ABSTRACT
A Geographic Information System (GIS) is a set of tools for capturing, storing, manipulating, analyzing, and displaying spatially-referenced information. A GIS has become an effective and efficient technology for scientists, managers and other decision-makers to address multi-disciplinary and complex environmental monitoring and management programs. Soil degradation attribute data in a GIS consist of discrete observations or measured parameters recorded while digitizing maps or estimated from the combination of other spatial parameters contained in an existing data base. Soil maps from which GIS data can be derived are prepared manually from county soil survey reports. Soil degradation data may consist of discrete observations or measured parameters derived from digitizing soil maps.
