How to divide sponge city
In recent years, sponge city has attracted much attention as an important concept of sustainable urban development. Sponge cities imitate the hydrological cycle of natural ecosystems to achieve the penetration, storage, purification and utilization of rainwater, thereby alleviating urban waterlogging and improving the water environment. So, how should sponge cities be divided? This article will give you a detailed analysis of the sponge city zoning method based on the hot topics and hot content on the Internet in the past 10 days.
1. Zoning Principles of Sponge City
The zoning of sponge cities requires comprehensive consideration of natural geographical conditions, urban functional layout, rainfall characteristics and other factors. The following are the main principles of sponge city zoning:
| Zoning principle | Specific content |
|---|---|
| natural hydrological characteristics | Divided according to natural conditions such as watershed, topography, soil permeability, etc. |
| Urban functional layout | Combined with the needs of different functional areas such as residential areas, commercial areas, and industrial areas |
| rainfall characteristics | Consider annual rainfall, rainfall intensity, seasonal distribution and other factors |
| infrastructure conditions | Assess the carrying capacity of existing infrastructure such as drainage systems and green space systems |
2. Zoning method of sponge city
Based on practical experience at home and abroad, sponge city zoning usually adopts the following methods:
| Partition method | Applicable scenarios | technical measures |
|---|---|---|
| Watershed Zoning Act | Suitable for cities with developed natural water systems | Construct rainwater management units based on watersheds |
| functional partitioning | Suitable for cities with clear functional divisions | Develop differentiated strategies based on different functional areas such as residential, commercial, and industrial areas |
| grid partition method | Suitable for new urban areas or planned areas | Divide the city into several grids and implement independent sponge measures in each grid |
3. Implementation steps of sponge city zoning
The implementation of sponge city zoning needs to follow scientific steps to ensure the rationality and operability of the zoning:
| steps | Main content |
|---|---|
| data collection | Collect basic data such as topography, hydrology, meteorology, and land use |
| Current situation assessment | Analyze the shortcomings and potential of existing drainage systems and green space systems |
| Zoning | Delineate different functional areas of the sponge city based on zoning principles and methods |
| Measures formulated | Develop specific sponge city construction measures for each zone |
| Implementation and monitoring | Implement in phases and establish a monitoring and evaluation mechanism |
4. Typical cases of sponge city zoning
The following are typical cases of sponge city zoning at home and abroad for reference:
| city | Partition characteristics | effectiveness |
|---|---|---|
| Shenzhen | Watershed zoning is used to divide multiple stormwater management units | Effectively alleviated urban waterlogging and improved rainwater utilization |
| Shanghai | Implement differentiated measures in commercial and residential areas in conjunction with functional zoning laws | Improved urban water environment and reduced non-point source pollution |
| singapore | Adopting the grid partition method, each grid independently implements sponge measures | Achieved full-process rainwater management and improved urban resilience |
5. Future development trends of sponge city zoning
With the advancement of technology and the update of concepts, sponge city zoning will show the following development trends:
1.Intelligent partitioning: Utilize big data, Internet of Things and other technologies to realize dynamic adjustment and optimization of partitions.
2.Refined partitioning: Combined with high-precision geographical information data, more detailed sponge units are divided.
3.collaborative partitioning: Strengthen cross-department and cross-regional collaboration to achieve overall coordination among regions.
4.ecological zoning: Pay more attention to ecosystem integrity and biodiversity.
The zoning of sponge cities is the foundation and key to the construction of sponge cities. Through scientific and reasonable zoning, the comprehensive benefits of sponge cities can be fully utilized and provide strong support for the sustainable development of the city.
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