Understanding the Value and Limits of Nature-Based Solutions to Climate Change and Other Global Challenges

Nathalie Seddon, Alexandre Chausson, Pam Berry, Cécile A. J. Girardin, Alison Smith and Beth Turner
Created: 4/14/2021 -

Abstract

There is growing awareness that ‘nature-based solutions' (NbS) can help to protect us from climate change impacts while slowing further warming, supporting biodiversity and securing ecosystem services. However, the potential of NbS to provide the intended benefits has not been rigorously assessed. There are concerns over their reliability and cost-effectiveness compared to engineered alternatives, and their resilience to climate change. Trade-offs can arise if climate mitigation policy encourages NbS with low biodiversity value, such as afforestation with non-native monocultures. This can result in maladaptation, especially in a rapidly changing world where biodiversity-based resilience and multi-functional landscapes are key. Here, we highlight the rise of NbS in climate policy—focusing on their potential for climate change adaptation as well as mitigation—and discuss barriers to their evidence-based implementation. We outline the major financial and governance challenges to implementing NbS at scale, highlighting avenues for further research. As climate policy turns increasingly towards greenhouse gas removal approaches such as afforestation, we stress the urgent need for natural and social scientists to engage with policy makers. They must ensure that NbS can achieve their potential to tackle both the climate and biodiversity crisis while also contributing to sustainable development. This will require systemic change in the way we conduct research and run our institutions.

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Keywords

Adaptation Phase
Assessment
Scale
Multilateral / Transboundary
Sector Addressed
Biodiversity
Policy
Type of Adaptation Action/Strategy
Natural Resource Management / Conservation
Other
Capacity Building
Conduct / Gather additional research, data, and products
Create/enhance resources and tools
Infrastructure, Planning, and Development
Make infrastructure resistant or resilient to climate change
Governance and Policy
Create new or enhance existing policies or regulations
Target Climate Changes and Impacts
Air temperature
Temperature
Biodiversity
Erosion
Fire
Flooding
Precipitation
Sea level rise
Storms or extreme weather events
Region
International