东太湖生态修复研究

Ecological Restoration of East Taihu Lake

东太湖是长江中下游典型的浅水草型湖泊,是上海及苏州区域重要的水源地。目前湖内密布养蟹池,水体呈轻度富营养化,且底泥淤积严重,对行洪、供水安全及生物多样性均产生不利影响。东太湖生态修复主要是从生态学角度对规划的退网(垦)还湖、行洪通道疏浚等工程结束后水域进行分析,结合综合整治工程的不同分区,从物种、遗传及景观等层次,提出了东太湖生态修复的方法,进而分区、分类型,次序地推进生态修复工作。

East Taihu Lake is a typical shallow weedy lake in the middle and lower reaches of Yangtze River, as well as the main water source for Shanghai and Suzhou areas. Currently, a large number of crab-culture pools are densely distributed in the lake, the water is in mild eutrophication and mud siltation is severe, resulting in negative effects on flood mitigation, safety of water supply and biodiversity. The main objective of Ecological restoration for East Taihu Lake is to analyze the water conditions from ecological point of view after completion of the programs of conversion of net-fishing （cultivation） back to lake and dredging of flood relief channels. In combination with division of regions of the integrated management program, and from the levels of genetic, species and landscape, an approach to ecological restoration of East Taihu Lake was proposed to promote the ecological restoration in an orderly way according to different regions and types.