Coupling of urban green space system and sponge city construction

Abstract

Through quantitatively analyzing the implementation of the sponge city concept in urban green space systems, this research explored the role of urban green spaces in collecting and using rainwater in a urban landscaping. By combining the ecological and recreational functions of the urban green spaces, as well as appropriate quantitative indexes, reasonable approaches for applying rainwater collection, infiltration and retention technologies in urban green space design and construction are suggested. Thus, the implementation of the sponge city concept in the initial planning stage of green spaces was considered. The Taihu New City in Wuxi was chosen as study case. Thus, this paper combined current planning status between green space and rainwater collection systems and analyzed them. As result, usable green spaces for the sponge city construction were obtained. Also, details on the construction characteristics of various usable green spaces were acquired. The role of these green spaces in the sponge city construction were classified and quantitatively assessed and compared with relevant standards. On the basis of guaranteeing green space intended purposes, this paper analyzed the results of coordinating the green space areas with rainwater collection systems and specified the role of various green spaces in the rainwater collection.