Brief

Delivering Transformative Change and Multiple Benefits

The evidence base of nature-based solutions and ecosystem-based adaptation

When well designed, nature-based solutions (NbS) and ecosystem-based adaptation (EbA) can enhance biodiversity, strengthen climate resilience, and contribute to the achievement of the Sustainable Development Goals (SDGs). This brief provides updated, state-of-the-art summary and analysis on the potential of NbS to deliver transformative change and multiple benefits, as well as policy recommendations for scaling up their implementation and support.

By Jeffrey Qi, Anika Terton, Nicole Jang on October 22, 2025

Key Messages

  • Well-designed and implemented NbS and EbA projects show promising results in delivering transformative change by enabling shifts in views, structures, and practices that help address the root causes of biodiversity loss and climate vulnerabilities.

  • A growing body of knowledge and evidence base demonstrates the value of NbS and EbA as integrated solutions that can address multiple environmental challenges while simultaneously delivering a range of co-benefits for sustainable development and human well-being.

  • Creating an enabling policy environment is essential for scaling up NbS and EbA, including the systematic integration of NbS in development, climate, and biodiversity strategies, as well as inclusive governance structures and the availability of adequate, long-term financial resources.

Nature-based solutions harness the power of nature to help reduce greenhouse gas emissions, strengthen resilience, protect biodiversity and ecosystems, and deliver human well-being benefits to people and communities. Over the last decade, policy-makers and practitioners have increasingly turned to NbS to address the interconnected crises of climate change and biodiversity degradation and deliver transformative change. EbA, which is a subset of NbS, focuses on using biodiversity and ecosystem services to help communities adapt to climate change. 

With an increasing number of global assessments, studies, and reports on the effectiveness of NbS and EbA, this brief provides updated, state-of-the-art summary and analysis of the latest science–policy interface assessments and relevant reports related to NbS and EbA. 

The brief is structured into three sections: 

  1. The first section outlines the potential of NbS to deliver transformative change by enabling shifts in underlying views, structures, and practices, helping to address the root causes of biodiversity loss and climate vulnerabilities.
  2. The second section outlines the evidence base on the effectiveness of NbS and EbA. When well designed, NbS and EbA can function as integrated and cost-effective approaches that enhance biodiversity, strengthen climate resilience, and contribute to the achievement of the SDGs. They provide multiple benefits in the areas of climate change adaptation, climate change mitigation, biodiversity conservation, human well-being, resilience, and economic benefits.
  3. The last section provides a set of recommendations for scaling up the implementation and support of NbS and EbA, emphasizing the need to integrate and mainstream NbS and EbA in policy-making and finance and to ensure diverse and just stakeholder representation. 

The brief is targeted toward policy-makers and practitioners involved in the development, planning, and financing of climate change and biodiversity policy, programs, and projects, as well as negotiators involved in the United Nations Framework Convention on Climate Change and the Convention on Biological Diversity processes. It was developed by Deutsche Gesellschaft für Internationale Zusammenarbeit and the International Institute for Sustainable Development on behalf of the German Ministry for the Environment, Climate Action, Nature Conservation and Nuclear Safety under its International Climate Initiative.

Brief details

Topic
Climate Change Adaptation
Climate Change Mitigation
Nature-Based Solutions
Project
Advancing Synergies Between Biodiversity and Climate Change Policy
Impact area
Climate
Nature
Publisher
Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ)
Copyright
Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ), 2025