海绵城市是指通过城市规划及建设管理,发挥建筑、道路和绿地、水系等生态系统对雨水的吸纳、蓄渗和缓释作用,控制雨水径流,使城市像海绵体一样,在适应环境方面具有良好的“弹性”。下雨时“城市海绵体”把雨水吸纳存储起来,缺水时则把储存起来的水释放出来加以利用,因时因势吸水储水渗水净水,将洪水变成水资源。近年来,一到汛期我国许多城 Sponge city refers to through the city planning and construction management, make full use of buildings, roads and green spaces, water systems and other ecosystems to absorb rainwater storage, storage and release of slow release, control of rainfall runoff, the city like a sponge, to adapt to the environment has Good “elasticity”. When it rains “urban sponge ” to absorb the rain to store up, when the water is out of storage to release the use of water, because of potential water storage water seepage water, the floodwater into water resources. In recent years, many cities in our country come into flood season