山地城市海绵型绿地立体构建途径

摘要

Along with the idea of sponge city development and related practice projects in pilot cities,more and more attention has been paid to the research on special type of sponge city.Based on the past observation on rainfall,runoff characteristics in mountain cities,this paper addressed existing problems of storm water management and focused on the interrelationship among mountain,river,city,and green space in the natural process of rainfall and runoff.Four types of characteristic of sponge green spaces (mountaintop,slope,platform,and gully) were concluded and how they affected storm water management was summarized.Furthermore,by following the process of rainfall and runoff,an approach to establishment of three-dimensional sponge green space system in mountain city has been introduced,which integrated the different phases of sources,transfer,and storage in the process of rainfall and runoff,and improved the function of storm water management in mountain city.%随着海绵城市建设理念的提出以及试点城市建设的开展,针对特殊类型海绵城市建设的研究越来越受到重视.本文以山地城市为研究对象,在梳理其降雨径流过程特征的基础上,分析了山地城市在雨洪管理方面所存在的问题,阐述了基于降雨径流过程的山地城市山、水、城、绿地之间的关系,总结了山地城市四类海绵型绿地(山顶绿地、斜坡绿地、平台式绿地和沟谷绿地)的特征及其在雨洪管理方面的作用,依据降雨径流“产流-汇流”的过程,结合“源头-过程-终端”的不同环节,提出山地城市海绵型绿地立体构建的途径,以此提升山地城市绿地系统的雨洪调蓄功能.