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Effect of sediment on concentration of dissolved phosphorus in the Three Gorges Reservoir
Cao Zhijing1; Zhang Xinbao2; Ai Nanshan1
Corresponding AuthorCao, ZJ
2011
Source PublicationINTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
ISSN1001-6279
Volume26Issue:1Pages:87-95
SubtypeArticle
AbstractEutrophication 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%.
KeywordDissolved Phosphorus Sediment Load Reduction Three Gorges Reservoir Adsorption Capacity Eutrophication
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Water Resources
Indexed BySCI
WOS KeywordEUTROPHIC RESERVOIR ; PHOSPHATE EXCHANGE ; BED-SEDIMENTS ; RIVER ; SHALLOW ; LAKES ; RETENTION ; CATCHMENTS ; GRADIENTS ; CHEMISTRY
Language英语
Quartile4区
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WOS SubjectEnvironmental Sciences ; Water Resources
WOS IDWOS:000289007800008
Funding OrganizationWestern Development Action, Chinese Academy of Science(KZCX2-XB2-07-01) ; Chinese National Science & Technology Infrastructure Program(2008BAD98B04)
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5516
Collection山地表生过程与生态调控重点实验室
Affiliation1.Sichuan Univ, Inst Architecture & Environm, Chengdu 610065, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
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.
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