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传统的城市开发替代自然透水地表,改变了自然的水文循环,导致了渗透、蒸发和地下水回灌从根本上的减少,从而引发城市热岛效应和暴雨内涝灾害。在可持续城市雨水管理的框架下,可持续城市排水系统、低冲击开发以及水敏性城市设计为城市设计和规划提供了新的策略。近年来,绿色屋顶因其多重生态系统服务功能而得到越来越多的关注,其中最重要的生态系统服务功能这一即是提供可持续雨水控制,用屋顶这种看起来没有得到利用的城市表面用于恢复开发前的渗透和保存等水文功能。雨水滞留是绿色屋顶所能提供的重要水文服务
Traditional urban development replaces the naturally permeable surface and changes the natural hydrological cycle, resulting in a fundamental reduction of infiltration, evaporation and groundwater recharge, leading to the urban heat island effect and storm waterlogging disaster. Within the framework of sustainable urban stormwater management, sustainable urban drainage systems, low-impact development and water-sensitive urban design offer new strategies for urban design and planning. In recent years, green roofs have received increasing attention for their multiple ecosystem services, one of the most important ecosystem services being the city that provides sustainable rainwater control and uses roofs that appear to be underutilized Surfaces are used to restore pre-development infiltration and preservation hydrological functions. Rainwater retention is an important hydrological service that green roofs can provide