Graded entropy weight method-based method for discriminating flood season after midstream of Yangtze River

Abstract

The invention provides a Yangtze River midstream post-flood season judgment method based on a hierarchical entropy weight method, which couples normalization processing, entropy calculation, deviation analysis and entropy weight determination processes, constructs a comprehensive index calculation formula, and performs flood season staging calculation on a comprehensive index process line by using a fuzzy analysis method so as to determine the starting time of a post-flood season. The method is simple and objective in calculation process and easy to implement, and is suitable for flood management and water resource scheduling of the midstream drainage basin of the Yangtze River and other similar large drainage basins. Through case analysis, the method can effectively discriminate the starting time of the flood season after the midstream of the Yangtze River, and provides accurate time nodes for reservoir scheduling and flood control decision, thereby improving the water resource utilization efficiency and flood control safety. The method not only improves the scientificity of post-flood season identification, but also has good universality and popularization value.

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