午夜欧美大片免费观看,欧美激情综合五月色丁香,亚洲日本在线视频观看,午夜精品福利在线

The influence of hail events on Tibet animal husbandry and agriculture is very serious, only next to that of frost and drought disasters. With the 30 year hail disaster data from meteorological stations over Tibetan plateau, the temporalspatial distribution characteristics of hail events are analyzed. The results show that hail events were concentrated mainly around the north and south parts of the Tibet; there was obvious seasonal variation; the diameters of hailstones were small; the duration of hail events was short; the hail damage was severer in the central Tibetan Plateau than in the agricultural region. According to the hazard index based on the size of hailstones and the duration of hail events, as well as vegetation type, the hazard regionlization of hail events in the Tibetan Plateau is conducted.