中文摘要：

依据巴彦淖尔地区冬春季节降水少、年变率大的气候特点和易形成雪灾的量级指标进行雪灾风险区划。选取1971—2010年11月到次年3月,日降雪量大于等于3mm,并出现积雪和结冰现象为研究对象,分析了降雪量大于等于3mm的降雪日数和积雪深度大于等于5cm的积雪日数年代际变化,结合民政部门历史灾情记载、实地调查、农牧业现状以及各种基础资料数据与GIS技术,从致灾因子、脆弱性评估分析方面,在NOAA卫星遥感雪覆盖监测图像上,利用加权综合与层次分析法,构建雪灾判别模型,得出巴彦淖尔地区雪灾风险区划：雪灾最严重的地区为五原县大部、乌前旗南部和东北部部分区域、乌中旗东南和西南两区域、乌后旗的海力素附近大片区域。

英文摘要：

The snow disaster risk zoning is conducted based on the climatic characteristics of less rainfall in spring and winter,great annual change rate of precipitation in Bayannur,and frequent snowstorm disasters,targeting at the days with snowfall greater than 3 mm,along with snow cover and freeze weather from November to next March of 1971to 2010.The inter-decadal variations of the numbers of snow days with snowfall greater than 3mm,and snow depth greater than 5cm are analyzed in combination with the historical records,field surveys,agricultural and animal husbandry production,and a variety of basic information and data,as well as GIS technology.From the aspects of hazard,vulnerability assessment and analysis,by using the methods of comprehensive weighting and Analytic Hierarchy Process,the snowstorm discriminating model is build,and the snow risk zoning of Bayannur is given on the NOAA satellite snow cover monitoring image.The risk zoning of snow disasters is useful to disaster prevention and loss reduction