RESEARCH ON WETLAND ECOLOGICAL RESTORATION OF COAL MINING SUBSIDENCE AREA IN SUZHOU, CHINA

ZhuXianLuLing and QiTaoQian subsidence areas are two typical coal mining subsidence areas in Suzhou city, Anhui province, China. Based on the differences in the subsidence depth of the areas, the different modalities of wetland are prescribed. With an aim to maximize the comprehensive interest in the composite ecology-landscape-water delivery system, a layout of the wetland with an ideal ecological restoration under different water depths and a proper landscape designing considering relationship between distribution and storage capacities of the areas have been put forward. According to the different depth of subsidence, the area is divided into four types: deep water area, drop zone, shallow wet and coastal area. Furthermore, the distribution of wetland plants is recommended on the basis of their wetland habitat. It is of great importance to developing wetland in the mining subsidence area to improve the ecological and living environment, to enhance the urban life, and to provide a technical reference for constructing wetland in other coal mining subsidence areas.