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Notes: Crown Shadow Area Equations

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Silviculturists, forest micrometeorologists, and hydrologists have interest in shade cast by tree crowns because of its influence on soil surface temperatures and on air temperatures near the ground. We provide equations which describe the boundary of illumination on sunlit crowns and estimate the amount of shade cast by tree crowns when one assumes that crown shapes can be represented by paraboloids, cones, or ellipsoids. Forest Sci 30:284-290.

Keywords: Shading (seedlings); insolation; microclimatology; shade; tree crowns

Document Type: Miscellaneous

Affiliations: Silviculturist, USDA Forest Service, Pacific Northwest Forest and Range Experiment Station, Olympia, Washington 98502

Publication date: 1984-06-01

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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