Surface water quality and its control in a river with intensive human impacts-a case study of the Xiangjiang River, China
文献类型：SCI/SSCI论文
| 作者 | Zhang Z. |
| 发表日期 | 2010 |
| 关键词 | Cluster analysis Principal component analysis Nutrient pollutants Heavy metal Organic pollutants Xiangjiang river multivariate statistical techniques cluster-analysis evolution region spain basin |
| 英文摘要 | Surface water quality and its natural and anthropogenic controls in the Xiangjiang River were investigated using multivariate statistical approaches and a comprehensive observation dataset collected from 2004 to 2008. Cluster analysis (CA) grouped the 15 different sampling stations into five clusters with similar hydrochemistry characteristics and pollution levels. Four principal components (PCs), nutrients, heavy metals, natural components, and organic components, were extracted from the entire dataset. Comparison of the different regional characteristics of these four PCs revealed a decreasing trend for heavy metals and an increasing trend for organic factor on an annual scale, and the seasonal trend was only observed for natural factor. We also conducted analysis of variance (ANOVA) in combination with principal component analysis (PCA) to quantify the relative contribution of spatial and temporal variations to each of the four PCs. The results revealed that 62% of the contributions from the spatial sites were responsible for variations in heavy metals, while 83% of the contributions from the sampling time were responsible for natural variations observed. However, no significant spatial or temporal contributions were found to be responsible for the nutrient and organic variations. Finally, some suggestions regarding water management were put forward based on the current status and future trends of surface water quality in the Xiangjiang River. (C) 2010 Elsevier Ltd. All rights reserved. |
| 出处 | Journal of Environmental Management |
| 卷 | 91 |
| 期 | 12 |
| 页 | 2483-2490 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0301-4797 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22304]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhang Z.. Surface water quality and its control in a river with intensive human impacts-a case study of the Xiangjiang River, China. 2010. |
入库方式： OAI收割
来源：地理科学与资源研究所
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