According to the survey data of meteorological disasters in the counties and the ground meteorological observation data of Xing'an League,a disaster risk index assessment model based on Arc GIS 10.3 was established taking hazard factors,hazard inducing environment,hazard-bearing body and disaster prevention and reduction capability into account.According to the degree of influence of each assessment factor,the risk coefficients of three meteorological disasters,drought,sand wind and frost were calculated,and risk zoning was conducted for various meteorological disasters.The results showed that among the major meteorological disasters in Xing'an League,drought had the highest risk degree,followed by frost,and sand wind had the lowest risk degree.In Xing'an League,the areas with high drought risk are mostly located in Aershan City and in the northwest of Horqin Right Wing Front Banner;the high-risk areas of sand wind are located in the north of Jalaid Banner,in the northwest and southeast of Tuquan County,and in the central and southeastern parts of the Horqin Right Wing Middle Banner;and the eastern part of Ulanhot,the southeastern part of Jalaid Banner,the southeastern part of Horqin Right Wing Middle Banner and the central part of Horqin Right Wing Front Banner are highly threatened by frost.The analysis results can provide some reference for disaster prevention and reduction and meteorological decision making in the local areas.
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