中文摘要：

通过收集大量沙尘暴灾情资料,整理出我国西北地区春季沙尘暴造成的经济损失及农业损失数据,采用基于信息扩散理论的风险评估方法对因灾造成的经济和农业损失风险分别进行了分析。结果表明：①在春季沙尘暴发生日数总体减少的气候背景下,沙尘暴造成的经济和农业损失均呈现出上升的趋势。②经济损失风险高值区主要分布在阿拉善、锡林郭勒、塔里木、阿勒泰、塔城及吐鲁番地区。农业损失风险高值区主要分布在吐鲁番、阿克苏、和田、瓜州、阿拉善地区。

英文摘要：

With plenty o{ data on sand-dust storm disaster losses, the data of economic and agricultural losses caused by spring sand-dust storms in the northwestern China are processed respectively. Based on the information diffusion theory, the information diffusion method is used to analyze the risk of economic loss and agricultural loss respectively. The results show： （1） Both the economic loss and agricultural loss show an increasing trend on the climatic background of decreasing spring sand-dust storm events. （2） The risk of economic loss is higher in Alashan, Xilingole, Tarim, Altai, Tacheng, Turpan, and Turpan Basin, and the risk of agricultural loss is higher in Turpan, Aksu, Hetian, Guazhou, and Alashan.