Distribution of Al, Fe, Si, and DOC between size fractions mobilised from topsoil horizons with progressing degree of podzolisation

dc.contributor.authorKrettek, Agnes
dc.contributor.authorStein, Mathias
dc.contributor.authorRennert, Thilo
dc.date.accessioned2025-06-05T14:20:26Z
dc.date.available2025-06-05T14:20:26Z
dc.date.issued2022
dc.date.updated2024-12-02T06:32:59Z
dc.description.abstractAluminium, Fe, Si, and dissolved organic C (DOC) accumulate in the subsoil of Podzols after mobilisation in the topsoil. We conducted laboratory experiments with topsoil horizons with progressing degree of podzolisation by irrigation with artificial rainwater at varying intensity and permanence. We monitored the concentrations and distribution of mobilised Al, Fe, Si, and DOC between size fractions (< 1000 Dalton, 1 kDa– < 0.45 µm, and > 0.45 µm). Total eluate concentrations were increased at the onset of the experiments and after the first irrigation interruption, indicating non-equilibrium release. There was no statistical effect of the degree of podzolisation on element concentrations. Release of Al, Fe, and DOC was mostly dominant in the fraction 1 kDa– < 0.45 µm, indicating metals complexed by larger organic molecules and colloids. Silicon released was dominantly monomeric silicic acid < 1 kDa. Particularly with the least podzolised soils, Al and Si concentrations < 1 kDa might have been controlled by short-range ordered aluminosilicates, while their transport in colloidal form was unlikely. Our study pointed to both quantitative and qualitative seasonality of element release during podzolisation, to decoupling of Al and Si release regarding size, and to different minerals that control element release as a function of the degree of podzolisation.en
dc.description.sponsorshipOpen Access funding enabled and organized by Projekt DEAL.
dc.description.sponsorshipDeutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
dc.description.sponsorshipUniversität Hohenheim (3153)
dc.identifier.swb1814302557
dc.identifier.urihttps://doi.org/10.1038/s41598-022-12616-4
dc.identifier.urihttps://hohpublica.uni-hohenheim.de/handle/123456789/16962
dc.language.isoeng
dc.rights.licensecc_by
dc.subjectBiogeochemistry
dc.subjectCarbon cycle
dc.subjectElement cycles
dc.subjectEnvironmental sciences
dc.subject.ddc630
dc.titleDistribution of Al, Fe, Si, and DOC between size fractions mobilised from topsoil horizons with progressing degree of podzolisationen
dc.type.diniArticle
dcterms.bibliographicCitationScientific reports, 12 (2022), 8384. https://doi.org/10.1038/s41598-022-12616-4. ISSN: 2045-2322
dcterms.bibliographicCitation.issn2045-2322
dcterms.bibliographicCitation.issue1
dcterms.bibliographicCitation.journaltitleScientific reports
dcterms.bibliographicCitation.originalpublishernameNature Publishing Group UK
dcterms.bibliographicCitation.volume12
local.export.bibtex@article{Krettek2022, url = {https://hohpublica.uni-hohenheim.de/handle/123456789/16962}, doi = {10.1038/s41598-022-12616-4}, author = {Krettek, Agnes and Stein, Mathias and Rennert, Thilo et al.}, title = {Distribution of Al, Fe, Si, and DOC between size fractions mobilised from topsoil horizons with progressing degree of podzolisation}, journal = {Scientific reports}, year = {2022}, volume = {12}, }
local.export.bibtexAuthorKrettek, Agnes and Stein, Mathias and Rennert, Thilo et al.
local.export.bibtexKeyKrettek2022
local.export.bibtexType@article
local.subject.sdg6
local.subject.sdg13
local.subject.sdg15
local.title.fullDistribution of Al, Fe, Si, and DOC between size fractions mobilised from topsoil horizons with progressing degree of podzolisation

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