Practical Research on the Application of Sponge City Reconstruction in Pocket Parks Based on the Analytic Hierarchy Process

Table 1

Analysis of specific cases of sponge renovation in pocket parks.

	Name	Scale	Characteristics
Foreign	St. Louis City Park	10,000 m^2	Integrate rainwater regulation and storage management and operation technology, use local peculiar plants to maintain rainwater facilities, and achieve effective rainwater infiltration and retention.
	California Park West Havenhurst	610 m^2	Inject various ecological features into prominent seating areas and gathering areas, and build a sustainable oasis by organically combining vegetation, water features, and buildings.
Domestic	Tsinghua University Shengyinyuan Rainwater Park	8316 m^2	Take measures to reform the sponge dry pond, ditch grass, gravel ditch, permeable paving, and so on to reduce stormwater runoff and increase the infiltration of rainwater and rainwater storage capacity, not only as an effective solution to the problem of accumulation of rainwater in the region but also to greatly improve the visual effect.
	Hangzhou Cuiyuan Park	6070 m^2	Through rational planting of vegetation, the natural water storage and seepage capacity of the park can be effectively improved, which has a significant effect on reducing the rainwater pollution.