| Effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake |
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| 作者姓名： | 胡勤海 朱荫湄 宋静 李震宇 温军杰 |
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| 作者单位： | College of Environment and Resources，Zhejiang University，College of Environment and Resources，Zhejiang University，College of Environment and Resources，Zhejiang University，College of Environment and Resources，Zhejiang University，College of Environment and Resources，Zhejiang University Hangzhou 310029，China，Hangzhou 310029，China，Hangzhou 310029，China，Hangzhou 310029，China，Hangzhou 310029，China |
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| 基金项目： | Project (No .2 940 5 9)supportedbyNationalNaturalScienceFoundationofZhejiangProvince，China |
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| 摘 要： | INTRODUCTIONAsasinkandaninnersourceofnutrients,sedimentsplayanimportantroleinlakeeutroph ication.TheeutrophicationstatusofWestLakeisstillcriticalinrecentyearsevenaftermostpollutionsourcesaroundWestLakehavebeencontrolled(Peietal.,1998) ,mainlythroughtherel…
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Effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake |
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| HU Qin hai,ZHU Yin mei,SONG Jing LI Zhen yu,WEN Jun jieWT.,.BZ.Effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake[J].Journal of Zhejiang University Science,2003(3). |
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| Authors: | HU Qin hai ZHU Yin mei SONG Jing LI Zhen yu WEN Jun jie[WT BZ] |
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| Institution: | HU Qin hai,ZHU Yin mei,SONG Jing LI Zhen yu,WEN Jun jie[WT9.,10.BZ] |
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| Abstract: | The effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake under different conditions were investigated by simulation test. Results showed that the net flux of NH 4 N release from sediments increased with pH, but NO 3 - N showed negative going release at all tested pH levels. The net flux of NH 4 N release from sediments was higher under anaerobic or aerobic condition of the overlying water, but only under aerobic condition would net release of NO 3 - N occur. It was also shown that phosphorus released was mainly in its inorganic form, higher pH and anaerobic conditions of overlying water greatly stimulated release of phosphorus. In situ measurement at several West Lake locations indicated that sediment resuspension induced by boat propeller stimulated nutrients release from sediment into overlying water. |
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| Keywords: | West Lake Sediments Nitrogen Phosphorus |
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