摘要
用主成分分析的方法,找出影响废黄河2007年水质的主成分,计算各样本的主成分得分,用聚类分析的方法将样本水质分类,结合分类结果及水质综合评分对各样本水质进行评价.结果表明,主要影响废黄河2007年水质的监测变量为BOD5、TP、CODcr及NH4_n;11月份废黄河的水质最差;从监测断面看,立新瓦厂的水质好于活动坝的水质.
Through principal components analysis,we obtain the principal components which mainly affect the water quality of the Abandoned Yellow River,and calculate the score of the principal components of each samples,then with the utility of cluster analysis methods,we classify the water quality of samples.At last we evaluate water quality of each samples according to the classification results and water quality comprehensive score. Tile results demonstrate that variants BOD5,TP, CODcr and NH4Jl primarily affeact water qual- ity of the Wasted Yellow River in 2007.Water quality of November is the worst.According the monitoring ection,water quality of Li-Wa Factory is better than HuoDong Dam.
出处
《数学的实践与认识》
CSCD
北大核心
2011年第23期78-82,共5页
Mathematics in Practice and Theory
基金
淮安市科技项目(HAS07013)
关键词
多元统计分析
主成分分析
聚类分析
水质评价
multivariate statistical analysis
principal components analysis
cluster analysis
water quality evaluation
