2. Repair the urban ecological environment, alleviate the effect of urban heat island and rain island, and build a green, harmonious, ecological and safe urban living environment.
3, increase the intensity of urban greening, beautify the urban environment, and enhance the city's taste.
Extended data:
Sponge city is a new generation of urban rainwater management concept, which can also be called "water elastic city". The international term is "low-impact development rainwater system construction". Absorb water, store water, seep water and purify water when it rains, and "release" the stored water for use when necessary.
The extensive application of "sponge city" materials shows excellent characteristics such as water seepage, compression resistance, wear resistance, anti-slip, environmental protection, beauty, comfort and easy maintenance, sound absorption and noise reduction. And it has become a "breathing" urban landscape pavement, which has also effectively alleviated the urban heat island effect and stopped the urban pavement from heating up.
Refer to Baidu Encyclopedia: Sponge City