EGU23-7372, updated on 26 Feb 2024
EGU General Assembly 2023
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

TRUESOIL Project: Understanding Trade-offs and Dynamic Interactions between SOC Stocks and GHG Emissions for Climate Smart Agrisoil Management

Antonios Apostolakis1, Paulina Englert1, Peter Dörsch2, Oslan Jumadi3, Ibrahim Khalil4,8, Katja Klumpp5, Sergio Morales6, Chukwuebuka Christopher Okolo7, Bruce Osborne8, Jorge Perez-Quezada9, Mari Philatie10, Gabriela Posse11, Ileana Frasier11, Silvina Restovich11, Penélope Serrano-Ortiz12, Sigrid Trier Kjær2, Pauliina Turunen10, Bas van Wesemael13, Frank Verheijen14, Ana Meijide1, and the Antonios Apostolakis*
Antonios Apostolakis et al.
  • 1University of Göttingen, Crop Science, Göttingen, Germany
  • 2Norwegian University of Life Sciences, Norway
  • 3Universitas Negeri Makassar, Indonesia
  • 4Prudence College Dublin, Ireland
  • 5National Research Institute for Agriculture and Environment, France
  • 6University of Otago, New Zealand
  • 7Jimma University Ethiopia, Ethiopia
  • 8University College Dublin, Ireland
  • 9University of Chile, Chile
  • 10University of Helsinki, Finland
  • 11Instituto Nacional de Tecnología Agropecuaria, Argentina
  • 12Universidad de Granada, Spain
  • 133Université Catholique de Louvain, Belgien
  • 14University of Aveiro, Portugal
  • *A full list of authors appears at the end of the abstract

According to the Paris Agreement 2015, increased carbon sequestration by soils is a vital option for climate change mitigation and, simultaneously, improves soil health and food security. Agricultural soils are globally depleted in soil organic carbon and, therefore, exhibit a high potential for carbon sequestration. Various agroecological practices aim to increase or maintain soil organic carbon through increasing carbon inputs in the soil (e.g., amendments, plant residues, cover crops) and/or through reducing carbon losses (e.g., reduced or no tillage, adapted grazing). However, these practices have the potential to increase greenhouse gas emissions, which limits their effectiveness in terms of climate change mitigation.

The EJP-SOIL project TRUESOIL (2022-2025) studies trade-offs between agricultural management practices aiming at increasing carbon sequestration and reducing greenhouse gas emissions from agroecosystems across crops, soil properties and climates. TRUESOIL investigates biotic and abiotic drivers of soil organic carbon dynamics and greenhouse gas emissions under field conditions in experimental croplands and grasslands in 13 countries and five continents, covering broad environmental and pedogenic gradients. Further, TRUESOIL investigates the impact of experimental droughts under rainout shelters on crop yields, soil organic carbon pools and greenhouse gas emissions. The project will improve the mechanistic understanding of soil organic matter and greenhouse gas interactions and predict trade-offs between management-induced soil organic carbon changes and greenhouse gas emissions under future climatic conditions. Finally, laboratory incubations will address the role of microbial community composition as shaped by agricultural management in soil organic matter stabilization and nutrients turnover.

TRUESOIL moves beyond bulk soil organic carbon stocks and studies the operational carbon pools of particulate and mineral-associated organic matter. While multiple greenhouse gases are targeted, a focus is given on N2O due to its high warming potential and its relative uncertainty in flux calculations compared to CH4 and CO2 gases. Spanning from boreal to tropical climates, TRUESOIL sites cover a mean annual temperature range from 6 to 27°C and a precipitation range from 300 to 1150 mm. Similarly, soil organic carbon concentrations ranged from 1% to 10% with some sites greatly depleted in soil organic carbon, while others not and without signs of carbon saturation. Based on its wide geographical coverage, the TRUESOIL project will provide recommendations on management measures relevant to multiple stakeholders, from farmers to policy makers.

Antonios Apostolakis:

Apostolakis Antonios1, Englert Paulina1, Münter Christiane1, Dörsch Peter2, Jumadi Oslan3, Khalil Ibrahim4,8, Klumpp Katja5, Morales Sergio6, Chukwuebuka Christopher Okolo7, Osborne Bruce8, Perez-Quezada Jorge9, Philatie Mari10, Posse Gabriela11, Frasier Ileana11, Restovich Silvina11, Serrano-Ortiz Penélope12, Kjær Sigrid Trier2, Turunen Pauliina10, van Wesemael Bas13, Verheijen Frank14, Meijide Ana1

How to cite: Apostolakis, A., Englert, P., Dörsch, P., Jumadi, O., Khalil, I., Klumpp, K., Morales, S., Okolo, C. C., Osborne, B., Perez-Quezada, J., Philatie, M., Posse, G., Frasier, I., Restovich, S., Serrano-Ortiz, P., Kjær, S. T., Turunen, P., van Wesemael, B., Verheijen, F., and Meijide, A. and the Antonios Apostolakis: TRUESOIL Project: Understanding Trade-offs and Dynamic Interactions between SOC Stocks and GHG Emissions for Climate Smart Agrisoil Management, EGU General Assembly 2023, Vienna, Austria, 23–28 Apr 2023, EGU23-7372,, 2023.