Articles | Volume 11, issue 2
https://doi.org/10.5194/soil-11-715-2025
https://doi.org/10.5194/soil-11-715-2025
Original research article
 | 
01 Oct 2025
Original research article |  | 01 Oct 2025

A simple model of the turnover of organic carbon in a soil profile: model test, parameter identification and sensitivity

Elsa Coucheney, Anke Marianne Herrmann, and Nicholas Jarvis

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Cited articles

Ahrens, B., Braakhekke, M., Guggenberger, G., Schrumpf, M., and Reichstein, M.: Contribution of sorption, DOC transport and microbial interactions to the 14C age of a soil organic carbon profile: Insights from a calibrated process model, Soil. Biol. Biochem., 88, 390–402, https://doi.org/10.1016/j.soilbio.2015.06.008, 2015. 
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Balesdent, J. and Mariotti, A.: Natural 13C abundance as a tracer for studies of soil organic matter dynamics, Soil. Biol. Biochem., 19, 25–30, https://doi.org/10.1016/0038-0717(87)90120-9, 1987. 
Balesdent, J., Basile-Doelsch, I., Chadoeuf, J., Cornu, S., Derrien, D., Fekiakova, Z., and Hatté, C.: Atmosphere-soil carbon transfer as a function of soil depth, Nature, 559, 599–602, https://doi.org/10.1038/s41586-018-0328-3, 2018. 
Batjes, N.: Total carbon and nitrogen in the soils of the world, Eur. J. Soil Sci., 47, 151–163, https://doi.org/10.1111/ejss.12114_2, 1996. 
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Short summary
Simulation models can be used to evaluate changes in soil organic carbon (SOC) stocks in agricultural soils that are important to soil health and climate change mitigation. We describe a simple model that considers SOC turnover in a soil profile regulated by two processes: physical protection due to aggregation and microbial energy limitation. It accurately reproduces trends in SOC in plots receiving different OC inputs and matches survey data on SOC in the soil profile in one region of Sweden.
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