Challenges in urban stormwater management in Chinese cities: A hydrologic perspective

Sang, Yan‐Fang; Sivakumar, Bellie; Chan, Faith Ka Shun; Pan, Xingyao

doi:10.1016/j.jhydrol.2020.125314

Cited by 18 publications

(12 citation statements)

References 31 publications

(30 reference statements)

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“…Rain gardens are more miniature, shallow, sunken planting areas that catch rainwater runoff from roofs, sidewalks, and sidewalks. They are also referred to as Bio retention cells, and they are intended to diminish storm water contamination by mimicking the natural methods water flows greater than and is absorbed into the ground [29], [30].…”

Section: Types Of Green Infrastructurementioning

confidence: 99%

Green Infrastructure- A Roadmap Towards Sustainable Development

Kumar

Mukul²,

Kaur³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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India is the fifth more vulnerable country to climate change consequences, with 2.54.5 per cent of Gross Domestic Product (GDP) at risk every year. In conclusion, India has committed to reducing the greenhouse emissions of its Gross Domestic Product by 33-35 per cent by 2030, compared to 2005 levels. However, India will need to raise $2.5 trillion between 2016 and 2030 to accomplish this goal (MOEFCC, 2015). However, climate-related investments — both public and private — in green infrastructure development remain restricted. While India has taken several measures to solve this issue, rising green investments would need a greater emphasis on India’s infrastructure development. Long-term infrastructure is essential for a better future in an era when India announced that it would begin its decarburization journey to reach specified green targets. Green infrastructure is innovation and practices that employ natural systems to get better the overall value of the environment and provide ecological, social, and economic rewards. The study describes the contribution and investment in green infrastructure to optimize the growth with sustainable development in India. The research reveals that effective planning for green investment helps to maintain the adequate trade-off between development and ecosystem.

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Section: Types Of Green Infrastructurementioning

confidence: 99%

Green Infrastructure- A Roadmap Towards Sustainable Development

Kumar

Mukul²,

Kaur³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…For example, 26.3% of blue-green spaces (wetlands and vegetated areas) in the Shenzhen River catchment were lost between 1988 and 2008 to the construction of financial centres and transport hubs (Xie & Ng 2013). The associated surface sealing generates pluvial flooding, diffuse water pollution, and loss of groundwater recharge, the latter being significant as many Chinese cities lack adequate dry season water storage (Zhang et al 2011;Yang et al 2020b). Flood protection infrastructure is minimal, and most Chinese cities, including critical city centre and old town areas, have drainage systems designed to cope only with 1-in-1-year to 1-in-5-year flood return periods compared with the (still modest) 1-in-50 year protection standard of Hong Kong and Singapore (Zhang et al 2011;Yang et al 2020b).…”

Section: The Scpmentioning

confidence: 99%

“…The associated surface sealing generates pluvial flooding, diffuse water pollution, and loss of groundwater recharge, the latter being significant as many Chinese cities lack adequate dry season water storage (Zhang et al 2011;Yang et al 2020b). Flood protection infrastructure is minimal, and most Chinese cities, including critical city centre and old town areas, have drainage systems designed to cope only with 1-in-1-year to 1-in-5-year flood return periods compared with the (still modest) 1-in-50 year protection standard of Hong Kong and Singapore (Zhang et al 2011;Yang et al 2020b). Storm events are more intense and frequent with climate change, and in the last decade, urban floods (e.g., Beijing in 2012, Shanghai in 2013, Ningbo in 2013, Shenzhen in 2014 Wuhan in 2016) have caused personal injuries, home and workplace damage, and inundation of road and rail networks with substantial disruption to economic and social activities (Chan et al 2018b;Liu et al 2018).…”

Section: The Scpmentioning

confidence: 99%

Can green city branding support China's Sponge City Programme?

et al. 2022

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China's Sponge City Programme (SCP) is one of the world's most ambitious sustainable urban drainage programmes. By 2030, Chinese cities must have 80% of their land drained by Blue–Green Infrastructure (BGI) to build critically needed flood resilience. Costs must be met from municipal and private finance, but BGI lacks the revenue streams of public assets like utilities, so has limited appeal to public–private partnerships. Finance options, including Green Bonds targeting institutional investors, and Payment for Urban Ecosystem Service schemes targeting local citizens and businesses, need developing. Green city branding could lever such finance but despite widespread use of green branding to attract investment, sponge branding strategies are immature, and alignment is needed in green branding between sponge project type (e.g., flagship and retrofit), financial instrument, and target financier, to develop differentiated brands that appeal to a diversity of SCP investors. With little grassroots input into city branding, and SCP problems of green gentrification, local support for SCP implementation may be at risk. This is concerning, because cities need local citizens and businesses to invest in the SCP to achieve the extensive retrofit needed, as retrofit (using small-scale BGI such as stormwater planters, de-paving, and raingardens) has little appeal for institutional investors.

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“…Sponge city construction has been promoted in China since 2013, with 45 demonstration districts in 2022. Compared to other urban stormwater management systems, sponge cities emphasize the ideas of “multiobjective” and “systematic management”, aiming to tackle the problems of the water environment, water ecology, and waterlogging (Li & Zhang, 2022; Yang et al, 2020). Although sponge cities achieve their goal under certain conditions, they remain insufficient for decreasing flooding risks effectively (Zeng et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Evaluating the effect of building patterns on urban flooding based on a boosted regression tree: A case study of Beijing, China

Wang

et al. 2023

Hydrological Processes

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Rapid urbanization and global climate change are likely to exacerbate urban flooding intensity, frequency and uncertainty. Thus, it is fundamental and crucial to investigate the dominant influencing factors for the mitigation of urban flooding. However, knowledge about the influence of building patterns on urban flooding remains limited. Taking Beijing, a typical megacity, as a case study area, we quantified the importance of building patterns and their interaction effect at the subwatershed scale using the boosted regression tree and geographical detector model. The results indicated that (1) the landscape shape index, slope, green space ratio and waterbody ratio were the most important influencing factors determining urban flooding, with a total relative contribution of 67.23%; (2) building metrics had a certain impact on urban flooding, and the sum of the relative contribution reached 21.03%; (3) the landscape shape index, slope, and green space ratio exhibited a combination of negative and positive correlations with urban flooding density; and (4) an enhancement effect existed between building metrics, especially the building congestion degree and building density. These findings provide quantitative insights on rational urban morphology planning which could be applied to improve stormwater management and promote urban sustainability in megacities.

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Challenges in urban stormwater management in Chinese cities: A hydrologic perspective

Abstract: 0.80. Based on these results, we offer proper approaches and key suggestions towards useful guidelines for delivering better SCP in the Chinese cities.

Cited by 18 publications

References 31 publications

Green Infrastructure- A Roadmap Towards Sustainable Development

Green Infrastructure- A Roadmap Towards Sustainable Development

Can green city branding support China's Sponge City Programme?

Evaluating the effect of building patterns on urban flooding based on a boosted regression tree: A case study of Beijing, China

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