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| Tempo-spatial Discrepancies in Phosphorus Species and Concentrations in Lake Taihu Water Influenced by Sediment Resuspension from Wind |
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| KeyWord:phosphorus; resuspension; water source site; Lake Taihu; sediment |
| Author Name | Affiliation | | ZHANG Hong-mei | College of Resource and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China | | LIU Xin | State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China | | DENG Jian-cai | State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China | | SHEN Ai-chun | Hydrology and Resources Survey Bureau, Taihu Basin Authority, Wuxi 214024, China | | CHEN Fang | Hydrology and Resources Survey Bureau, Taihu Basin Authority, Wuxi 214024, China | | XU Bin | Hydrology and Resources Survey Bureau, Taihu Basin Authority, Wuxi 214024, China | | CHEN Xiao-min | College of Resource and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China |
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| Abstract: |
| Lake Taihu is an important source of local drinking water. Release of phosphorus from the sediments has a significant impact on water quality. A Y-shape apparatus was adopted to examine the effects of resuspension-sedimentation process on phosphorus release from the sediments in Jinshu water source in Lake Taihu. Under the wind speed of 5.1 m·s-1, obvious spatial heterogeneity of total phosphorus（ＴＰ） and orthophosphate（PO3-4-P） was observed in the overlying water, and TP concentration was positively correlated with suspended solids concentration（ＳＳ）. The vertical distribution of TP in water showed higher concentrations at closer to water-sediment interface, whereas no obvious vertical difference was observed in PO3-4-P. More TP was released under wind speed of 8.7 m·s-1. These results suggested that reducing wind speed and dissipating wave might improve water quality in Lake Taihu. |
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