Research on the Different Natural Geological Impact and Suitability of Sponge City Construction
The construction of sponge cities has been an important issue in urban planning and stormwater management in recent years.The suitability and recommended measures for building sponge cities are different according to the different characteristics of geological environment.This study investigated two sponge city construction demonstration zones of typical geomorphic units including the Baisha and High-Tech areas in Zhengzhou.The analytic hierarchy process(AHP)was adopted to evaluate the suitability of the natural geological sponge entities in the study areas.Evaluative index system included land use,lithology,terrain slope and soil quality of surface and the composition and thickness of subsurface lithology based on identifying the geological and environmental conditions of the area.The results show that the suitability of Baisha was better than the High-Tech zone.Because of the high permeability of the geological strata and the shallow depth of the groundwater table,if the intensity of groundwater exploitation increased the better suitability of Baisha will be greatly enhanced.The suitability of the High-Tech zone is relatively poor because of poor permeability of the geological strata.The suggestions for corresponding low impact development(LID)facilities were given based on different natural sponge entity conditions.
万方数据
维普
