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An Approach to Density Measurement in Douglas-Fir

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Abstract:

Most American yield tables are based on natural stands that have always been dense or overdense. Most European yield tables are based on stands that were dense at establishment and were given the benefit of frequent thinnings starting at an early age. Neither of these patterns of stand history applies or is likely to apply for many years to most young stands in the Douglas-fir region. The author proposes an approach to density measurement applicable to stands having highly variable histories. The basic data are taken from intensively managed Douglas-fir in Denmark and Prussia and from both thinned and natural stands in the Douglas-fir region of western Washington. Some of the relationships found may apply in principle to other species growing in even-aged stands.

Document Type: Journal Article

Affiliations: Pacific Northwest Forest and Range Experiment Station, Portland, Oreg.

Publication date: 1952-07-01

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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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