Progress in Estimating Trend of Normality Percentage in Second-Growth Douglas-Fir

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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: October 1, 1942

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  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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