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dc.contributor.authorGeorgiou, Katerina
dc.contributor.authorJackson, Robert B
dc.contributor.authorVindušková, Olga
dc.contributor.authorAbramoff, Rose Z
dc.contributor.authorAhlström, Anders
dc.contributor.authorFeng, Wenting
dc.contributor.authorHarden, Jennifer W
dc.contributor.authorPellegrini, Adam
dc.contributor.authorPolley, H Wayne
dc.contributor.authorSoong, Jennifer L
dc.contributor.authorRiley, William J
dc.contributor.authorTorn, Margaret S
dc.date.accessioned2022-07-01T15:00:28Z
dc.date.available2022-07-01T15:00:28Z
dc.date.issued2022-07-01
dc.date.submitted2022-01-20
dc.identifier.citationNature Communications, volume 13, issue 1, article-number 3797
dc.identifier.issn2041-1723
dc.identifier.others41467-022-31540-9
dc.identifier.other31540
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/338662
dc.description.abstractSoil is the largest terrestrial reservoir of organic carbon and is central for climate change mitigation and carbon-climate feedbacks. Chemical and physical associations of soil carbon with minerals play a critical role in carbon storage, but the amount and global capacity for storage in this form remain unquantified. Here, we produce spatially-resolved global estimates of mineral-associated organic carbon stocks and carbon-storage capacity by analyzing 1144 globally-distributed soil profiles. We show that current stocks total 899 Pg C to a depth of 1 m in non-permafrost mineral soils. Although this constitutes 66% and 70% of soil carbon in surface and deeper layers, respectively, it is only 42% and 21% of the mineralogical capacity. Regions under agricultural management and deeper soil layers show the largest undersaturation of mineral-associated carbon. Critically, the degree of undersaturation indicates sequestration efficiency over years to decades. We show that, across 103 carbon-accrual measurements spanning management interventions globally, soils furthest from their mineralogical capacity are more effective at accruing carbon; sequestration rates average 3-times higher in soils at one tenth of their capacity compared to soils at one half of their capacity. Our findings provide insights into the world's soils, their capacity to store carbon, and priority regions and actions for soil carbon management.
dc.languageen
dc.publisherSpringer Science and Business Media LLC
dc.subjectArticle
dc.subject/704/47/4113
dc.subject/704/106/47/4113
dc.subject/704/106/694/682
dc.subject/704/106/694/1108
dc.subject/119
dc.subject/141
dc.subjectarticle
dc.titleGlobal stocks and capacity of mineral-associated soil organic carbon.
dc.typeArticle
dc.date.updated2022-07-01T15:00:27Z
prism.publicationNameNat Commun
dc.identifier.doi10.17863/CAM.86073
dcterms.dateAccepted2022-06-09
rioxxterms.versionofrecord10.1038/s41467-022-31540-9
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidGeorgiou, Katerina [0000-0002-2819-3292]
dc.contributor.orcidJackson, Robert B [0000-0001-8846-7147]
dc.contributor.orcidVindušková, Olga [0000-0002-7060-2459]
dc.contributor.orcidAhlström, Anders [0000-0003-1642-0037]
dc.contributor.orcidFeng, Wenting [0000-0002-3189-3687]
dc.contributor.orcidPellegrini, Adam [0000-0003-0418-4129]
dc.contributor.orcidPolley, H Wayne [0000-0002-1197-8800]
dc.contributor.orcidRiley, William J [0000-0002-4615-2304]
dc.contributor.orcidTorn, Margaret S [0000-0002-8174-0099]
dc.identifier.eissn2041-1723
pubs.funder-project-idDOE | LDRD | Lawrence Livermore National Laboratory (LLNL) (21-ERD-045)
cam.issuedOnline2022-07-01


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