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Fuzzy mathematics method is used to establish the corresponding membership function in order to analyze the water quality during specific years and forecast its trend. The result shows that using fuzzy comprehensive evaluation can scientifically evaluate the water quality of Zhanghe River, obtaining the V, V, III, II levels for different years and producing the prevention measures.
In order to set up a water quality assessment system for Zhanghe river fittingly, a fuzzy comprehensive evaluation model based on fuzzy theory is studied. The application of this method to evaluate the water quality in Xida section is given as an example for demonstration. According to the environmental quality standard of surface water, the membership function is established. So as to ensure the...
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