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Perspective In Relation to the Measurement of Standing Trees

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Abstract:

This article discusses the errors introduced by perspective in ocular estimates of tree heights and diameters. Although the 20-foot pole and girth at mid-length are not used in this country, the principles involved in ocular estimation of the number and upper diameter of 16-foot logs are the same and are therefore of interest to American foresters. The author concludes that ocular estimates are so greatly influenced by the personal factor that it is neither practicable nor worth while to systematize the fundamental sources of error due to perspective, and that the use of instruments for the measurement of height and taper is therefore highly desirable.

Document Type: Journal Article

Affiliations: British Forester

Publication date: 1943-12-01

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.

    2015 Impact Factor: 1.476
    Ranking: 22 of 66 in forestry

    Also published by SAF:
    Forest Science
    Other SAF Publications
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