摘要
通过SPSS13.0软件,利用主成分分析法有效地分析鄱阳湖水质的时空变化特征,结果表明:①鄱阳湖星子断面在1991—2006年时间跨度上水质不断下降,这一定程度上反映了鄱阳湖的污染程度在不断加重;②2008年鄱阳湖水质空间分布上表现为湖内水质好于入湖区域水质,说明五河带来的污染物对鄱阳湖周边地区水质影响较大,鄱阳湖主要受外源污染而非内源污染。
Temporal and spatial variation characteristic of water quality in Poyang Lake was effectively analyzed by using principal component analysis and software SPSS13.0.The results showed that：①water quality of Xingzi had been declined from 1991 to 2006,which reflected the level of Poyang Lake＇s pollution was constantly increased at a certain extent;②in 2008,water quality spatial distribution characteristic of Poyang Lake was that： water in lake was better than lakefront.This showed water quality of the Poyang lakefront was mainly influenced by pollution from the five rivers and Poyang Lake was mainly affected by external rather than internal sources of pollution.
出处
《南昌大学学报（工科版）》
CAS
2010年第2期113-117,共5页
Journal of Nanchang University(Engineering & Technology)
基金
"十一五"国家科技支撑计划资助项目(2007BAB23C02)
关键词
主成分分析
水质
评价
鄱阳湖
principle component analysis
water quality
evaluation
Poyang Lake
