【摘要】 文章将综合指数法与主成分分析法相结合客观、科学的评价了大凌河流域水质状况,对各单项指标客观权重利用主成分法赋权并用于综合水质评价,通过对比分析其他水质评价方法验证了该方法的可行性与合理性。研究表明:大凌河流域各区段水质等级在时空分布上存在明显的差异,评价结果与流域水质实际状况基本相符;改进的水质标识法能够客观、准确的反映流域各区段在不同时间上的水质达标情况,具有较强的可操作性与科学性。更多还原

【Abstract】 This paper objectively and scientifically evaluates the water quality of Daling River basin by combining the comprehensive index method with the principal component analysis method. The objective weights of each index are weighted by the principal component method and applied to the comprehensive water quality evaluation. The feasibility and rationality of this method are verified by comparing and analyzing other water quality evaluation methods. The results show that there are obvious differences in the spatial and temporal distribution of water quality grades in each section of the Daling River Basin,and the evaluation results are basically consistent with the actual situation of water quality in the basin. The improved water quality identification method can objectively and accurately reflect the water quality standards in different sections of the basin at different times,and it has strong operability and scientificity.更多还原