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Climate adaptation by crop migration

Author

Listed:
  • Lindsey L. Sloat

    (Colorado State University
    Colorado State University)

  • Steven J. Davis

    (University of California)

  • James S. Gerber

    (University of Minnesota)

  • Frances C. Moore

    (University of California)

  • Deepak K. Ray

    (University of Minnesota)

  • Paul C. West

    (University of Minnesota)

  • Nathaniel D. Mueller

    (Colorado State University
    Colorado State University)

Abstract

Many studies have estimated the adverse effects of climate change on crop yields, however, this literature almost universally assumes a constant geographic distribution of crops in the future. Movement of growing areas to limit exposure to adverse climate conditions has been discussed as a theoretical adaptive response but has not previously been quantified or demonstrated at a global scale. Here, we assess how changes in rainfed crop area have already mediated growing season temperature trends for rainfed maize, wheat, rice, and soybean using spatially-explicit climate and crop area data from 1973 to 2012. Our results suggest that the most damaging impacts of warming on rainfed maize, wheat, and rice have been substantially moderated by the migration of these crops over time and the expansion of irrigation. However, continued migration may incur substantial environmental costs and will depend on socio-economic and political factors in addition to land suitability and climate.

Suggested Citation

  • Lindsey L. Sloat & Steven J. Davis & James S. Gerber & Frances C. Moore & Deepak K. Ray & Paul C. West & Nathaniel D. Mueller, 2020. "Climate adaptation by crop migration," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15076-4
    DOI: 10.1038/s41467-020-15076-4
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