A Study of Urban Wetland Planning on the Basis of Low Impact Development Idea

The core idea of Low Impact Development (LID) is to minimize the human impact on the ecological environment. The LID idea can integrate the city development and ecological protection into a unity,mitigate damage to the ecological environment in urban development, maintain and protect an undisturbed natural ecosystem mechanism in city,restore and rehabitate those damaged ecosystems. The application result of LID implementation can promote the planning and development of urban wetlands. Firstly, the technical measures of LID can increase the natural water supply in urban wetland systems,also can reduce the hydrological volatility in city. Secondly, it works in reducing sewage treatment stress in urban wetland system and decreasing investment for wetlands' controlling pollution. Finally,the LID method can bring out the uniqueness of the planning and development urban wetlands. Taking Meishan city in Sichuan province for example,in this paper,corresponding suggestions are put forward for the urban wetland planning about wetlands planning guidelines and objectives,planning wetland vegetation,wetland revetment ecology design, management and monitoring of wetland resources, wetland public education and public training,and so on.