Abstract
Natural climate solutions (NCS) play a critical role in climate change mitigation. NCS can generate win–win co-benefits for biodiversity and human well-being, but they can also involve trade-offs (co-impacts). However, the massive evidence base on NCS co-benefits and possible trade-offs is poorly understood. We employ large language models to assess over 2 million published journal articles, primarily written in English, finding 257,266 relevant studies on NCS co-impacts. Using machine learning methods to extract data (for example, study ___location, species and other key variables), we create a global evidence map on NCS co-impacts. We find that global evidence on NCS co-impacts has grown approximately tenfold in three decades, and some of the most abundant evidence relates to NCS that have lower mitigation potential. Studies often examine multiple NCS, indicating some natural complementarities. Finally, we identify countries with high carbon mitigation potential but a relatively weak body of evidence on NCS co-impacts. Through effective methods and systematic and representative data on NCS co-impacts, we provide timely insights to inform NCS-related research and action globally.
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Data availability
All data and materials used in the analysis are available at our GitHub repository at https://github.com/lexunit-ai/ncs-evidence-map.
Code availability
Code used for this study is available at our GitHub repository at https://github.com/lexunit-ai/ncs-evidence-map.
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Acknowledgements
We are grateful to J. Levine, W. Petry, B. Griscom, F. Seymour, C. Girardin, L. Olander, N. Deshmukh and several others for their thoughtful feedback, as well as attendees at various presentations that strengthened our analysis and manuscript. We thank D. Lovas for technical contributions that greatly enhanced the manuscript. The findings and conclusions in this publication are those of the authors and should not be construed to represent any official USDA or US government determination or policy. Funding from the Bezos Earth Fund and other donors supporting The Nature Conservancy benefited this project48,49,71,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98.
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C.H.C., B.E.R., J.T.E., L.L., Y.J.M., I.M., D.P. and P.F. conceived the idea for the manuscript, generated new methods and performed the research. C.H.C., B.E.R., J.T.E., Y.J.M., I.M., D.P. and S.C.-P. performed data analysis and modelling, generated figures and tables, and drafted sections of the manuscript. A.R.T., S.C.-P., R.I.M., T.G., J.P.H., P.W.E., E.E.P., T.K., S.H.C., P.W., S.A.W., M.C., L.S.S., K.G.A. and P.F. performed critical reviews. Y.J.M., E.E.P., J.T.E. and R.I.M. obtained funding.
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Chang, C.H., Erbaugh, J.T., Fajardo, P. et al. Global evidence of human well-being and biodiversity impacts of natural climate solutions. Nat Sustain 8, 75–85 (2025). https://doi.org/10.1038/s41893-024-01454-z
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DOI: https://doi.org/10.1038/s41893-024-01454-z