Abstract:

Based on the daily precipitation data of 18 meteorological stations in Wuling-Mountain Area from 1961 to 2008,the spatiotemporal characteristics of the stormy weather in summer have been analyzed by statistical methods including linear regression and correlation coefficient, and the spatial variation of the risk of the stormy weather in summer has been calculated as well by using information diffusion technology. The results show that the annual mean number of stormy days in the whole Wuling-Mountain Area is on the rise, with more in the east, the north and the center, and less in the west, the south and the edge. Inaddition, due to the landform and the number of stormy days, the rainfall is higher in Wuling-Mountain and its surrounding region, with the river basins of Wujiang River, Qingjiang River and Zishui River being the key regions of meteorological disaster prevention. These findings have certain guiding significance for regional development policy formulation, disaster prevention and mitigation, and ecological construction in Wuling-Mountain area.

Key words: Wuling-Mountain area, stormy weather in summer, statistical analysis, risk assessment