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为了对巢湖各出入湖口水质进行评价并分析污染变化趋势,根据2000~2007年巢湖9个主要出入湖口的8种污染指标监测结果,运用模糊综合评价方法评价了水质现状,并采用Spearman秩相关系数法分析了各出入湖口的水质变化趋势。结果表明,巢湖各出入湖口总体水质污染程度呈逐年减轻趋势,但污染均较为严重;十五里河希望桥处污染程度最高,各年污染综合指数均高于其他监测点。工业污水、生活废水等大量排放而导致的富营养化是引起巢湖污染的主要原因。
In order to evaluate the water quality of each lake in Chaohu Lake and analyze the trend of pollution change, according to the monitoring results of 8 kinds of pollution indicators in nine main entrances and exits of Chaohu Lake from 2000 to 2007, the water quality status was evaluated by fuzzy comprehensive evaluation method and the Spearman rank Correlation coefficient method analyzes the change of water quality at each entrance to the lake. The results show that the overall water quality of the lake entrances and exits is gradually decreasing trend, but the pollution is more serious; Shiwulihe hopefully the highest degree of pollution at the bridge, the comprehensive index of pollution in each year are higher than the other monitoring points. The eutrophication caused by the massive discharge of industrial wastewater and domestic wastewater is the main reason causing Chaohu Lake pollution.