A new framework to assess and optimize urban flood resilience with green-grey-blue system

IF 5.9 1区地球科学 Q1 ENGINEERING, CIVIL

Journal of Hydrology Pub Date : 2024-12-25 DOI:10.1016/j.jhydrol.2024.132614

Dingkun Yin, Xiaoyue Zhang, Haifeng Jia, Lili Xu, Qimeng Jia, Ye Yang

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引用次数: 0

Abstract

The vulnerability of cities to flood has become a global issue due to urbanization. Although various studies have been evaluated urban flood resilience using various indicators, a comprehensive flood resilience assessment method considering the entire process of stormwater runoff production and concentration remains a gap. To cope with this issue, a three-step new framework integrating index system construction, coupled model simulation and scenario optimization with green-grey-blue system (GGBS) was established. The results showed that poor flood recovery ability contributed mainly to low urban flood resilience (FR) in urbanizing areas. Optimization of GGBS preferred for blue and grey facilities, due to high marginal cost of green infrastructures (GIs). However, FR could increase by 78%-104% when incorporating GIs. Nevertheless, either few or excessive GIs would result in higher marginal costs, possibly due to the tradeoff between benefits and cost. Synergistic effects of GGBS were characterized by flood resistance and recovery enhancement, with mean recession time, mean runoff discharged into river, and storage capacity being the most sensitive indicators. Incorporation of GIs could reinforce the synergies by regulating landscape composition and hydrological connection.

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来源期刊

Journal of Hydrology 地学-地球科学综合

CiteScore

11.00

自引率

12.50%

发文量

1309

审稿时长

7.5 months

期刊介绍： The Journal of Hydrology publishes original research papers and comprehensive reviews in all the subfields of the hydrological sciences including water based management and policy issues that impact on economics and society. These comprise, but are not limited to the physical, chemical, biogeochemical, stochastic and systems aspects of surface and groundwater hydrology, hydrometeorology and hydrogeology. Relevant topics incorporating the insights and methodologies of disciplines such as climatology, water resource systems, hydraulics, agrohydrology, geomorphology, soil science, instrumentation and remote sensing, civil and environmental engineering are included. Social science perspectives on hydrological problems such as resource and ecological economics, environmental sociology, psychology and behavioural science, management and policy analysis are also invited. Multi-and interdisciplinary analyses of hydrological problems are within scope. The science published in the Journal of Hydrology is relevant to catchment scales rather than exclusively to a local scale or site.