Research article // Integration of green and gray infrastructures for sponge city: Water and energy nexus
By Yongjun Sun, Li Deng, Shu-Yuan Pan, Pen-Chi Chiang, Shailesh S. Sable, Kinjal J. Shah. This paper introduces the concepts of gray infrastructure, green infrastructure, sponge city, etc., understands its core connotation, proposes different levels of water problems brought about by urbanization, ecological problems, and management issues of building sponge cities and integrating gray-green infrastructure. Moreover, it elaborates on the above aspects and gives corresponding and reasonable strategies for the proposed problems.
Urban sponge body schematic. © The authors
Highlights
- Concept and principle of integration of green and gray infrastructures were addressed.
- Barriers and strategies of integration of green and gray infrastructures were proposed.
- Key performance indicators of integration of green and gray infrastructures were developed.
- Key performance indicators of integration of green and gray infrastructures were developed.
Abstract
In the past few decades, urban flooding and water shortages caused by the rapid expansion of cities and the destruction of construction ecology have been harshly lost. The current ecological rainwater management system is based on the traditional gray infrastructure and cannot effectively solve the water problems of different scales. Sponge city, as an advanced rainwater management technology, plays a vital role in urban transformation and new construction. While building a sponge city, the gray infrastructure will be integrated to form a gray-green infrastructure integration, and the relationship between water and energy in the sponge city will be coordinated. This paper proposes the problems encountered in the transformation of the gray infrastructure of the sponge city to the green infrastructure and the measures to be taken. The integrated indicator system is used to comprehensively evaluate the integration of the gray-green facilities.
Keywords
Grey infrastructure, Green infrastructure, Sponge city, Water and energy, Evaluation
Published
2020
By
Citation
Sun, Y., Deng, L., Pan, S.-Y., Chiang, P.-C., Sable, S. S., & Shah, K. J. (2020). Integration of green and gray infrastructures for sponge city: Water and energy nexus. Water-Energy Nexus, 3, 29–40. https://doi.org/10.1016/j.wen.2020.03.003
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Integration of green and gray infrastructures for sponge city: Water and energy nexus