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郑州的"海绵城市"失效了吗?专家这样解答|海绵城市


  
海绵城市是在什么样的背景下提出的?记者了解到,随着我国城镇化的进程加快和城市群的兴起,屋面、道路、地面等设施建设导致下垫面硬化,70%至80%的降雨形成径流,仅有20%至30%的雨水能够渗到地下,破坏了自然“海绵体”,导致逢雨必涝、城里看海和雨后即旱、旱涝急转,带来了水生态恶化、水资源紧缺、水环境污染等问题。
  
2012年4月,2012低碳城市与区域发展科技论坛上首次提出“海绵城市”的概念。海绵城市是指通过屋顶绿化、雨水收集利用设施等方式,综合采取“渗、滞、蓄、净、用、排”等技术措施,使城市能够像“海绵”一样,在适应环境变化、抵御自然灾害等方面具有良好的“弹性”。
  
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