Assessment of agricultural drought vulnerability, using matrix overlay

摘要

In this paper area under vulnerability of Agricultural Drought was evaluated using matrix overlay and GIS technique. The purpose of this study was to make a model of the drought vulnerability area using matrix overlay (with emphasis in Agricultural Drought). Matrix overlay function in ArcGIS developed by IRRFIB model and expert judgment. Vulnerability indicators have different severity of vulnerability classification. The Agricultural drought Vulnerability indicator maps are five indicators that arerelated to Agricultural drought. Each of the Vulnerability indicator maps and also final Vulnerability maps are classified into 4 Vulnerability classes of drought: mild, moderate, severe and very severe. Result of this paper show that the mild and moderate drought Vulnerability area cover mainly surface of the region, mild and moderate drought vulnerability covers approximately 38.3% and 38.2% of the regain. Almost the severe drought vulnerability area covers approximately 21.7% and very severe droughtvulnerability area covers approximately 1.8% of the regain.