Sponge City海绵城市.ppt

文档介绍：is the place shown in the picture? is the man doing? is the geographical phenomenon in the picture ?Waterlogging! e to Beijing to see the sea ! Affected population :1,900,000 Death population :77 Economic lose :nearly t en billion Waterlogging! Drainage system Drought Over exploitation of groundwater Major:Geography Teaching Number:25 Name:Jiexiong Xia Sponge City What is the Sponge City ? 01 02How to build the Sponge City ? 03 CONTENTS Contents How should we build the Sponge City? What is the Sponge City ? Absorb 、storage 、purify and permeate water when it rains. Release and reuse the water when necessary. 123456 789 10 11 12 1314 1516 白城迁安济南镇江嘉兴厦门鹤壁武汉常德西咸新区遂宁重庆贵安新区萍乡南宁池州 Why shuold we build the Sponge City? t can alleviate the urban waterlogging. t can reduce urban run off pollution load. t can save water. can protect and improve the urban ecological environment. How to build the Sponge City? the original water ecosystem of the city. lake wetland ditch pond