The capacity of grey infrastructure in urban flood management: A comprehensive analysis of grey infrastructure and the green-grey approach

Chen, Wenjie; Wang, Weiqi; Huang, Guoru; Wang, Zhaoli; Lai, Chengguang; Yang, Zhiyong

doi:10.1016/j.ijdrr.2021.102045

Cited by 70 publications

(29 citation statements)

References 42 publications

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“…The Hangzhou study reports the results of a survey with green-space users and their tendency toward tree planting in public and communal green spaces as a climate change adaptive response [98]. The results showed that green space users believed that individual actions could reduce climate change impacts (flooding, heatwaves) [99][100][101][102]. Zhang et al indicated that larger amounts of green space mitigate flooding risk while aggregating green space into larger, separate areas exacerbate risk in Luohe, China [93].…”

Section: Flooding Risk Managementmentioning

confidence: 99%

Reported evidence of greenness co-benefits on health, climate change mitigation, and adaptation: a systematic review of the literature

Kınay¹,

Ji²

2022

Environ. Res.: Climate

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This systematic review aims to appraise the quality of evidence on greenness co-benefits of climate change and health. Although there is evidence of the co-benefits of greenness on climate change and health, the research is of poor quality when it comes to addressing the connections and identifying mediators of greenness and climate change mitigation associations. As a result, the evaluation sought to identify areas where there was little or no evidence in order to guide future research. Current published studies mainly covered six health outcome categories (birth outcomes, physical activity, mental wellbeing, obesity, mortality, and cognitive function). For adaptation, greenness and climate change associated studies included (1) cooling down effect and urban heat island impact, (2) air quality improvement, and (3) flood mitigation. For each outcome, we performed a systematic search of publications on Web of Science, PubMed, Google Scholar, and Science Direct databases from 2000 to July 2021. After retrieving records in which full papers were assessed and non-English articles were excluded, a total of 173 articles, including research articles and reviews, were chosen. To ascertain the strength of evidence, all interventions were assessed using the GRADE approach. The quality of evidence ranged from moderate to high for most categories of health outcomes (birth outcomes, mental wellbeing, mortality). GRADE assessment provided low-quality evidence for studies on air quality, flood mitigation, physical activity, and obesity due to poor study design (observational or limited data) and high heterogeneity (some data provided variability), and the review concluded that there is insufficient evidence on firm recommendations for public health interventions. Due to a huge number of low quality evidence and several areas of overlapping study, this evaluation recognized the co-benefits of greenness on climate change and health as an understudied field and hence as a research gap. The evidentiary foundation for greenness-climate change mitigation links, on the other hand, was generally weak. Future research on climate change greenness co-benefit interventions should pay special attention to flood prevention, air quality interactions, and health effects including physical activity and obesity.

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Section: Flooding Risk Managementmentioning

confidence: 99%

Reported evidence of greenness co-benefits on health, climate change mitigation, and adaptation: a systematic review of the literature

Kınay¹,

Ji²

2022

Environ. Res.: Climate

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“…Cities' cooling measures, such as light color roofs, cool pavements, building insulation, shading structures, and flood control operations optimising pipeline systems, are monofunctional solutions that operate while being isolated from other urban matrix components [8]. Contrarily, vegetation cover on living roofs and streets with trees and bioswales bring solutions for both concerns, plus enhancing air quality, boosting biodiversity, and improving health levels [9].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Three megacities with environmental risks and high social inequality were selected, considering previous knowledge of the city, easy access to previous studies, and contrast in urban morphology. Megacities are dense urban centres with a population of over 10 million people [8]. The affected ecosystem services of these complex urban areas contribute to adverse social conditions.…”

Section: Literature Reviewmentioning

confidence: 99%

Memorial Parking Trees: Resilient Modular Design with Nature-Based Solutions in Vulnerable Urban Areas

Acosta

Stephen

2021

Land

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Nature-based solutions (NbS) include all the landscape’s ecological components that have a function in the natural or urban ecosystem. Memorial Parking Trees (MPTs) are a new variant of a nature-based solution composed of a bioswale and a street tree allocated in the road, occupying a space that is sub-utilised by parked cars. This infill green practice can maximise the use of street trees in secondary streets and have multiple benefits in our communities. Using GIS mapping and methodology can support implementation in vulnerable neighbourhoods. In this research, we based vulnerability assessments for London, Rio de Janeiro, and Los Angeles on the following three indicators: extreme temperature, air quality, and flood-prone areas. Evidence is emerging that disadvantaged populations may live at higher risks of exposure to environmental hazards [1]. The income and healthcare accessibility of neighbourhoods are the two indicators that will help us target these communities for a better and faster decision-making process. The contrast between the results and the 15-min city concept supports our detecting and prioritising neighbourhoods for MPTS implementation, among other NbS solutions integrated into a more inclusive and sustainable urban design.

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“…In addition, as a distributed hydrological model, the SWMM also provides a powerful rainfall-runoff calculation capability. Therefore, it has been widely used in various urban flood studies (Yang et al 2020;Chen et al 2021), and has become the computational core of 1D pipe models in many commercial software, such as Infoworks-ICM, PCSWMM, and XP-SWMM.…”

Section: Introductionmentioning

confidence: 99%

Urban Stormwater Modeling with Local Inertial Approximation Form of Shallow Water Equations: A Comparative Study

Wang

Chen

Huang

2021

Int J Disaster Risk Sci

Self Cite

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This study focused on the performance and limitations of the local inertial approximation form model (LIM) of the shallow water equations (SWEs) when applied in urban flood modeling. A numerical scheme of the LIM equations was created using finite volume method with a first-order spatiotemporal Roe Riemann solver. A simplified urban stormwater model (SUSM) considering surface and underground dual drainage system was constructed based on LIM and the US Environmental Protection Agency Storm Water Management Model. Moreover, a complete urban stormwater model (USM) based on the SWEs with the same solution algorithm was used as the evaluation benchmark. Numerical results of the SUSM and USM in a highly urbanized area under four rainfall return periods were analyzed and compared. The results reveal that the performance of the SUSM is highly consistent with that of the USM but with an improvement in computational efficiency of approximately 140%. In terms of the accuracy of the model, the SUSM slightly underestimates the water depth and velocity and is less accurate when dealing with supercritical flow in urban stormwater flood modeling. Overall, the SUSM can produce comparable results to USM with higher computational efficiency, which provides a simplified and alternative method for urban flood modeling.

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The capacity of grey infrastructure in urban flood management: A comprehensive analysis of grey infrastructure and the green-grey approach

Cited by 70 publications

References 42 publications

Reported evidence of greenness co-benefits on health, climate change mitigation, and adaptation: a systematic review of the literature

Reported evidence of greenness co-benefits on health, climate change mitigation, and adaptation: a systematic review of the literature

Memorial Parking Trees: Resilient Modular Design with Nature-Based Solutions in Vulnerable Urban Areas

Urban Stormwater Modeling with Local Inertial Approximation Form of Shallow Water Equations: A Comparative Study

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