Abstract
The effects of pH andEh 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 NH4 +-N release from sediments increased with pH, but NO3 −-N showed negative-going release at all tested pH levels. The net flux of NH4 +-N release from sediments was higher under anaerobic or aerobic condition of the overlying water, but only under aerobic condition would net release of NO3 −-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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References
Chemistry Commission of Soil Science Society of China (CCSSSC), 1993. The Methods of Soil Analysis. Science Press, Beijing (in Chinese).
Eckert, W., Nishri, A. and Parparova, R., 1997. Factors regulating the flux of phosphate at the sediment-water interface of a subtropical calcareous lake: A simulation study with intact sediment cores.Wat. Air. Soil Pollut, (99): 401–409.
Fan, C. X., 1995. The physical and chemical features of Lake Ge sediments and release stimulation of phosphorus.J. Lake Science,7(4): 341–349 (in Chinese).
Li, Z. Y. and Zhu, Y. M., 1999. Characteristics of organic substance in West Lake sediments.Report of the Suwa Hydrobiological Station, (11): 79–82.
Moore, Jr., Reddy, K. R. and Fisher, M. M., 1998. Phosphorus flux between sediment and overlying water in Lake Okeechobee, Florida.J. Environ. Qual., (27): 1428–1439.
Pei, H. P., Wang, W. W. and He, J. G., 1998. The model of phosphorus cycling in eco-system after drawing water to West Lake of Hangzhou.J. Ecology,9(6): 648–653 (in Chinese).
Tang, M. C., Zhu, Y. M. and Jia, Z. S., 1999. Study on influential factors of phosphorus release from West Lake sediments.Report of the Suwa Hydrobiological Station, Publishel by Faculty of Science, (11): 83–86.
VanLuijn, F., Boers, P. C. M., Lijklema, L. and Sweerts, J. P. R. A., 1999. Nitrogen fluxes and processes in sandy and muddy sediments from a shallow eutrophic lake.Wat. Res.,33(1): 33–42.
Wang, X. R., Hua, Z. Z. and Xu, L., 1996. Effects of environmental conditions on phosphorus release from sediments of Tai Lake.Environ. Chem.,15(1): 15–19 (in Chinese).
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Project (No.294059) supported by National Natural Science Foundation of Zhejiang Province, China
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Hu, Qh., Zhu, Ym., Song, J. et al. Effects of pH andEh on release of nitrogen and phosphorus from sediments of West Lake. J. Zhejiang Univ. Sci. A 4, 358–362 (2003). https://doi.org/10.1631/jzus.2003.0358
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DOI: https://doi.org/10.1631/jzus.2003.0358