Characterising the biophysical, economic and social impacts of soil carbon sequestration as a greenhouse gas removal technology

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dc.contributor.authorSykes, Alasdair J.
dc.contributor.authorMacleod, Michael
dc.contributor.authorEory, Vera
dc.contributor.authorRees, Robert M.
dc.contributor.authorPayen, Florian
dc.contributor.authorMyrgiotis, Vasilis
dc.contributor.authorWilliams, Mathew
dc.contributor.authorSohi, Saran
dc.contributor.authorHillier, Jon
dc.contributor.authorMoran, Dominic
dc.contributor.authorManning, David A. C.
dc.contributor.authorGoglio, Pietro
dc.contributor.authorSeghetta, Michele
dc.contributor.authorWilliams, Adrian
dc.contributor.authorHarris, Jim A.
dc.contributor.authorDondini, Marta
dc.contributor.authorWalton, Jack
dc.contributor.authorHouse, Joanna
dc.contributor.authorSmith, Pete
dc.date.accessioned2019-11-08T10:53:00Z
dc.date.available2019-11-08T10:53:00Z
dc.date.issued2019-09-18
dc.description.abstractTo limit warming to well below 2°C, most scenario projections rely on greenhouse gas removal technologies (GGRTs); one such GGRT uses soil carbon sequestration (SCS) in agricultural land. In addition to their role in mitigating climate change, SCS practices play a role in delivering agroecosystem resilience, climate change adaptability, and food security. Environmental heterogeneity and differences in agricultural practices challenge the practical implementation of SCS, and our analysis addresses the associated knowledge gap. Previous assessments have focused on global potentials, but there is a need among policy makers to operationalise SCS. Here, we assess a range of practices already proposed to deliver SCS, and distil these into a subset of specific measures. We provide a multi‐disciplinary summary of the barriers and potential incentives toward practical implementation of these measures. First, we identify specific practices with potential for both a positive impact on SCS at farm level, and an uptake rate compatible with global impact. These focus on: a. optimising crop primary productivity (e.g. nutrient optimisation, pH management, irrigation) b. reducing soil disturbance and managing soil physical properties (e.g. improved rotations, minimum till) c. minimising deliberate removal of C or lateral transport via erosion processes (e.g. support measures, bare fallow reduction) d. addition of C produced outside the system (e.g. organic manure amendments, biochar addition) e. provision of additional C inputs within the cropping system (e.g. agroforestry, cover cropping) We then consider economic and non‐cost barriers and incentives for land managers implementing these measures, along with the potential externalised impacts of implementation. This offers a framework and reference point for holistic assessment of the impacts of SCS. Finally, we summarise and discuss the ability of extant scientific approaches to quantify the technical potential and externalities of SCS measures, and the barriers and incentives to their implementation in global agricultural systems.en_UK
dc.identifier.citationSykes AJ, Macleod M, Eory V, et al., (2019) Characterising the biophysical, economic and social impacts of soil carbon sequestration as a greenhouse gas removal technology. Global Change Biology, Volume 26, Issue 3, March 2020, pp. 1085-1108en_UK
dc.identifier.cris24249489
dc.identifier.issn1354-1013
dc.identifier.urihttps://doi.org/10.1111/gcb.14844
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/14696
dc.language.isoenen_UK
dc.publisherWileyen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectSoil organic carbonen_UK
dc.subjectsequestrationen_UK
dc.subjectgreenhouse gas removalen_UK
dc.subjectnegative emissionsen_UK
dc.subjectfour per milleen_UK
dc.subjectagricultureen_UK
dc.titleCharacterising the biophysical, economic and social impacts of soil carbon sequestration as a greenhouse gas removal technologyen_UK
dc.typeArticleen_UK

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