Abstract:

In order to fend off the hail disaster effectively, the author set up a model to assess the disaster risk. The meteorological data in 7 weather stations which located in Tianshui City, crops area, agricultural population and GDP per head in every counties had been used in analyzing. The results showed that the hail occurred in April to October and concentrated in May to June. The hail occurred in northern more than the southern. The space distribution of degree of hail disaster risk was as same as hail frequency. The higher hail disaster risk was in May, July and September and lower one was in June and August. The differences of hail disaster occurrence among counties were large. It supposed that the measurement of defense hail disaster should accord the degree of hail disaster risk spatial and temporal distribution.