Urban settlements often experience various environmental challenges and risks pertaining to water management, for instance floods and poor water quality, which enhance population susceptibility and impair the urban sustainability. These challenges are anticipated to be aggravated with industrialization, urban expansion, unsustainable land-use practices coupled with climatic variability, resulting in more frequent and intense hydrological weather events. Floods cause direct or indirect loss to lives, property and environment. A shift towards achieving resilience in urban flooding has proven to be a substantial challenge, especially when considering the bulk density of population and limited socioeconomic resources, thereof, exerting radical pressure on restricted available space. Over the past few decades, NBs have emerged as a multifaceted prospective strategy for not only efficient and cost-effective management of urban flooding but also delivering a myriad of ecosystem services including management of water resources, provisioning of habitat, biodiversity conservation, climate resilience, and ultimately fostering human prosperity. NBs provide robust and sustainable alternatives by incorporating natural aspects and processes into urban planning and development for mitigating adverse outcomes of floods, for example soil erosion, sedimentation, loss of vegetative cover and water pollution by managing surface runoff quality and quantity. However, firm evidences of the effectiveness of NBs in flood risk reduction is still unexploited to address the ongoing challenges and barriers halting their comprehensive application in urban settings. This chapter provides an insight about various types of NBs and their role in improving flood resilience and urban sustainability along with discussing the chief advantages and limitations of NBs implementation in urban areas.

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Nature-Based Solutions: A Prospective Strategy in Pluvial Flood Management

  • Sana Khalid,
  • Asifa Alam

摘要

Urban settlements often experience various environmental challenges and risks pertaining to water management, for instance floods and poor water quality, which enhance population susceptibility and impair the urban sustainability. These challenges are anticipated to be aggravated with industrialization, urban expansion, unsustainable land-use practices coupled with climatic variability, resulting in more frequent and intense hydrological weather events. Floods cause direct or indirect loss to lives, property and environment. A shift towards achieving resilience in urban flooding has proven to be a substantial challenge, especially when considering the bulk density of population and limited socioeconomic resources, thereof, exerting radical pressure on restricted available space. Over the past few decades, NBs have emerged as a multifaceted prospective strategy for not only efficient and cost-effective management of urban flooding but also delivering a myriad of ecosystem services including management of water resources, provisioning of habitat, biodiversity conservation, climate resilience, and ultimately fostering human prosperity. NBs provide robust and sustainable alternatives by incorporating natural aspects and processes into urban planning and development for mitigating adverse outcomes of floods, for example soil erosion, sedimentation, loss of vegetative cover and water pollution by managing surface runoff quality and quantity. However, firm evidences of the effectiveness of NBs in flood risk reduction is still unexploited to address the ongoing challenges and barriers halting their comprehensive application in urban settings. This chapter provides an insight about various types of NBs and their role in improving flood resilience and urban sustainability along with discussing the chief advantages and limitations of NBs implementation in urban areas.