Stand Density Management: an Alternative Approach and Its Application to Douglas-fir Plantations

Authors: Drew, T. John; Flewelling, James W.

Source: Forest Science, Volume 25, Number 3, 1 September 1979 , pp. 518-532(15)

Publisher: Society of American Foresters

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Abstract:

A method of viewing stand density as it relates to volume production and tree size is developed in the form of a simple density management diagram applicable to plantations of coastal Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, on all sites. Three prominent points in stand development, crown closure, imminent competition-mortality and the maximum size-density relationship are defined in terms of tree size and stand density, and their implication for stand dynamics is discussed. A relative density index is presented as a basis for quantifying tree growth and stand yield as a function of density. The trade-off between maximizing individual tree size or stand yield is considered; this recurring dilemma for forest managers can be rationalized on the basis of the density management diagram. Forest Sci. 25:518-532.

Keywords: Pseudotsuga menziesii; management regimes; stand yield; tree size

Document Type: Journal Article

Affiliations: Forestry Biometrician (currently enrolled in a Ph D program at the University of Georgia), Western Forestry Research Center, Weyerhaeuser Company, Centralia, WA 98531

Publication date: September 1, 1979

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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