Abstract:

【Objective】 In order to explore new simple and practical index of plum rains intensity (IPRI ) calculating formula, the areas along the Huaihe river in Anhui Province were used as an example, and the spatio-temporal variation characteristics of plum rains intensity were analyzed. 【Method】 Based on the analysis of the basic characteristics of the plum rains spell precipitation in the regions along the Huaihe River in Anhui Province, using the eleven stations precipitation data from 1952 to 2004, and the correlation and regression analysis were made on the data of plum rains intensity index and flood. 【Result】 The spatio-temporal variations of the characteristics of plum rains were found, and the correlativity of plum rains intensity index and flood was discovered.【Conclusion】 The finding has provided a theoretical basis for the analysis, assessment and identification of flooding disasters and the development of flood-evading agriculture in the region along Huaihe River.

Key words: index of plum rains intensity, spatio-temporal change, characteristics analysis, region along Huaihe river in Anhui Province