A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Exploring trade-offs among the multiple benefits of green-blue-grey infrastructure for urban flood mitigation
Climate change is presenting one of the main challenges to our planet. In parallel, all regions of the world are projected to urbanise further. Consequently, sustainable development challenges will be increasingly concentrated in cities. A resulting impact is the increment of expected urban flood risk in many areas around the globe. Adaptation to climate change is an opportunity to improve urban conditions through the implementation of green-blue infrastructures, which provide multiple benefits besides flood mitigation. However, this is not an easy task since urban drainage systems are complex structures. This work focuses on a method to analyse the trade-offs when different benefits are pursued in stormwater infrastructure planning. A hydrodynamic model was coupled with an evolutionary optimisation algorithm to evaluate different green-blue-grey measures combinations. This evaluation includes flood mitigation as well as the enhancement of co-benefits. We confirmed optimisation as a helpful decision-making tool to visualise trade-offs among flood management strategies. Our results show that considering co-benefits enhancement as an objective boosts the selection of green-blue infrastructure. However, flood mitigation effectiveness can be diminished when extra benefits are pursued. Finally, we proved that combining green-blue-grey measures is particularly important in urban spaces when several benefits are considered simultaneously.
Exploring trade-offs among the multiple benefits of green-blue-grey infrastructure for urban flood mitigation
Climate change is presenting one of the main challenges to our planet. In parallel, all regions of the world are projected to urbanise further. Consequently, sustainable development challenges will be increasingly concentrated in cities. A resulting impact is the increment of expected urban flood risk in many areas around the globe. Adaptation to climate change is an opportunity to improve urban conditions through the implementation of green-blue infrastructures, which provide multiple benefits besides flood mitigation. However, this is not an easy task since urban drainage systems are complex structures. This work focuses on a method to analyse the trade-offs when different benefits are pursued in stormwater infrastructure planning. A hydrodynamic model was coupled with an evolutionary optimisation algorithm to evaluate different green-blue-grey measures combinations. This evaluation includes flood mitigation as well as the enhancement of co-benefits. We confirmed optimisation as a helpful decision-making tool to visualise trade-offs among flood management strategies. Our results show that considering co-benefits enhancement as an objective boosts the selection of green-blue infrastructure. However, flood mitigation effectiveness can be diminished when extra benefits are pursued. Finally, we proved that combining green-blue-grey measures is particularly important in urban spaces when several benefits are considered simultaneously.
Exploring trade-offs among the multiple benefits of green-blue-grey infrastructure for urban flood mitigation
Alida Alves (author) / Zoran Vojinovic (author) / Zoran Kapelan (author) / Arlex Sanchez (author) / Berry Gersonius (author)
2020-02-10
oai:zenodo.org:3760609
Science of The Total Environment
Article (Journal)
Electronic Resource
English
DDC:
710
Evaluating Trade-Offs in Ecosystem Services for Blue–Green–Grey Infrastructure Planning
| DOAJ | 2023
Green and grey drainage infrastructure: costs and benefits of reducing surface water flood risk
| BASE | 2023
Retrofitting urban drainage infrastructure: green or grey?
| Taylor & Francis Verlag | 2018
Evaluating Flood Risk Reduction by Urban Blue-Green Infrastructure Using Insurance Data
| British Library Online Contents | 2019