The influence of topography and land use on water quality of Xiangxi River in Three Gorges Reservoir region
文献类型：期刊论文
| 作者 | Ye, Lin; Cai, Qing-hua; Liu, Rui-qiu; Cao, Ming |
| 刊名 | ENVIRONMENTAL GEOLOGY
 |
| 出版日期 | 2009-09-01 |
| 卷号 | 58期号:5页码:937-942 |
| 关键词 | Land use Redundancy analysis (RDA) Self-organizing map (SOM) Topography Water quality |
| ISSN号 | 0943-0105 |
| 通讯作者 | Cai, QH, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Chinese Ecosyst Res Network,Res Ctr Aquat Ecosyst, Wuhan 430072, Peoples R China |
| 中文摘要 | A self-organizing map (SOM) was used to cluster the water quality data of Xiangxi River in the Three Gorges Reservoir region. The results showed that 81 sampling sites could be divided into several groups representing different land use types. The forest dominated region had low concentrations of most nutrient variables except COD, whereas the agricultural region had high concentrations of NO3N, TN, Alkalinity, and Hardness. The sites downstream of an urban area were high in NH3N, NO2N, PO4P and TP. Redundancy analysis was used to identify the individual effects of topography and land use on river water quality. The results revealed that the watershed factors accounted for 61.7% variations of water quality in the Xiangxi River. Specifically, topographical characteristics explained 26.0% variations of water quality, land use explained 10.2%, and topography and land use together explained 25.5%. More than 50% of the variation in most water quality variables was explained by watershed characteristics. However, water quality variables which are strongly influenced by urban and industrial point source pollution (NH3N, NO2N, PO4P and TP) were not as well correlated with watershed characteristics. |
| 英文摘要 | A self-organizing map (SOM) was used to cluster the water quality data of Xiangxi River in the Three Gorges Reservoir region. The results showed that 81 sampling sites could be divided into several groups representing different land use types. The forest dominated region had low concentrations of most nutrient variables except COD, whereas the agricultural region had high concentrations of NO3N, TN, Alkalinity, and Hardness. The sites downstream of an urban area were high in NH3N, NO2N, PO4P and TP. Redundancy analysis was used to identify the individual effects of topography and land use on river water quality. The results revealed that the watershed factors accounted for 61.7% variations of water quality in the Xiangxi River. Specifically, topographical characteristics explained 26.0% variations of water quality, land use explained 10.2%, and topography and land use together explained 25.5%. More than 50% of the variation in most water quality variables was explained by watershed characteristics. However, water quality variables which are strongly influenced by urban and industrial point source pollution (NH3N, NO2N, PO4P and TP) were not as well correlated with watershed characteristics. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 学科主题 | Environmental Sciences; Geosciences, Multidisciplinary; Water Resources |
| 类目[WOS] | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 关键词[WOS] | STREAM ECOSYSTEMS ; EUTROPHICATION ; DYNAMICS ; BLOOM ; BAY |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [30330140, 40671197]; Key Project of Knowledge Innovation Program [KZCX2-YW-427]; |
| 语种 | 英语 |
| WOS记录号 | WOS:000269014000003 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/7612]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Chinese Ecosyst Res Network,Res Ctr Aquat Ecosyst, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, Lin,Cai, Qing-hua,Liu, Rui-qiu,et al. The influence of topography and land use on water quality of Xiangxi River in Three Gorges Reservoir region[J]. ENVIRONMENTAL GEOLOGY,2009,58(5):937-942. |
| APA | Ye, Lin,Cai, Qing-hua,Liu, Rui-qiu,&Cao, Ming.(2009).The influence of topography and land use on water quality of Xiangxi River in Three Gorges Reservoir region.ENVIRONMENTAL GEOLOGY,58(5),937-942. |
| MLA | Ye, Lin,et al."The influence of topography and land use on water quality of Xiangxi River in Three Gorges Reservoir region".ENVIRONMENTAL GEOLOGY 58.5(2009):937-942. |
入库方式： OAI收割
来源：水生生物研究所
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