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    Author(s): John W. CoulstonKurt H. Riitters
    Date: 2003
    Source: Environmental Management 31(6): 764-773
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (521 KB)

    Description

    Forest health analysts seek to define the location, extent, and magnitude of changes in forest ecosystems, to explain the observed changes when possible, and to draw attention to the unexplained changes for further investigation. The data come from a variety of sources including satellite images, field plot measurements, and low-altitude aerial surveys. Indicators estimated from the data are assessed in a variety of ways. For example, national assessments typically aggregate information across sites within states, biophysically defined regions (ecoregions), or other large strata. The strata that are characterized by extreme average indicator values become candidates for further investigation.

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Coulston, John W.; Riitters, Kurt H. 2003. Geographic analysis of forest health indicators using spatial scan statistics. Environmental Management 31(6): 764-773

    Keywords

    Monitoring, spatial analysis, spatial clusters, forest fragmentation, forest insect, forest disease, hotspots

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