基于GI理论的LID措施在居住区人工湖生态系统建设中的应用

Application of GI theory based LID measures in construction of artificial lake ecosystem in residential area

顺畅的水系流动性是维持人工湖优质水质的前提,多生态处理外源污染物污染水体是保持人工湖优质水质的保障。基于苏州市某居民区已建人工湖系统,遵循GI理论(非盈利性可持续建设与良性循环),通过源头减排、过程控制、系统治理,组合使用外部水力循环系统、下沉式绿地、多孔透水路面、河岸生态滤池系统等多生态LID措施加以修建,以雨水和附近河水作为补给水源,构建居住区内水体的水生态、水安全、水环境和雨水资源化利用四位一体生态人工湖系统,为集中居住区人工湖的建设提供参考与借鉴。

Smooth flow of water is a prerequisite for maintaining high water quality in artificiallakes. Control of importing pollutants is the guarantee of maintaining excellent water quahty ot ar- tificial lakes. Based on an artificial lake system of a residential district in Suzhou City, according to the GI theory, an ecological artificial lake system was constructed by adopting multi-ecological I.ID measures, which included source reduction, process control, systematic management, combination of external water cycle system, sunken greenland, porous permeable pavement and riparian ecologi cal filter system. By using rain water and nearby river as a source of water supply, the ecological artificial lake system provided four-in-one functions including water ecology, water security, water environment and rainwater resource utilization to the residential area. It can provide reference for the construction of artificial lake in concentrated residential area.