【摘要】 沙尘暴天气是主要发生于干旱、半干旱乃至半湿润地区天气现象。对农业、工业、交通运输乃至人们生命财产和身体健康具有相当的危害。西北地区是沙尘暴的重灾区 ,自 5 0年代以来强和特强沙尘暴频次有增多的趋势 ;且集中出现在甘肃北部至内蒙中部、宁夏、新疆东部至甘肃北部、新疆吐鲁番盆地等地区。究其原因 ,受气候、下垫面、水源、社会等诸多因素影响。针对西北地区沙尘暴灾害的特点、分布和成因 ,作者提出了相应的防治对策更多还原

【Abstract】 Sand and dirt storm disaster is such a weather which accured in the drought, simi-drought and simi-wetness areas. It is very harmful to agriculture, industry, traffic and people’s health or life in China. Northwestern China is the heavy sand and dirt storm disaster area. In history, sand and dirt storm often occurred. Since 1950’s,the strong and supper strong sand and dirt storm increased and centralized in the region of Northern Gansu to center of Mongolia and Ningxia, Eastern Xinjiang to Northern Gansu, and The Basin of Tulufan of Xinjiang. Their existing should be the climate, surface, water,society and so on. Upon the features, distribution and origin of the sand and dirt storm disaster occurred in China, the corresponding prevention countermeasures have been raised.更多还原