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Butt-Log Profile Equations

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Several mathematical models were developed that describe the shape of butt logs and can be used to calculate their volumes. Three methods of developing profile equations were tested. The best method was to use the differentials of the individual terms of an unbiased volume estimator plus information about log shape to form the equation. The equation was then conditioned so that its volume estimates were compatible with the estimator. Several techniques for developing profile equations are described. Two potentially useful butt-log profile equations are derived. For. Sci. 33(1):104-115.

Keywords: Models (mathematical); mensuration; volume estimation

Document Type: Journal Article

Affiliations: Consulting Mensurationist, USDA Forest Service, Pacific Northwest Research Station, P.O. Box 3890, Portland, OR 97208

Publication date: 1987-03-01

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

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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