| 环境因子对南四湖沉积物中磷释放的影响 |
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| 引用本文： | 李高金,周杰.环境因子对南四湖沉积物中磷释放的影响[J].农业环境科学学报,2006(Z2). |
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| 作者姓名： | 李高金 周杰 |
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| 作者单位： | 中国矿业大学环境与测绘学院 江苏徐州221008 |
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| 摘 要： | 以南四湖采样点4(韩庄运河)为研究对象,分析了环境因子(FeCl3、pH、温度)对沉积物内源磷释放特征的影响及原因。结果表明,铁盐加入的上覆水体总磷释放初始增幅较大,尔后呈下降的趋势;在设定的pH内(5.5,7.0,8.0),随着pH的升高而沉积物内源磷释放量增加;温度对内源磷的释放也有影响,当环境温度较低时,沉积物向上覆水体中释磷量比较小,随着环境温度的不断升高,沉积物释磷量显著增加。
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| 关 键 词： | 南四湖 沉积物 内源磷释放 环境因子 |
Effects of Environmental Factors on Release of Sediment Phosphorus in Nansihu Lake |
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| LI Gao-jin,ZHOU Jie.Effects of Environmental Factors on Release of Sediment Phosphorus in Nansihu Lake[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2006(Z2). |
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| Authors: | LI Gao-jin ZHOU Jie |
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| Abstract: | Release of internal phosphorus was evaluated and elucidated at different FeCl3,pH and temperature conditions from the fourth sampling site of Nansihu Lake.The results indicated that at initial stage,the release of internal phosphorus increased for a while,then decreased with the increasing concentrations of FeCl3,at the range of pH(5.5,7.0,8.0.) The amount of release of internal phosphorus increased with a rise of pH value,while the release of internal phosphorus from lake sediments varied with the temperatures.Little amount of internal phosphorus from lake sediments was released at low temperature,but with the increase of temperatures the amount of the release of internal phosphorus strongly increased. |
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| Keywords: | Nansihu Lake sediment internal phosphorus release environmental factors |
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