长江水质的综合评价问题  

Comprehensive Evaluation of Water Quality of the Yangtze River

作　　者：江婷[1] 黄在堂[1] 许成锋[2] 

机构地区：[1]广西师范学院数学与统计科学学院,广西南宁530023 [2]九江学院理学院,江西九江332005

出　　处：《广西师范学院学报（自然科学版）》2015年第3期31-37,共7页Journal of Guangxi Teachers Education University(Natural Science Edition)

摘　　要：运用主成分分析法综合评价长江2003-2005年的水质情况.首先,通过主成分分析法把原评价长江水质的四个指标转化为少数几个具有代表性的综合变量;其次,合理简化给出的多元数据,提取对处理问题有效的信息;最后,用这些信息分析各地区水质的污染状况,并对长江水质做出定量的综合评价.所得结果显示出了所用方法的优越性和合理性,从而能较客观地对长江水质进行了综合评价.In this paper,we have evaluated the water quality of the Yangtze River from the year2003 to 2005by using principal component analysis method.Firstly,we choose a few important new variables by using principal component analysis method which includes four evaluation indices of water quality of the Yangtze River.Secondly,based on the data collation and analysis,we extract useful information to solve the problem.Finally,we make use of the information to make quantitative comprehensive evaluation of the water quality and analyze the pollution status of water quality in the region.The results show that our methods are advantageous and rational,which objectively evaluates the water quality of the Yangtze River.

关 键 词：综合评价 主成分分析 长江水质 

分 类 号：X824[环境科学与工程—环境工程]