From June to September 2021,six monitoring sites were set up on six major rivers in Tuotuo Riv-er basin,and 23 water quality indicators were monitored and evaluated.Results showed that 10 indicators were detectable,and 13 indicators were undetected.The water quality was basically better than Class Ⅱ quali-ty standards for surface water.According to water quality monitoring data,principal component analysis and cor-relation analysis were used to establish an evaluate factor subset.Based on game theory,the indicator weights de-termined by entropy weight method and improved analytic hierarchy process were optimized and combined.The water quality was evaluated by constructing a fuzzy water quality evaluation model based on game theory combina-tion weighting,and graded by comprehensive evalua-tion index.The results showed that permanganate in-dex(IMn),five-day biochemical oxygen demand(BOD5),total phosphorus(TP)and ammonia nitro-gen(NH3-N)were the main influencing factors.From June to September 2021,the water quality of Tuotuo River basin was good,and the fuzzy compre-hensive evaluation results of the six rivers were all be-tween Class Ⅰ and Class Ⅱ quality standards for surface water.
关键词
水质/博弈理论/模糊综合评价/沱沱河流域
Key words
Water quality/Game theory/Fuzzy comprehensive evaluation/Tuotuo River basin
维普
万方数据