations: Lecturer in Forest Management, University of California, Berkeley, Calif., Pacific Northwest Forest and Range Experiment Station
Publication date: 1942-10-01
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