Biogeosciences
Biogeosciences
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Articles | Volume 22, issue 22
Articles | Volume 22, issue 22
https://doi.org/10.5194/bg-22-7337-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-7337-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 22
Research article
 | 
27 Nov 2025
Research article |  | 27 Nov 2025

Parent material geochemistry – and not plant biomass – as the key factor shaping soil organic carbon stocks in European alpine grasslands

Annina Maier, Maria E. Macfarlane, Marco Griepentrog, and Sebastian Doetterl

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Short summary
A systematic analysis of the interaction between pedo- and biosphere in shaping alpine soil organic carbon (SOC) stocks remains missing. Our regional-scale study of alpine SOC stocks across five parent materials shows that plant biomass stock is not a strong control of SOC stocks. Rather, the greatest SOC stocks are linked to more weathered soil profiles with higher Fe and Al pedogenic oxide content, showing the importance of parent material weatherability and geochemistry for SOC stabilization.
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