Spatial-temporal characteristics of surface water quality in the Taihu Basin, China

CORC > 水土保持研究所 > 中国科学院水利部水土保持研究所 > 水保所知识产出(1956-2013)

	Spatial-temporal characteristics of surface water quality in the Taihu Basin, China
	Zhao Guangju ; Gao Junfeng ; Tian Peng
刊名	ENVIRONMENTAL EARTH SCIENCES
	2011
卷号	64 期号:3 页码:809-819
关键词	Surface water quality Principal component analysis Cluster analysis Fuzzy synthetic evaluation Taihu Basin
通讯作者	Zhao, GJ
英文摘要	Taihu Basin is one of the most developed and industrialized regions in China. In the last two decades, rapid development of economy as well as an increase in population has resulted in an increase of pollutants produced and discharged into rivers and lakes. Much more attention has been paid on the serious water pollution problems due to high frequency of algal blooming. The dataset, obtained during the period 2001-2002 from the Water Resources Protection Bureau of the Taihu Basin, consisted of eight physicochemical variables surveyed monthly at 22 sampling sites in the Taihu Basin, China. Principal component analysis (PCA) and cluster analysis (CA) were used to identify the characteristics of the surface water quality in the studied area. The temporal and spatial variations of water quality were also evaluated by using the fuzzy synthetic evaluation (FSE) method. PCA extracted the first two principal components (PCs), explaining 86.18% of the total variance of the raw data. Especially, PC1 (73.72%) had strong positive correlation with DO, and was negatively associated with COD(Mn), COD, BOD, NH(4)(+)-N, TP and TN. PC2 (12.46%) was characterized by pH. CA showed that most sites were highly polluted by industrial and domestic wastewater which contributed significantly to PC1. The sites located in the west of Lake Taihu were influenced by farmland runoff which may contribute to nitrogen pollution of Lake Taihu, whereas the monitoring sites in the eastern of Lake Taihu demonstrated that urban residential subsistence and domestic wastewater are the major contaminants. FSE indicates that there is no obvious variance between 2001 and 2002 among most sites. Only several sites free from point-source pollution appear to exhibit good water quality through the studied period.
收录类别	SCI
公开日期	2012-05-29
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/4680]
专题	水土保持研究所_水保所知识产出(1956-2013)
推荐引用方式 GB/T 7714	Zhao Guangju,Gao Junfeng,Tian Peng. Spatial-temporal characteristics of surface water quality in the Taihu Basin, China[J]. ENVIRONMENTAL EARTH SCIENCES,2011,64(3):809-819.
APA	Zhao Guangju,Gao Junfeng,&Tian Peng.(2011).Spatial-temporal characteristics of surface water quality in the Taihu Basin, China.ENVIRONMENTAL EARTH SCIENCES,64(3),809-819.
MLA	Zhao Guangju,et al."Spatial-temporal characteristics of surface water quality in the Taihu Basin, China".ENVIRONMENTAL EARTH SCIENCES 64.3(2011):809-819.