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水体中沉积物氮和磷的释放机制及其影响因素研究进展

Research Progress on Release Mechanisms of Nitrogen and Phosphorus of Sediments in Water Bodies and Their Influencing Factors

  • 摘要: 水体中沉积物氮和磷的释放是导致水体富营养化的主要原因。综述了水体中沉积物氮和磷的主要赋存形态,总结了沉积物氮和磷释放途径及其描述方法;从沉积物性质、上覆水的理化性质、生物、水体的水量变化、扰动作用5个方面,归纳了水体沉积物氮和磷释放过程的影响因素;阐述了水体中溶解氧含量、水体pH和水温对沉积物氮和磷释放的影响;最后,对未来相关研究进行了展望。

     

    Abstract: The nitrogen and phosphorus releasing from the sediments in the water bodies are the main cause of eutrophication. This study summarized the main occurrence forms of nitrogen and phosphorus in the sediments, and the release pathways and description methods of nitrogen and phosphorus. On the basis, the influencing factors of the release process of nitrogen and phosphorus in the sediments were concluded from 5 aspects, i.e., sediment properties, the physical and chemical properties of overlying water of the sediments, organisms, water volume change of the water bodies, and disturbance effect. Then, the effects of dissolved oxygen content in the water bodies, pH and the water temperature of the water bodies on the release of nitrogen and phosphorus in the sediments were clarified. Finally, the future related research was prospected.

     

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