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Open AccessArticle

Blue-Green Infrastructure for Sustainable Urban Stormwater Management—Lessons from Six Municipality-Led Pilot Projects in Beijing and Copenhagen

1
Department of Geosciences and Natural Resource Management, University of Copenhagen, 1958 Frederiksberg C, Denmark
2
Beijing Water Science and Technology Institute, Chegongzhuang West Road No.21, Beijing 100048, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(10), 2024; https://doi.org/10.3390/w11102024
Received: 9 August 2019 / Revised: 19 September 2019 / Accepted: 25 September 2019 / Published: 28 September 2019
(This article belongs to the Section Urban Water Management)
Managing stormwater on urban surfaces with blue-green infrastructure (BGI) is being increasingly adopted as an alternative to conventional pipe-based stormwater management in cities. BGI combats water problems and provides multiple benefits for cities, including improved livability and enhanced biodiversity. The paper examines six municipality-led pilot projects from Beijing and Copenhagen, through a review of documents, site observations and interviews with project managers. Beijing’s projects attempt to divert from a pipe-based approach but are dominated by less BGI-based solutions; they could benefit from more integration of multiple benefits with stormwater management. Copenhagen’s projects combine stormwater management with amenity improvement, but lack focus on stormwater utilization. Reviewed municipality-led pilot projects are shown to play an important role in both testing new solutions and upscaling them in the process of developing more sustainable cities. Key lessons are extracted and a simple guideline synthesized. This guideline suggests necessary considerations for a holistic solution that combines stormwater management and urban space improvements. Key lessons for sustainable solutions include defining a clear water technique priority, targeting both small and big rain events, strengthening ‘vertical design’ and providing multiple benefits. An integrated stormwater management and landscape design process is a prerequisite to the meaningful implementation of these solutions. Research and documentation integrated with pilot projects will help upscale the practice at city scale. View Full-Text
Keywords: blue-green infrastructure; pilot project; niche; stormwater management; multiple benefits; planning/design; sustainability transition blue-green infrastructure; pilot project; niche; stormwater management; multiple benefits; planning/design; sustainability transition
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MDPI and ACS Style

Liu, L.; Fryd, O.; Zhang, S. Blue-Green Infrastructure for Sustainable Urban Stormwater Management—Lessons from Six Municipality-Led Pilot Projects in Beijing and Copenhagen. Water 2019, 11, 2024.

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