关键词: 科尔沁沙地, 科尔沁沙地, 行距, 密度, 休眠燕麦, 风蚀

Abstract: 【Abstract】: In order to know clearly the status and time-space distribution of lightning disaster,disaster cause and control countermeasure of country in Chongqing,this paper analysed the status and time-space distribution of lightning disaster,disaster environment and receptor of country based on the eleven-year lightning disasters data in 34 representation stations of Chongqing during 1998~2008. The preliminary conclusions is as below:①the times of lightning disasters are basically the same as it of the region thunderstorm days:the trend is one-year high and another year low or two-year high and another year low;②the lightning disaster mostly occurs in city,and the number of accident and economic loss in city is far more than that in country;③there are two density centers of lightning disaster in Chongqing:the main citys and its eastern areas,Qianjiang and Xiushan;④the casualties are main in country（92.7%）and usually occur indoors,which is far more than that occur outdoors;⑤the economic loss and amount are mainly in public facilities,electric equipments and building,these indicate that the direct lightning and lightning surge are the main ways caused disasters; ⑥in view of existing situation in country,these countermeasures are given.