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Notes: Validation of a Butt Log Volume Estimator for Douglas-fir

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Data were collected from 193 Douglas-fir butt logs to validate the Bruce equation for estimating volume of butt logs. Average bias was 0.04 cubic feet and average accuracy (mean absolute deviation) was 3.7 cubic feet. The Bruce equation is recommended for estimating volume of Douglas-fir butt logs except when the butt log extends into the live crown. Forest Sci. 31:643-646.

Keywords: Pseudotsuga menziesii; volume equations

Document Type: Miscellaneous

Affiliations: Forest Products Technologist, USDA Forest Service, Pacific Northwest Forest and Range Experiment Station, P.O. Box 3890, Portland, OR 97208

Publication date: 1985-09-01

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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