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Modelling soil organic carbon in Danish agricultural soils suggests low potential for future carbon sequestration

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  • Taghizadeh-Toosi, Arezoo
  • Olesen, Jørgen E.

Abstract

Soil organic carbon (SOC) is in active exchange with the atmosphere. The amount of organic carbon (OC) input into the soil and SOC turnover rate are important for predicting the carbon (C) sequestration potential of soils subject to changes in land-use and climate. The C-TOOL model was developed to simulate the dynamics of SOC storage on medium- to long-term trends in the whole soil profile (0–100cm), and was used to compare SOC changes under typical Danish farming conditions for two sites in Denmark having the greatest possible temperature differences for the period 1986 and 2012. For this purpose, various agricultural management scenarios were considered including characteristic crop rotations with and without the presence of cover crops, and the application of organic amendments. We compared these simulated management effects with management effects estimated from Danish SOC monitoring network over the same period of time. The results of the C-TOOL simulations demonstrated that application of organic manure, use of cover crop, and converting the croplands to grassland had the potential to increase SOC in Danish mineral soils. The simulated data also suggested that C-TOOL gave a reasonably good account of SOC changes when compared with measured SOC values from a Danish national monitoring network, and the simulated management effects agree well with results of long-term experimental trials. The estimates show rather small potential for increasing SOC in Danish cropping systems, even when there is conversion to rotations with more grasslands or the use of cover crops is increased.

Suggested Citation

  • Taghizadeh-Toosi, Arezoo & Olesen, Jørgen E., 2016. "Modelling soil organic carbon in Danish agricultural soils suggests low potential for future carbon sequestration," Agricultural Systems, Elsevier, vol. 145(C), pages 83-89.
  • Handle: RePEc:eee:agisys:v:145:y:2016:i:c:p:83-89
    DOI: 10.1016/j.agsy.2016.03.004
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    References listed on IDEAS

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    1. Taghizadeh-Toosi, Arezoo & Christensen, Bent T. & Hutchings, Nicholas J. & Vejlin, Jonas & Kätterer, Thomas & Glendining, Margaret & Olesen, Jørgen E., 2014. "C-TOOL: A simple model for simulating whole-profile carbon storage in temperate agricultural soils," Ecological Modelling, Elsevier, vol. 292(C), pages 11-25.
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    Cited by:

    1. Baral, Khagendra R. & Jégo, Guillaume & Amon, Barbara & Bol, Roland & Chantigny, Martin H. & Olesen, Jørgen E. & Petersen, Søren O., 2018. "Greenhouse gas emissions during storage of manure and digestates: Key role of methane for prediction and mitigation," Agricultural Systems, Elsevier, vol. 166(C), pages 26-35.
    2. Henrik B. Møller & Peter Sørensen & Jørgen E. Olesen & Søren O. Petersen & Tavs Nyord & Sven G. Sommer, 2022. "Agricultural Biogas Production—Climate and Environmental Impacts," Sustainability, MDPI, vol. 14(3), pages 1-24, February.
    3. Xingfu Wang & Xianfei Huang & Jiwei Hu & Zhenming Zhang, 2020. "The Spatial Distribution Characteristics of Soil Organic Carbon and Its Effects on Topsoil under Different Karst Landforms," IJERPH, MDPI, vol. 17(8), pages 1-19, April.
    4. Glenk, Klaus & Shrestha, Shailesh & Topp, Cairstiona F.E. & Sánchez, Berta & Iglesias, Ana & Dibari, Camilla & Merante, Paolo, 2017. "A farm level approach to explore farm gross margin effects of soil organic carbon management," Agricultural Systems, Elsevier, vol. 151(C), pages 33-46.
    5. Fernández-Getino, A.P. & Alonso-Prados, J.L. & Santín-Montanyá, M.I., 2018. "Challenges and prospects in connectivity analysis in agricultural systems: Actions to implement policies on land management and carbon storage at EU level," Land Use Policy, Elsevier, vol. 71(C), pages 146-159.

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