摘要
因子分析法是主成份分析方法的推广和深化,是把原来多个变量化为少数几个综合指标的一种统计方法,使用因子分析方法可以损失较少信息,减少评价指标,针对主因子进行分析,使水质评价结果更为合理和有效。本文采用因子分析方法对博斯腾湖水质数据进行分析,识别出影响博斯腾湖水质的3个主因子。因子1以高锰酸钾指数(CODMN)、总硬度、总氮(TN)、pH值、硝酸盐(NO3-)为主,揭示了无机物的污染指标;因子2以总磷(TP)和生化需氧量(BOD)为主。揭示了有机污染指标;因子3以溶解氧(DO)为主,反映了生活类污染状况。
Factor analysis is an extent to Principal Component Analysis, and it uses several factors to represent many original factors. The research shows that the method of factor analysis can reduce the information of evaluation index, and using main factors to analyze water quality can make the result of evaluation more reasonable and available. In this research, three main factors which affect the water quality of Bosten Lake are identified. The first main factors are CODMN, total rigidity, TN, pH , and NO3^-, it shows the influence of the mineral; The second main factors are TP and BOD, which reflect the pollution index of organically; The third main factor is DO, which represents the pollution from the life.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2008年第1期79-83,共5页
Journal of Arid Land Resources and Environment
基金
国家重点基础研究项目(G1999043508)资助
关键词
水质
综合评价
因子分析
博斯腾湖
water quality
synthetic evaluation
factor analysis
Bosten Lake
