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; mlwu@scsio.ac.cn
2017
发表期刊FRONTIERS OF EARTH SCIENCE
卷号11期号:1页码:114-126
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.
部门归属[Wu, Meilin; Wang, Youshao; Dong, Junde; Sun, Fulin; Wang, Yutu; Hong, Yiguo] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Wang, Youshao; Sun, Fulin; Wang, Yutu] Chinese Acad Sci, Marine Biol Res Stn Daya Bay, Shenzhen 518121, Peoples R China
关键词Principal Component Analysis Self-organizing Map Estuarine Water Quality The Pearl River Estuary Spatial Variation
资助项目LTO
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16432
专题热带海洋环境国家重点实验室(LTO)
通讯作者mlwu@scsio.ac.cn
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.,...&mlwu@scsio.ac.cn.(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.
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