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Notes: A Class-Interval-Free Method for Obtaining Expected Yields from Diameter Distributions

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Yields per unit area can be estimated from diameter frequency predictions. Frequencies are usually predicted for arbitrarily chosen diameter class intervals. Dependence on class intervals may be eliminated by computing yield as the product of the expected volume of a single tree in a given stand times the number of trees per unit area in that stand. Examples of this class-interval-free method for obtaining yields are presented for the cases where the transformed beta and Weibull are assumed to be the population density for tree diameter at breast height. Forest Sci. 21:67-69.

Keywords: Volume; Weibull density; beta density; mathematical models

Document Type: Miscellaneous

Affiliations: Associate Professor, Division of Forestry and Wildlife Resources, Virginia Polytechnic Institute and State University, Blacksburg, 24061

Publication date: 1975-03-01

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.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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