Taylor, L.L., Beerling, D.J., Quegan, S. et al. (1 more author) (2017) Simulating carbon capture by enhanced weathering with global croplands: an overview of key processes highlighting areas of future model development. Biology Letters, 13 (4). ISSN 1744-9561
Abstract
Enhanced weathering (EW) aims to amplify a natural sink for CO2 by incorporating powdered silicate rock with high reactive surface area into agricultural soils. The goal is to achieve rapid dissolution of minerals and release of alkalinity with accompanying dissolution of CO2 into soils and drainage waters. EW could counteract phosphorus limitation and greenhouse gas (GHG) emissions in tropical soils, and soil acidification, a common agricultural problem studied with numerical process models over several decades. Here, we review the processes leading to soil acidification in croplands and how the soil weathering CO2 sink is represented in models. Mathematical models capturing the dominant processes and human interventions governing cropland soil chemistry and GHG emissions neglect weathering, while most weathering models neglect agricultural processes. We discuss current approaches to modelling EW and highlight several classes of model having the potential to simulate EW in croplands. Finally, we argue for further integration of process knowledge in mathematical models to capture feedbacks affecting both longer-term CO2 consumption and crop growth and yields.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
Keywords: | enhanced weathering; soil acidification; numerical modelling; carbon sequestration; climate change |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Biosciences (Sheffield) > Department of Animal and Plant Sciences (Sheffield) The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) |
Funding Information: | Funder Grant number EUROPEAN RESEARCH COUNCIL CDREG - 322998 LEVERHULME TRUST (THE) UNSPECIFIED LEVERHULME TRUST (THE) RC-2015-029 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 21 Apr 2017 12:05 |
Last Modified: | 21 Apr 2017 12:05 |
Published Version: | https://doi.org/10.1098/rsbl.2016.0868 |
Status: | Published |
Publisher: | Royal Society, The |
Refereed: | Yes |
Identification Number: | 10.1098/rsbl.2016.0868 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:115234 |