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Stage-specific integrated resilience of urban drainage systems through nature-based solutions

Author

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  • Cen, Luyao
  • Yang, Yixiao
  • Chen, Bin
  • Wang, Hao

Abstract

Resilient cities and nature-based solutions (NbS) offer strategies to mitigate flooding, enhance ecological environmental benefits, improve resilience, and promote sustainability. However, limited research addresses the resilience reduction caused by rainfall’s impact on urban water quality or the stage heterogeneity of NbS. This study redefines traditional flood resilience by proposing an integrated resilience framework for urban drainage systems. Performance of four NbS facilities, bioretention cells (BRC), rain gardens (RG), green roofs (GR), and permeable pavements (PP), was evaluated for water conservation, water purification, water quantity resilience, and water quality resilience under various rainfall return periods. Results show that conventional urban drainage systems support only water quantity resilience, whereas NbS improved water conservation, water purification, and water quality resilience. Ecosystem service enhancement varied by facility: BRC > RG > GR > PP. Moreover, integrated resilience effectiveness ranked BRC and RG highest. GR and PP are suitable for low-adaptability and low-resistance or recovery areas, respectively. In the combined scenario, optimal results were achieved with BRC and GR combinations. Finally, validation with actual rainfall confirmed the NbS utility.

Suggested Citation

  • Cen, Luyao & Yang, Yixiao & Chen, Bin & Wang, Hao, 2026. "Stage-specific integrated resilience of urban drainage systems through nature-based solutions," Land Use Policy, Elsevier, vol. 168(C).
    • Handle: RePEc:eee:lauspo:v:168:y:2026:i:c:s0264837726001638
    DOI: 10.1016/j.landusepol.2026.108079
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