FRA 2000 - Global forest cover map
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Data about the world’s forest cover is an important prerequisite for global environmental change research, from studies on biodiversity and effective conservation to modeling sustainability of forest ecosystems. Expanding on the recently completed U.S. Geological Survey (USGS) global land cover characteristics database, USGS EROS Data Center is producing a global forest cover map for the United Nations Food and Agriculture Organization (FAO). Broad, discrete forest-canopy cover categories are ma pped at 1-km resolution for use by FAO’s year 2000 Forest Resource Assessment project. Seasonal land cover classes from the USGS database are optimized and adapted to FAO definitions using combinations of remapping, clustering, and linear unmixing techniques. Preliminary forest cover maps have been produced for several continents. Results show that the basic objectives of forest cover mapping and linkage to the USGS database can be met adequately with the methodology.