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Effects of profit-driven cropland expansion and conservation policies

Author

Listed:
  • Julia M. Schneider

    (Ludwig-Maximilians-Universität München)

  • Ruth Delzeit

    (University of Basel)

  • Christian Neumann

    (Helmholtz-Centre for Environmental Research)

  • Tobias Heimann

    (Kiel Institute for the World Economy)

  • Ralf Seppelt

    (Helmholtz-Centre for Environmental Research
    Martin Luther University Halle-Wittenberg
    German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig)

  • Franziska Schuenemann

    (University of Hohenheim)

  • Mareike Söder

    (Johann Heinrich von Thünen Institute)

  • Wolfram Mauser

    (Ludwig-Maximilians-Universität München)

  • Florian Zabel

    (Ludwig-Maximilians-Universität München
    University of Basel)

Abstract

Biodiversity protection and climate change mitigation require understanding of the potential trade-offs from possible future cropland expansion. Here we apply an interdisciplinary coupled modelling approach to identify areas under the globally highest expansion pressure of 1% to 30% future cropland expansion by 2030. On the basis of recent projections, we analyse the potential impacts on agricultural markets, biodiversity and CO2 land-use emissions of a 3.6% global cropland expansion scenario by 2030. We assess how global conservation policies could shift expansion pressure and alter the ensuing impacts. Our results confirm that the areas under pressure are located mainly in the tropics. A cropland expansion of 3.6% increases global agricultural production by 2%. The associated land-use change generates 17.1 Gt CO2 emissions and leads to a further decline in biodiversity intactness of 26% in the expanded areas. Conservation policies prohibiting the expansion into forests, wetlands and existing protected areas could substantially reduce emissions from land-use change, maintaining global agricultural productivity, but might have contrary effects on biodiversity. Strategic land-use planning could help reconcile agricultural production with environmental protection. The map of areas under expansion pressure presented here could contribute to improving the spatial planning of conservation measures.

Suggested Citation

  • Julia M. Schneider & Ruth Delzeit & Christian Neumann & Tobias Heimann & Ralf Seppelt & Franziska Schuenemann & Mareike Söder & Wolfram Mauser & Florian Zabel, 2024. "Effects of profit-driven cropland expansion and conservation policies," Nature Sustainability, Nature, vol. 7(10), pages 1335-1347, October.
  • Handle: RePEc:nat:natsus:v:7:y:2024:i:10:d:10.1038_s41893-024-01410-x
    DOI: 10.1038/s41893-024-01410-x
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