Abstract：In this paper, entropy weights of eco-environmental indicators in the Yellow River Basin from 1980 to 2019 were analyzed based on system theory and information entropy theory. It is thus verified that entropy weights of all the indicators were dynamic and structure of indicator entropy weights varies within one single year. Then importance of individual indicators in the system was proved to be variable. On this basis, EDIs (Environment Development Indexes) of the Yellow River Basin from 1980 to 2019 were calculated, valuing between 56.64~76.60. Changing trend of EDIs in the Yellow River Basin was "stable-growing" before 2003, and saw significant growth in that year and continuous increase after. The results showed that through years of protection and restoration, the ecological negative feedback was exerting profound effect and the eco-environment was gradually going well.
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ZHANG Jin-liang, CHEN Kai, ZHANG Chao, GUO Peng-cheng. The change characteristics of eco-environment in the Yellow River Basin based on entropy weights. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(8): 3767-3774.
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