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'Provisional' Southwest Regional Landcover Data Multi-season satellite imagery (Landsat ETM+) from 1999-2001 were used in conjunction with digital elevation model (DEM) derived datasets (e.g. elevation, landform, aspect, etc.) to model natural and semi-natural vegetation. Landcover classes are drawn from NatureServe's Ecological System concept, with 109 of the 125 total classes mapped at the system level. For the majority of classes, a decision tree classifier was used to discriminate landcover types, while a minority of classes (e.g. urban classes, sand dunes, burn scars, etc.) were mapped using other techniques. Twenty mapping areas, each characterized by similar ecological and spectral characteristics, were modeled independently of one another. These mapping... Categories: Web Site; Tags: data, data downloading (usgs), digital elevation models, landcover, mapping, All tags... satellite imagery, vegetation modeling, Fewer tags Global Land Cover Facility The Global Land Cover Facility (GLCF) provides earth science data and products to help everyone to better understand global environmental systems. In particular, the GLCF develops and distributes remotely sensed satellite data and products that explain land cover from the local to global scales. Primary data and products available at the GLCF are free to anyone via FTP. Online datasets may be accessed electronically through the Earth Science Data Interface (ESDI). The majority of users accessing GLCF datasets (certainly not all) come from the following communities: Science: geography, Earth science, ecology, climatology, conservation, education Environmental Policy: global warming, sustainable development, risk... Categories: Web Site; Tags: LANDSAT, land cover, landcover, landcover data GAP Land Cover Viewer The Gap Analysis Program (GAP) Land Cover Viewer displays data on the vegetation and land use patterns of the continental United States. The GAP Land Cover Data Version 2.2 provides detailed information on the vegetation of the United States using consistent satellite base data and classification systems. This allows data users to make conservation or land use planning decisions for the entire range of a habitat type across administrative boundaries. GAP Land Cover Data Version 2.2 combines ecological system data from previous GAP projects in the Southwest, Southeast, and Northwest United States with recently updated California data. For Alaska ,and areas of the continental United States, where ecological system-level... Categories: Data, Map, Web Site; Types: Downloadable, Map Service; Tags: Gap Analysis Program (GAP), landcover, landcover data, mapping