Söderström, Bo2; Hedlund, Katarina3; Jackson, Louise E.4; Kätterer, Thomas5; Lugato, Emanuele6; Thomsen, Ingrid Kaag7; Jørgensen, Helene Bracht3
1 Department of Agroecology - Soil Fertility, Department of Agroecology, Science and Technology, Aarhus University2 Mistra Council for Evidence-Based Environmental Management, Royal Swedish3 Department of Biology, Lund University4 Department of Land, Air and Water Resources, University of California5 Department Ecology, SLU, Uppsala6 Joint Research Centre, Land Resource, Institute for Environment & Sustainability7 Department of Agroecology - Soil Fertility, Department of Agroecology, Science and Technology, Aarhus University
Changes in soil organic carbon (SOC) stocks significantly influence the atmospheric C concentration. Agricultural management practices that increase SOC stocks thus may have profound effects on climate mitigation. Additional benefits include higher soil fertility since increased SOC stocks improve the physical and biological properties of the soil. Intensification of agriculture and land-use change from grasslands to croplands are generally known to deplete SOC stocks. The depletion is exacerbated through agricultural practices with low return of organic material and various mechanisms, such as oxidation/mineralization, leaching and erosion. However, a systematic review comparing the efficacy of different agricultural management practices to increase SOC stocks has not yet been produced. Since there are diverging views on this matter, a systematic review would be timely for framing policies not only nationally in Sweden, but also internationally, for promoting long-term sustainable management of soils and mitigating climate change.