Traditional urban design often uses a lot of hard materials, such as concrete and pavement, to quickly drain rainwater, which leads to a sharp decline in urban rainfall permeability and water can not be effectively infiltrated and stored in the city. This design will lead to excessive rainwater runoff, which will lead to the aggravation of flood and water pollution problems.
Sponge city is a kind of urban design method based on nature. By introducing green infrastructure, adjusting urban topography and perfecting rainwater collection and utilization system, the urban rainwater management ability can be improved. These measures include the construction of rainwater gardens, green roofs, rainwater collection pools, etc.
By increasing the permeable area in the city, sponge city can better infiltrate and store rainwater, reduce the pressure of flood control and improve the flood control ability of the city. In addition, the sponge city design can also improve the ecological environment of the city, increase the green coverage rate of the city, improve the air quality and reduce the urban heat island effect.
Sponge city features:
Water resources management: Sponge City adopts a series of measures to manage and utilize water resources, including rainwater collection and storage, rainwater infiltration and flood storage. By effectively managing water resources, sponge cities can provide continuous and stable water supply and reduce flood risks.
2. Green infrastructure: Sponge City encourages the construction of green infrastructure, such as rain gardens, wetland parks and green roofs. To retain rainwater and reduce runoff. These green infrastructures not only beautify the urban environment, but also provide leisure and ecological functions.
3. Nature protection and ecological restoration: Sponge city pays attention to protecting and restoring the natural environment, protecting natural rivers and wetlands by planting green vegetation, improving the health of urban ecosystem and enhancing the natural adaptability of the city.
4. Energy conservation and low carbon: Sponge cities promote energy conservation and emission reduction, and promote low carbon development. By building energy-efficient buildings, promoting low-carbon transportation and using renewable energy, we can reduce urban carbon emissions and improve energy efficiency.