Research on analysis of drought risk factor by applying GIS (Geographic Information System: GIS) and drought risk analysis using mathematical models (Mathematical Model), then evaluate the area's arid ready.Map areas vulnerable to drought, by the application of geographic information systems with ArcGIS program to study the factors that affect the drought, agriculture in the watershed spatial beam studies major Kong trucker 3 factors include climate factors and soil resources, factors factor utilization of land by the secondary factors including 10 factors to analyze the level of risk and risk areas, arid spatial agricultural watershed. By applying principles of Analysis Hierarchy Process (AHP) in conjunction with the GIS approach to study figure 1.
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