nam 22 uu 4500 dbt_mods_00060326 10.1111/gcb.17024 doi dbt_mods_00060326 ger DE-601 rda eng 550 sdnb Bramble, De Shorn E. Author aut Max‐Planck‐Institute for Biogeochemistry Jena Germany Department of Hydrogeology, Institute for Geosciences Friedrich Schiller University Jena Jena Germany Formation of mineral‐associated organic matter in temperate soils is primarily controlled by mineral type and modified by land use and management intensity Bramble, De Shorn E.;Ulrich, Susanne;Schöning, Ingo;Mikutta, Robert;Brandt, Luise;Poll, Christian;Kandeler, Ellen;Mikutta, Christian;Konrad, Alexander;Siemens, Jan;Yang, Yang;Polle, Andrea;Schall, Peter;Ammer, Christian;Kaiser, Klaus;Schrumpf, Marion 2023-12-08 19 Seiten text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Zweitveröffentlichung Abstract Formation of mineral‐associated organic matter (MAOM) supports the accumulation and stabilization of carbon (C) in soil, and thus, is a key factor in the global C cycle. Little is known about the interplay of mineral type, land use and management intensity in MAOM formation, especially on subdecadal time scales. We exposed mineral containers with goethite or illite, the most abundant iron oxide and phyllosilicate clay in temperate soils, for 5 years in topsoils of 150 forest and 150 grassland sites in three regions across Germany. Results show that irrespective of land use and management intensity, more C accumulated on goethite than illite (on average 0.23 ± 0.10 and 0.06 ± 0.03 mg m −2 mineral surface respectively). Carbon accumulation across regions was consistently higher in coniferous forests than in deciduous forests and grasslands. Structural equation models further showed that thinning and harvesting reduced MAOM formation in forests. Formation of MAOM in grasslands was not affected by grazing. Fertilization had opposite effects on MAOM formation, with the positive effect being mediated by enhanced plant productivity and the negative effect by reduced plant species richness. This highlights the caveat of applying fertilizers as a strategy to increase soil C stocks in temperate grasslands. Overall, we demonstrate that the rate and amount of MAOM formation in soil is primarily driven by mineral type, and can be modulated by land use and management intensity even on subdecadal time scales. Our results suggest that temperate soils dominated by oxides have a higher capacity to accumulate and store C than those dominated by phyllosilicate clays, even under circumneutral pH conditions. Therefore, adopting land use and management practices that increase C inputs into oxide‐rich soils that are under their capacity to store C may offer great potential to enhance near‐term soil C sequestration. fertilization forests grasslands grazing iron oxides and clay minerals soil organic matter thinning and harvesting tree species selection article Ulrich, Susanne Author aut Soil Science and Soil Protection Martin Luther University Halle‐Wittenberg Halle (Saale) Germany Schöning, Ingo Author aut Max‐Planck‐Institute for Biogeochemistry Jena Germany Mikutta, Robert Author aut Soil Science and Soil Protection Martin Luther University Halle‐Wittenberg Halle (Saale) Germany Brandt, Luise Author aut Department of Soil Biology, Institute of Soil Science and Land Evaluation University of Hohenheim Stuttgart Germany Poll, Christian Author aut Department of Soil Biology, Institute of Soil Science and Land Evaluation University of Hohenheim Stuttgart Germany Kandeler, Ellen Author aut Department of Soil Biology, Institute of Soil Science and Land Evaluation University of Hohenheim Stuttgart Germany Mikutta, Christian Author aut Soil Mineralogy, Institute of Mineralogy Gottfried Wilhelm Leibnitz University Hannover Hannover Germany Konrad, Alexander Author aut Institute of Soil Science and Soil Conservation, iFZ Research Center for BioSystems, Land Use and Nutrition Justus Liebig University Giessen Giessen Germany Siemens, Jan Author aut Institute of Soil Science and Soil Conservation, iFZ Research Center for BioSystems, Land Use and Nutrition Justus Liebig University Giessen Giessen Germany Yang, Yang Author aut Department of Forest Botany and Tree Physiology Georg August University Göttingen Göttingen Germany Polle, Andrea Author aut Department of Forest Botany and Tree Physiology Georg August University Göttingen Göttingen Germany Schall, Peter Author aut Department of Silviculture and Forest Ecology of the Temperate Zones Georg August University Göttingen Göttingen Germany Ammer, Christian Author aut Department of Silviculture and Forest Ecology of the Temperate Zones Georg August University Göttingen Göttingen Germany Kaiser, Klaus Author aut Soil Science and Soil Protection Martin Luther University Halle‐Wittenberg Halle (Saale) Germany Schrumpf, Marion Author aut Max‐Planck‐Institute for Biogeochemistry Jena Germany Friedrich-Schiller-Universität Jena Chemisch-Geowissenschaftliche Fakultät host institution his 30:1:e17024 Glob. 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