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环境因素对长寿湖底泥释磷影响的模拟实验研究

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周欣, 郭海涛, 张进忠, 徐金祥, 徐卫红. 环境因素对长寿湖底泥释磷影响的模拟实验研究[J]. 环境工程学报, 2013, 7(5): 1671-1675.
引用本文: 周欣, 郭海涛, 张进忠, 徐金祥, 徐卫红. 环境因素对长寿湖底泥释磷影响的模拟实验研究[J]. 环境工程学报, 2013, 7(5): 1671-1675.
shu
Zhou Xin, Guo Haitao, Zhang Jinzhong, Xu Jinxiang, Xu Weihong. Simulated study on phosphorus release from sediment in Changshou Lake influenced by environmental factors[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1671-1675.
Citation: Zhou Xin, Guo Haitao, Zhang Jinzhong, Xu Jinxiang, Xu Weihong. Simulated study on phosphorus release from sediment in Changshou Lake influenced by environmental factors[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1671-1675.
shu

环境因素对长寿湖底泥释磷影响的模拟实验研究

  • 1.

    西南大学资源环境学院/三峡库区生态环境教育部重点实验室,重庆 400715

  • 2.

    重庆市农业资源与环境重点实验室,重庆 400716

  • 基金项目:

    公益性行业(农业)科研专项经费资助项目(200903056)

    现代农业产业技术体系建设专项(NYCYTX-35-GW16)

  • 中图分类号: X524

Simulated study on phosphorus release from sediment in Changshou Lake influenced by environmental factors

  • 1.

    Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China

  • 2.

    Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing 400716, China

  • Fund Project:

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  • 摘要: 肥水养殖显著增加了长寿湖底泥中的磷含量。为了解肥水养殖积累在湖泊底泥中磷的释放情况,以长寿湖大坝口枯水期底泥为实验材料,模拟研究了不同环境条件(上覆水pH、温度、DO含量和扰动)下湖泊底泥的释磷特征。结果表明,在弱碱性条件下,底泥释磷量随上覆水pH的升高而升高;温度升高有利于底泥磷的释放,温度每升高5℃,第21天时底泥释磷量增大0.0045～0.0074 mg/L;DO含量降低有利于底泥中铁/铝结合态磷的释放;扰动对底泥磷的释放没有明显影响。研究表明,网箱养殖增加了底泥中的有机磷含量,促进有机磷向无机磷转化,增大了底泥中磷的释放风险。
    Abstract: Fertilizer water culture obviously increased the amount of phosphorus in the sediment of Changshou Lake. To know the release situation of phosphorus accumulated in lake sediment by fertilizer water culture, the sediment collected from Changshou Lake during low water period was used as the experimental material, the release characteristics of phosphorus from lake sediment were studied by simulation experiment under different environmental conditions (overlying water pH, temperature, DO content and disturbance). The results showed that the release amounts of phosphorus from the sediment increased with pH value of the overlying water increasing under weakly alkaline condition. High temperature promoted phosphorus to release from the sediment, the release amount of the 21st day increased 0.0045～0.0074 mg/L when the temperature increased every 5℃. Low DO content promoted Fe/Al-P to release from the sediment, and disturbance had no distinct influence on phosphorus release from the sediment. This study revealed that cage culture increased the content of organic phosphorous in the sediment, and promoted organic phosphorous to transform into inorganic phosphorous, which may increase the release risk of phosphorus from the sediment.
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  • 收稿日期:  2012-02-15
  • 刊出日期:  2013-05-22
周欣, 郭海涛, 张进忠, 徐金祥, 徐卫红. 环境因素对长寿湖底泥释磷影响的模拟实验研究[J]. 环境工程学报, 2013, 7(5): 1671-1675.
引用本文: 周欣, 郭海涛, 张进忠, 徐金祥, 徐卫红. 环境因素对长寿湖底泥释磷影响的模拟实验研究[J]. 环境工程学报, 2013, 7(5): 1671-1675.
shu
Zhou Xin, Guo Haitao, Zhang Jinzhong, Xu Jinxiang, Xu Weihong. Simulated study on phosphorus release from sediment in Changshou Lake influenced by environmental factors[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1671-1675.
Citation: Zhou Xin, Guo Haitao, Zhang Jinzhong, Xu Jinxiang, Xu Weihong. Simulated study on phosphorus release from sediment in Changshou Lake influenced by environmental factors[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1671-1675.
shu

环境因素对长寿湖底泥释磷影响的模拟实验研究

  • 1.  西南大学资源环境学院/三峡库区生态环境教育部重点实验室,重庆 400715
  • 2.  重庆市农业资源与环境重点实验室,重庆 400716
  • 收稿日期:  2012-02-15
基金项目:

公益性行业(农业)科研专项经费资助项目(200903056)

现代农业产业技术体系建设专项(NYCYTX-35-GW16)

摘要: 肥水养殖显著增加了长寿湖底泥中的磷含量。为了解肥水养殖积累在湖泊底泥中磷的释放情况,以长寿湖大坝口枯水期底泥为实验材料,模拟研究了不同环境条件(上覆水pH、温度、DO含量和扰动)下湖泊底泥的释磷特征。结果表明,在弱碱性条件下,底泥释磷量随上覆水pH的升高而升高;温度升高有利于底泥磷的释放,温度每升高5℃,第21天时底泥释磷量增大0.0045～0.0074 mg/L;DO含量降低有利于底泥中铁/铝结合态磷的释放;扰动对底泥磷的释放没有明显影响。研究表明,网箱养殖增加了底泥中的有机磷含量,促进有机磷向无机磷转化,增大了底泥中磷的释放风险。

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