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Compatible Stem Taper and Volume Ratio Equations

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Abstract:

Compatible systems of total tree cubic volume, volume ratio, and stem taper curves are developed based on four well known volume equations: the constant form factor, the combined variable, Schumacher's, and Honer's. These systems are constructed to insure that the volume obtained for a portion of the tree bole by integrating the stem taper curve will be equal to the volume for the same portion of the bole obtained using the compatible volume ratio equation. Both methods produce total tree volumes equal to that obtained from the total tree volume equation. Each system was fitted to black oak (Quercus velutina) data from New Jersey. The overall system estimation error was reduced substantially by fitting the equations simultaneously as opposed to fitting the taper equation and algebraically solving for the coefficients of the other equations. No differences in performance were noted between the four volume estimation systems on this small data set. Forest Sci. 30:977-990.

Keywords: Quercus velutina; simultaneous estimation; taper curve; volume estimation

Document Type: Journal Article

Affiliations: Assistant Professor, Department of Horticulture and Forestry, Cook College--New Jersey Agricultural Experiment Station, Rutgers University, New Brunswick, NJ 08903

Publication date: 1984-12-01

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

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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