“Sponge” Concept -Discussion on the Theory of Stormwater Management Construction in Urban Area

In recent years, many cities and rural areas are facing frequent waterlogging, run-off pollution, huge loss of rainwater resources, damaged ecosystem and many more rain water problems. In regional perspective, how to construct a sustainable stormwater management measure have been presented as an important issue in many cities and urban agglomeration in China. This paper attempts to explain the “big sponge” conceptual point of view through the proposed concept, main construction method and elements, ecological diversity and other perspectives of sponge cities, to provide a basis for the theoretical research of integrated stormwater management construction in regional city group.