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Live Crown Ratio and Stand Density in Young, Even-Aged, Red Oak Stands

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Using a measure of density designated the Crown Competition Index, it was possible to explain 40 to 50 percent of the variation in the live crown ratio of individual dominant and codominant Quercus rubra L. trees, in even-aged stands 10 to 40 years old. Crown competition index was the sum of the ratios of a numerical expression of the crown class of each competing tree to its horizotal distance from the individual sample tree. An estimate of the average live crown ratio produced with increased stand age in response to different levels of density was determined from a multiple regression relating live crown ratio to crown competition index and sample tree height.

Document Type: Journal Article

Affiliations: Associate Professor, School of Forestry, The Pennsylvania State University

Publication date: 1964-03-01

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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