Estimating Tree Heights from Shadows on Vertical Aerial Photographs

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The use of aerial photography in forestry is increasing by leaps and bounds. As in any new and expanding field, there are many challenging problems to be solved. There is a need for methods and techniques that are practical and easy to use. In this article the author attacks one of these problems; he offers a short-cut method of estimating the height of trees by measuring the shadows on aerial photographs. Information that can be obtained this way is frequently useful to foresters in estimating forest conditions before making ground surveys.

Document Type: Journal Article

Affiliations: Conservationist, Northeastern Forest Experiment Station, Upper Darby, Pa.

Publication date: March 1, 1949

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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