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The land–energy–water nexus of global bioenergy potentials from abandoned cropland

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  • Jan Sandstad Næss

    (Norwegian University of Science and Technology)

  • Otavio Cavalett

    (Norwegian University of Science and Technology)

  • Francesco Cherubini

    (Norwegian University of Science and Technology)

Abstract

Bioenergy is a key option in climate change mitigation scenarios. Growing perennial grasses on recently abandoned cropland is a near-term strategy for gradual bioenergy deployment with reduced risks for food security and the environment. However, the extent of global abandoned cropland, bioenergy potentials and management requirements are unclear. Here we integrate satellite-derived land cover maps with a yield model to investigate the land–energy–water nexus of global bioenergy potentials. We identified 83 million hectares of abandoned cropland between 1992 and 2015, corresponding to 5% of today’s cropland area. Bioenergy potentials are 6–39 exajoules per year (11–68% of today’s bioenergy demand), depending on multiple local and management factors. About 20 exajoules per year can be achieved by increasing today’s global cropland area and water use by 3% and 8%, respectively, and without production inside biodiversity hotspots or irrigation in water-scarce areas. The consideration of context-specific practices and multiple environmental dimensions can mitigate trade-offs of bioenergy deployment.

Suggested Citation

  • Jan Sandstad Næss & Otavio Cavalett & Francesco Cherubini, 2021. "The land–energy–water nexus of global bioenergy potentials from abandoned cropland," Nature Sustainability, Nature, vol. 4(6), pages 525-536, June.
    • Handle: RePEc:nat:natsus:v:4:y:2021:i:6:d:10.1038_s41893-020-00680-5
    DOI: 10.1038/s41893-020-00680-5
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    Cited by:

    1. Jingmeng Wang & Wei Li & Philippe Ciais & Laurent Z. X. Li & Jinfeng Chang & Daniel Goll & Thomas Gasser & Xiaomeng Huang & Narayanappa Devaraju & Olivier Boucher, 2021. "Global cooling induced by biophysical effects of bioenergy crop cultivation," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    2. Zhao Li & Philippe Ciais & Jonathon S. Wright & Yong Wang & Shu Liu & Jingmeng Wang & Laurent Z. X. Li & Hui Lu & Xiaomeng Huang & Lei Zhu & Daniel S. Goll & Wei Li, 2023. "Increased precipitation over land due to climate feedback of large-scale bioenergy cultivation," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    3. Chris B. Zou & Lixia H. Lambert & Josh Everett & Rodney E. Will, 2022. "Response of Surface Runoff and Sediment to the Conversion of a Marginal Grassland to a Switchgrass ( Panicum virgatum ) Bioenergy Feedstock System," Land, MDPI, vol. 11(4), pages 1-15, April.
    4. Qiming Zheng & Tim Ha & Alexander V. Prishchepov & Yiwen Zeng & He Yin & Lian Pin Koh, 2023. "The neglected role of abandoned cropland in supporting both food security and climate change mitigation," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    5. Weng, Yuwei & Cai, Wenjia & Wang, Can, 2021. "Evaluating the use of BECCS and afforestation under China’s carbon-neutral target for 2060," Applied Energy, Elsevier, vol. 299(C).
    6. Vera, Ivan & Wicke, Birka & Lamers, Patrick & Cowie, Annette & Repo, Anna & Heukels, Bas & Zumpf, Colleen & Styles, David & Parish, Esther & Cherubini, Francesco & Berndes, Göran & Jager, Henriette & , 2022. "Land use for bioenergy: Synergies and trade-offs between sustainable development goals," Renewable and Sustainable Energy Reviews, Elsevier, vol. 161(C).

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