上海城市现状绿地雨洪调蓄能力评估研究

Assessment on the Capacity of Rain Water Management by Multi-disciplinary Methods

面对亟待解决的城市雨洪问题,海绵城市的建设迫在眉睫,然而目前对于城市现有绿地的雨洪调蓄能力的评估缺乏量化研究。选取168处分别位于上海城市中心、近郊和远郊的不同功能及类型的城市绿地,通过调查群落特征、测定土壤理化性质及渗透率、分析室内降雨截留试验数据和SWMM水文模型演算,得出影响上海城市绿地现状雨洪调蓄能力的主要因素。结合降雨、径流、土壤、植被等因素的特征与绿地雨水调蓄能力之间的关系,构建出适合上海城市绿地雨洪调蓄能力的评价技术,为筛选适合上海城市绿地的低影响开发技术、确定开发规模奠定理论基础。

In order to relieve urban environmental problems of storm water,and propose approaches of green space planning forsponge city construction,characters of168green space were surveyed at the center of city,suburbs and the new city,respectively,byterms of multidisciplinary methods,such as community research,soil test,simulation experiment and SWMM models on the softwareAutodesk SSA.The factors affecting the capacity of rainwater management were identified,and the relationship among the capacityand rainfall,runoff,soil,and plants was analyzed,which provided the theoretical foundation for the LID selecting,scale identificationand assessment system.