关键词: 洪涝治理分区; 主成分分析; 模糊聚类分析; 淮北平原区;

Abstract: In order to reveal the regional differences of flood disasters in the Huaibei Plain and formulate disaster prevention and mitigation measures according to local conditions, we conduct area division for flood disasters control.The division method is based on coupling of principal component analysis and fuzzy clustering analysis, selecting factors from the aspect of meteorology, underlying surface and human activities.The results show that the spatial distribution characteristics of flood-related factors are obvious in the Huaibei Plain.According to the characteristics, the whole plain can be divided into 5 subregions, area-Ⅰis located in the northeast of Huaibei Plain, where is a flood-prone areas, and the self-drainage capability should be improved in this area; area-Ⅱ is located in northeast of central area, where self-drainage and pumping capacity should be improved at the same time; area-Ⅲ is located in southwest of central area, where self-drainage capacity in some local key areas should be enhanced; area-Ⅳ is located in southwest, where pumping capacity in local key areas should be improved; area-Ⅴ is located along the Huaihe River region, where the drainage standards of key regions should be improved appropriately by means of pumping, while the impact of raising drainage capacity on the flood in the mainstream of Huaihe River should be fully considered.The results of division can objectively reflect the spatial combination characteristics of each factor.And the selection of index and zoning method used in the study can provide a theoretical basis for the establishment of regional flood defense policies.

Key words: flood defense division; principal component analysis; fuzzy clustering analysis; Huaibei Plain;