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Sampling and Estimation of Conifer Mortality Using Large-Scale Color Aerial Photography

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Abstract:

Methods are described for sampling and estimating mortality rates using strips of large-scale color aerial photography as the primary sampling unit. The methods have been designed to be used in situations where steep terrain and the lack of a radar altimeter make it very difficult to determine exact scale of each strip of photography. The relationship between the cumulative distribution of crown areas and the cumulative basal area distribution is used to distribute mortality rates to dbh classes. A mortality inventory of the Clearwater National Forest is discussed as an example. Forest Sci. 30:333-342.

Keywords: Mortality sampling; aerial photography (70 mm); mortality rate

Document Type: Journal Article

Affiliations: Research Forester, Intermountain Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, Ogden, Utah 84401

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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