Effect of sediment on concentration of dissolved phosphorus in the Three Gorges Reservoir
文献类型:期刊论文
作者 | Cao Zhijing1; Zhang Xinbao2; Ai Nanshan1 |
刊名 | INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH |
出版日期 | 2011-03-01 |
卷号 | 26期号:1页码:87-95 |
ISSN号 | 1001-6279 |
关键词 | Dissolved phosphorus Sediment load reduction Three Gorges Reservoir Adsorption capacity Eutrophication |
通讯作者 | Cao, ZJ |
英文摘要 | Eutrophication and algal bloom has been occurring in the Three Gorges Reservoir ever since the reservoir's impoundment in 2003. The concentration of dissolved phosphorus (DP) is one of the main controlling factors for algal bloom. Fine sediment adsorbs DP thereby affecting the concentration of DP. The effect of the sediment reduction on the DP concentration of the Three Gorges Reservoir is discussed in this paper. Samples were taken from the Yangtze River and its tributaries, i.e. the Minjiang River and the Tuojiang River. The DP concentration of the water samples and the available phosphorus, total phosphorus, and phosphorus-fixing capacity of the sediment samples were analyzed. The amount of phosphorus adsorbed by the sediment was about 3% of the total DP load in the Yangtze River. An experiment was done in the lab simulating the DP concentration, sediment concentration, and turbulence. The results showed that quite a high amount of DP was adsorbed by the sediment. The adsorption capacity of the sediment was 135 mg/kg and the highest rate of adsorption was 29 mg/kg.h. The Xiluodu Dam is located at nearly 1,100 km upstream of the Three Gorges Dam. The Xiloudu Dam will trap sediment and thence reduce the sediment load entering the Three Gorges Reservoir after impoundment in 2013. It is estimated that the sediment reduction due to the Xiluodu Dam may result in an increase of the DP concentration in the Three Gorges Reservoir by 6.8%. |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
类目[WOS] | Environmental Sciences ; Water Resources |
研究领域[WOS] | Environmental Sciences & Ecology ; Water Resources |
关键词[WOS] | EUTROPHIC RESERVOIR ; PHOSPHATE EXCHANGE ; BED-SEDIMENTS ; RIVER ; SHALLOW ; LAKES ; RETENTION ; CATCHMENTS ; GRADIENTS ; CHEMISTRY |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000289007800008 |
公开日期 | 2013-06-25 |
源URL | [http://ir.imde.ac.cn/handle/131551/5516] |
专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
作者单位 | 1.Sichuan Univ, Inst Architecture & Environm, Chengdu 610065, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
推荐引用方式 GB/T 7714 | Cao Zhijing,Zhang Xinbao,Ai Nanshan. Effect of sediment on concentration of dissolved phosphorus in the Three Gorges Reservoir[J]. INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,2011,26(1):87-95. |
APA | Cao Zhijing,Zhang Xinbao,&Ai Nanshan.(2011).Effect of sediment on concentration of dissolved phosphorus in the Three Gorges Reservoir.INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,26(1),87-95. |
MLA | Cao Zhijing,et al."Effect of sediment on concentration of dissolved phosphorus in the Three Gorges Reservoir".INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH 26.1(2011):87-95. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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