增殖放流对太湖水环境治理的作用及相关政策建议

The effect of proliferation and release on water environment control in Taihu Lake and related policy suggestions

2007年以来,国家对太湖水污染治理提出了控源截污、蓝藻打捞、底泥清淤等一系列综合治理措施,取得了一定的成效,但目前水体中氮、磷指标仍然偏高。移出水体中富含的氮磷成为治理太湖水环境的关键。笔者认为应用生物操纵理论移除水体中的氮磷是治理太湖水环境既高效低耗又有产出的好方法。本文阐述了水生生物净水的机理,设计利用增殖放流水生生物来提高渔业净水的功能,在分析太湖增殖放流实践和其净水功能的基础上,提出提高增殖放流鱼类净水效果的对策与建议。

Since 2007, a series of comprehensive control measures, such as source-intercepting,cyanobacteria salvage and sedimentation,have been put forward to Taihu Lake water pollution and have obtained certain positive influence. However,the nitrogen and phosphorus indicators in water are still in high level. The key of control the water environment of Taihu Lake is the emigration of nitrogen and phosphorus from water. In author＇ s opinion,biology operation theory on detachment of nitrogen and phosphorus is the effective and low-costing solution. In this paper,the mechanism of water purification by aquatic organisms was elucidated and a theory on improving efficiency of water purification by proliferation and release was supposed. Based on the analysis of the practice of proliferation and release and their effecting on water purification in Taihu Lake,the countermeasures and suggestions of proliferation and release were put forward to improve the effect of water purification.