Document Type: Original Article

Authors

1 M.Sc. Graduate, Dept. of Natural Resource. University of Sari, Iran

2 Borujerd Branch, Islamic Azad University, Borujerd, Iran

Abstract

The Standardized Precipitation Index (SPI) has become a popular measure of drought across the globe. In this study, Standardized Precipitation Index (SPI) was used in annual period of time to survey on drought. Also, in order to zonation frequency of drought, geographic information system (GIS) software and Kriging method used for extracting dry areas. The zoning maps show most severe drought is in eastern areas of the province

Keywords

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