Spatial assessment of water quality using chemometrics in the Pearl River Estuary, China

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Spatial assessment of water quality using chemometrics in the Pearl River Estuary, China
	Wu, ML; Wang, YS; Dong, JD; Sun, FL; Wang, YT; Hong, YG
刊名	FRONTIERS OF EARTH SCIENCE
	2017
卷号	11 期号:1 页码:114-126
关键词	principal component analysis self-organizing map estuarine water quality the Pearl River Estuary spatial variation
通讯作者	mlwu@scsio.ac.cn
中文摘要	A cruise was commissioned in the summer of 2009 to evaluate water quality in the Pearl River Estuary (PRE). Chemometrics such as Principal Component Analysis (PCA), Cluster analysis (CA) and Self-Organizing Map (SOM) were employed to identify anthropogenic and natural influences on estuary water quality. The scores of stations in the surface layer in the first principal component (PC1) were related to NH4-N, PO4-P, NO2-N, NO3-N, TP, and Chlorophyll a while salinity, turbidity, and SiO3-Si in the second principal component (PC2). Similarly, the scores of stations in the bottom layers in PC1 were related to PO4-P, NO2-N, NO3-N, and TP, while salinity, Chlorophyll a, NH4-N, and SiO3-Si in PC2. Results of the PCA identified the spatial distribution of the surface and bottom water quality, namely the Guangzhou urban reach, Middle reach, and Lower reach of the estuary. Both cluster analysis and PCA produced the similar results. Self-organizing map delineated the Guangzhou urban reach of the Pearl River that was mainly influenced by human activities. The middle and lower reaches of the PRE were mainly influenced by the waters in the South China Sea. The information extracted by PCA, CA, and SOM would be very useful to regional agencies in developing a strategy to carry out scientific plans for resource use based on marine system functions.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/16432]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Wu, ML,Wang, YS,Dong, JD,et al. Spatial assessment of water quality using chemometrics in the Pearl River Estuary, China[J]. FRONTIERS OF EARTH SCIENCE,2017,11(1):114-126.
APA	Wu, ML,Wang, YS,Dong, JD,Sun, FL,Wang, YT,&Hong, YG.(2017).Spatial assessment of water quality using chemometrics in the Pearl River Estuary, China.FRONTIERS OF EARTH SCIENCE,11(1),114-126.
MLA	Wu, ML,et al."Spatial assessment of water quality using chemometrics in the Pearl River Estuary, China".FRONTIERS OF EARTH SCIENCE 11.1(2017):114-126.