Management-induced changes in soil organic carbon on global croplands

dc.bibliographicCitation.firstPage5125
dc.bibliographicCitation.issue21
dc.bibliographicCitation.journalTitleBiogeoscienceseng
dc.bibliographicCitation.lastPage5149
dc.bibliographicCitation.volume19
dc.contributor.authorKarstens, Kristine
dc.contributor.authorBodirsky, Benjamin Leon
dc.contributor.authorDietrich, Jan Philipp
dc.contributor.authorDondini, Marta
dc.contributor.authorHeinke, Jens
dc.contributor.authorKuhnert, Matthias
dc.contributor.authorMüller, Christoph
dc.contributor.authorRolinski, Susanne
dc.contributor.authorSmith, Pete
dc.contributor.authorWeindl, Isabelle
dc.contributor.authorLotze-Campen, Hermann
dc.contributor.authorPopp, Alexander
dc.date.accessioned2023-02-13T09:38:03Z
dc.date.available2023-02-13T09:38:03Z
dc.date.issued2022
dc.description.abstractSoil organic carbon (SOC), one of the largest terrestrial carbon (C) stocks on Earth, has been depleted by anthropogenic land cover change and agricultural management. However, the latter has so far not been well represented in global C stock assessments. While SOC models often simulate detailed biochemical processes that lead to the accumulation and decay of SOC, the management decisions driving these biophysical processes are still little investigated at the global scale. Here we develop a spatially explicit data set for agricultural management on cropland, considering crop production levels, residue returning rates, manure application, and the adoption of irrigation and tillage practices. We combine it with a reduced-complexity model based on the Intergovernmental Panel on Climate Change (IPCC) tier 2 method to create a half-degree resolution data set of SOC stocks and SOC stock changes for the first 30 cm of mineral soils. We estimate that, due to arable farming, soils have lost around 34.6 GtC relative to a counterfactual hypothetical natural state in 1975. Within the period 1975-2010, this SOC debt continued to expand by 5 GtC (0.14 GtCyr-1) to around 39.6 GtC. However, accounting for historical management led to 2.1 GtC fewer (0.06 GtCyr-1) emissions than under the assumption of constant management. We also find that management decisions have influenced the historical SOC trajectory most strongly by residue returning, indicating that SOC enhancement by biomass retention may be a promising negative emissions technique. The reduced-complexity SOC model may allow us to simulate management-induced SOC enhancement - also within computationally demanding integrated (land use) assessment modeling.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/11418
dc.identifier.urihttp://dx.doi.org/10.34657/10452
dc.language.isoeng
dc.publisherKatlenburg-Lindau [u.a.] : Copernicus
dc.relation.doihttps://doi.org/10.5194/bg-19-5125-2022
dc.relation.essn1726-4189
dc.rights.licenseCC BY 4.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.subject.ddc570
dc.subject.ddc550
dc.subject.otheragricultural landeng
dc.subject.otheragricultural managementeng
dc.subject.othercarbon sequestrationeng
dc.subject.othercrop productioneng
dc.subject.otherglobal changeeng
dc.subject.otherIntergovernmental Panel on Climate Changeeng
dc.subject.otherland covereng
dc.subject.othersoil carboneng
dc.subject.othertrajectoryeng
dc.titleManagement-induced changes in soil organic carbon on global croplandseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccess
wgl.contributorPIK
wgl.subjectBiowissenschaften/Biologieger
wgl.subjectGeowissenschaftenger
wgl.typeZeitschriftenartikelger
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
bg-19-5125-2022.pdf
Size:
6.25 MB
Format:
Adobe Portable Document Format
Description: