变化环境下黄河流域河流健康诊断研究

Subjects: Hydraulic Engineering >> Basic Disciplines of Hydraulic Engineering submitted time 2021-01-26

张金良 金鑫 赵梦龙 罗秋实 鲁俊

Abstract： The Yellow River is the mother river of Chinese nation. In recent years, the inflow and sediment of the Yellow River have decreased, with extreme climate events occurred frequently, the boundary conditions have changed greatly. As the rapid economic and social development, it is necessary to carry out river health diagnosis under the changing environment. This research adopted information entropy and entropy weight methods to study the evolution characteristics of the healthy development of the Yellow River basin. Results showed that: (1) The river system presented healthy in 1980~1986, unhealthy in 1987~1999 and sub-healthy in 2000~2019. (2) The river system showed a healthier trend within 1980~1984, an increasingly unhealthy trend in 1984~1996, while following a good development trend in 1996~2019. (3) The flood discharge capacity of the main channel of the Ningxia-Inner Mongolia reach and the total amount of erosion and deposition in the downstream are the most sensitive factors.

Peer Review Status:Awaiting Review

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