基于主成分分析法的渭河陕西段水环境质量评价  

Water Quality Assessment of Weihe River in Shanxi Section Based on Principal Component Analysis

作　　者：吴勇[1] 刘有军[1] 陈伟[1] 江强[1] 

机构地区：[1]云南省建筑科学研究院,云南昆明650223

出　　处：《环境科学导刊》2013年第6期82-86,共5页Environmental Science Survey

摘　　要：主成分分析法能够在保证原始数据信息损失最小的情况下,以少数的综合变量取代原有的多维变量,使数据结构大为简化,并且客观地确定变量权数,避免了主观随意性。应用主成分分析法对渭河水环境进行质量评价,评价结果表明,渭河陕西不同地段水质状况不同。总的来讲,渭河污染十分严重。The principal component analysis could substitute a small number of comprehensive variables for the original multidimensional variables, and simplify data structure with minimizing loss of original data information. The objective weight added to the variables avoids subjective randomness. The method is used to assess the water quality of Weihe River, the results show the water quality of different sections of Weihe River in Shanxi are different. Generally said, the river is seriously polluted.

关 键 词：主成分分析法 水环境质量评价 渭河陕西段 

分 类 号：X82[环境科学与工程—环境工程]