Land Cover Trends
Land Cover Trends is a national project that describes for specific geographic areas within the conterminous United States the rates, causes, and consequences of land use and land cover change for the period 1972 to 2000. The project relies on sampling through both time and space (geographic area). The geographic areas being studied are the Environmental Protection Agency's (EPA) Level III Ecoregions of the United States. Five time intervals-1973, 1980, 1986, 1992, and 2000-were selected for evaluation using manual interpretation of Landsat Multispectral Scanner, Thematic Mapper, and Thematic Mapper Plus imagery to map change. These time intervals were evaluated using a modified 11-class Anderson system for image interpretation. Once mapping is completed for an ecoregion, land cover change statistics are generated and a full descriptive change matrix is produced.
Alternative Scenario Developments on the US-Mexico Border
Other Current Climate and Land Use Change Projects
Effects of Climate Change, Glacial Retreat, and Loss of Snowfield on Habitat Conditions and Wild Sheep Populations in Polar and High Mountain Ecosystems in Alaska, Far Eastern Russia, and Central Asia: A Comparative Study