Choosing the right nature-based solutions to meet diverse urban challenges

Thami Croeser*, Georgia Garrard, Roshan Sharma, Alessandro Ossola, Sarah Bekessy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Increasing focus on Nature-Based Solutions (NBS) in cities has significantly expanded the range of applications in which urban nature is considered useful, as well as the range of NBS available. Traditional parks, gardens and street trees now sit alongside innovative approaches including rooftop pollinator habitats, constructed wetlands and hydroponic green facades, each of which has its own particular challenges and benefits. This variety of solutions introduces an important new decision-making challenge for cities wishing to implement NBS: choosing the right set of specific NBS interventions.

Decision support tools such as Multi-Criteria Decision Analysis (MCDA) can help navigate complex decisions, but their application to urban NBS selection decisions has been limited. Current NBS assessment frameworks tend to either give highly aggregated results, or are tailored to only one specific ecosystem service. Here we demonstrate a novel application of MCDA to the practical challenge of selecting a set of NBS to address multiple urban challenges. The MCDA tool developed here was used in seven cities participating in the European Union project ‘Urban GreenUP’. We describe the development and use of the MCDA tool, and explore how cities used the tool to guide NBS selection. We also evaluate the tool using sensitivity analysis and feedback from users.

We find that participating cities are seeking to balance a large number of possible benefits from NBS solutions, and the tool proved useful for navigating the selection decision. Users identified opportunities to improve the tool's usability and clarity. They also noted a key strength of the tool as a prompt for co-production of knowledge and decisions. Collectively, these findings advance the design and application of tools to support complex decisions about selecting NBS to address diverse urban challenges.

Original languageEnglish
Article number127337
Pages (from-to)1-11
Number of pages11
JournalUrban Forestry and Urban Greening
Volume65
DOIs
Publication statusPublished - Nov 2021

Bibliographical note

Copyright the Author(s) 2021. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • Coproduction
  • Decision support
  • Forestry
  • MCDA
  • Multi criteria decision analysis
  • Nature based solutions
  • NBS
  • Urban greening
  • Urban

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