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    Author(s): James S. Kagan; Janet L. Ohmann; Matthew Gregory; Claudine Tobalske
    Date: 2008
    Source: U.S. Department of the Interior, U.S. Geological Survey. Gap Analysis Bulletin 15: 15-19
    Publication Series: Scientific Journal (JRNL)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (1.46 MB)


    As part of the Northwest Gap Analysis Project, land cover maps were generated for most of eastern Washington and eastern Oregon. The maps were derived from regional SAGEMAP and SWReGAP data sets using decision tree classifiers for nonforest areas, and Gradient Nearest Neighbor imputation modeling for forests and woodlands. The maps integrate data from regional vegetation plots with satellite imagery and other geographic information system data, and provide more information than typical land cover maps. Maps also were developed for altered and disturbed land cover classes, and for cover of shrubs, annual grasses, and perennial grasses.

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    Kagan, James S.; Ohmann, Janet L.; Gregory, Matthew; Tobalske, Claudine. 2008. Land cover map for map zones 8 and 9 developed from SAGEMAP, GNN, and SWReGAP: a pilot for NWGAP. U.S. Department of the Interior, U.S. Geological Survey. Gap Analysis Bulletin 15: 15-19.


    biogeography, plant community ecology, landscape pattern, vegetation modeling, land cover, mapping

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