The Gray, Green, Blue Continuum
Such solutions have the potential to integrate natural habitats, processes, and services as part of a coherent and holistic approach to water management, particularly in the urban context. They can provide multiple functions beyond conventional flood mitigation, generating a range of benefits by restoring and conserving natural capital, improving the live ability of urban spaces, increasing resilience, and contributing to more sustainable outcomes. In doing so, they can enhance overall water security by improving water availability and water quality while simultaneously reducing water-related risks and generating additional social, economic, and environmental co-benefits. Achieving these outcomes requires hybrid urban infrastructure city-wide. Such infrastructure optimizes a mix of blue, green, and gray corridors that can integrate NbS into the built urban form at a range of scales and in varying proportions. While the design and implementation of these hybrid assets are relatively well considered, their implementation at scale has been limited. This is due in part to the challenges in realizing the values associated with the full range of market and non-market benefits and comprehending the distribution of these among diverse beneficiaries. This situation makes it difficult to secure sustainable revenue streams and to internalize future returns that can be aggregated to leverage sufficient financing. As a result, improved approaches are required to identify the benefits derived from NbS, evaluate the value of these benefits and to identify the range of potential beneficiaries, to provide a framework that can facilitate co-investment in hybrid infrastructure and ultimately suitable financing models.
Main Authors: | , , , , , |
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Format: | Report biblioteca |
Language: | English |
Published: |
World Bank, Washington, DC
2021
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Subjects: | FLOOD CONTROL, URBAN FLOOD MANAGEMENT, URBAN FINANCE, |
Online Access: | http://documents.worldbank.org/curated/en/510361622787005043/The-Gray-Green-Blue-Continuum-Valuing-the-Benefit-of-Nature-Based-Solutions-for-Integrated-Urban-Flood-Management-in-China https://hdl.handle.net/10986/35687 |
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Summary: | Such solutions have the potential to
integrate natural habitats, processes, and services as part
of a coherent and holistic approach to water management,
particularly in the urban context. They can provide multiple
functions beyond conventional flood mitigation, generating a
range of benefits by restoring and conserving natural
capital, improving the live ability of urban spaces,
increasing resilience, and contributing to more sustainable
outcomes. In doing so, they can enhance overall water
security by improving water availability and water quality
while simultaneously reducing water-related risks and
generating additional social, economic, and environmental
co-benefits. Achieving these outcomes requires hybrid urban
infrastructure city-wide. Such infrastructure optimizes a
mix of blue, green, and gray corridors that can integrate
NbS into the built urban form at a range of scales and in
varying proportions. While the design and implementation of
these hybrid assets are relatively well considered, their
implementation at scale has been limited. This is due in
part to the challenges in realizing the values associated
with the full range of market and non-market benefits and
comprehending the distribution of these among diverse
beneficiaries. This situation makes it difficult to secure
sustainable revenue streams and to internalize future
returns that can be aggregated to leverage sufficient
financing. As a result, improved approaches are required to
identify the benefits derived from NbS, evaluate the value
of these benefits and to identify the range of potential
beneficiaries, to provide a framework that can facilitate
co-investment in hybrid infrastructure and ultimately
suitable financing models. |
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