Benefit Evaluation of Sponge City Based on Improved Fuzzy Evaluation Method
In recent years,with the rapid development of social economy,the acceleration of urbanization and the increase of urban surface hardening rate,the risk of urban waterlogging has been greatly increased and the urban non-point source pollution has become increasingly serious,so it is urgent to improve the living environment.Taking Miaotouchung flood drainage area in Guangzhou as the research area,SWMM model was established and determined,and the impact of LID facilities on runoff and pollution was compared and analyzed.Finally,the improved fuzzy evaluation method was applied to evaluate the comprehensive benefits of LID from three dimensions of economy,environ-ment and society.The results show that after the deployment of LID,the comprehensive benefit of Miaotouchong area in Guangzhou is im-proved from grade Ⅳ to grade Ⅱ,and the comprehensive benefit is good.When arranging many LID facilities in Miaotouchong drainage area,priority should be given to permeable pavement and green roof,which can reduce 77％of total runoff and 40％of pollutants.When laying sin-gle LID facilities in Miaotouchong drainage area,priority should be given to laying permeable pavement,which can reduce the total runoff by 35％and the pollutants by 20％.
国家科技期刊平台
NSTL
万方数据
