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Monday, April 9 • 5:30pm - 7:00pm
POSTER: How Can Green Infrastructure Better Contribute to the Sponge City Program in China?

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AUTHORS: Hongmei Lu*, Department of Social Sciences, Michigan Technological University, Shanghai Academy of Landscape Architecture Science and Planning; Audrey L. Mayer, School of Forest Resources and Environmental Science, Michigan Technological University

ABSTRACT: Abstract: The function of green infrastructure (GI) in mitigating urban flooding is extensively recognized. In China, GI establishment has been expected to primarily provide recreational space, given the high population density of Chinese cities. The “7.12” rainstorm disaster in Beijing in 2012 put urban flooding issues high on the political agenda. In 2014, the central government initiated the national Sponge City program (2015-2030), which called on dozens of pilot cities to improve both grey and green infrastructure to reduce urban flooding. This is the first time GI was officially identified as an urban stormwater management approach. Two general categories of GI are proposed in this program: sunken ground greenspace (10-20cm lower than the ground level); and green roofs. Most pilot cities have GI targets set by municipal technological guidelines, some even as high as 60% of sunken greenspace (out of all ground-level greenspace) and 50% for green roofs.In the past three years of the Sponge City program, the roof greening rate has not increased by much, and the sunken greenspace has been controversial. Here we examine the gap that has emerged between policy goals and reality, and explore its causes. We find that misunderstandings about how the GI provides stormwater management functions and a lack of trans-disciplinary collaboration among landscape ecologists, landscape architects, and urban managers and planners are the main barriers to meeting Sponge City goals. In order to make GI function efficiently, we suggest more emphasis of correctly identifying the ecological roles of GI, while fostering substantial collaboration to better design urban GI to meet multiple aesthetic and ecological functional goals.

Monday April 9, 2018 5:30pm - 7:00pm CDT
Monroe Room

Attendees (1)