Trade-offs and synergies of soil carbon sequestration: Addressing knowledge gaps related to soil management strategies

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dc.contributor.authorMaenhout, Peter
dc.contributor.authorDi Bene, Claudia
dc.contributor.authorLuz Cayuela, Maria
dc.contributor.authorDiaz-Pines, Eugenio
dc.contributor.authorGovednik, Anton
dc.contributor.authorKeuper, Frida
dc.contributor.authorMavsar, Sara
dc.contributor.authorMihelic, Rok
dc.contributor.authorO'Toole, Adam
dc.contributor.authorSchwarzmann, Ana
dc.contributor.authorSuhadolc, Marjetka
dc.contributor.authorSyp, Alina
dc.contributor.authorValkama, Elena
dc.date.accessioned2024-06-11T14:14:59Z
dc.date.available2024-06-11T14:14:59Z
dc.date.issued2024
dc.description.abstractSoil organic carbon (SOC) sequestration in agricultural soils is an important tool for climate change mitigation within the EU soil strategy for 2030 and can be achieved via the adoption of soil management strategies (SMS). These strategies may induce synergistic effects by simultaneously reducing greenhouse gas (GHG) emissions and/or nitrogen (N) leaching. In contrast, other SMS may stimulate emissions of GHG such as nitrous oxide (N2O) or methane (CH4), offsetting the climate change mitigation gained via SOC sequestration. Despite the importance of understanding trade-offs and synergies for selecting sustainable SMS for European agriculture, knowledge on these effects remains limited. This review synthesizes existing knowledge, identifies knowledge gaps and provides research recommendations on trade-offs and synergies between SOC sequestration or SOC accrual, non-CO2 GHG emissions and N leaching related to selected SMS. We investigated 87 peer-reviewed articles that address SMS and categorized them under tillage management, cropping systems, water management and fertilization and organic matter (OM) inputs. SMS, such as conservation tillage, adapted crop rotations, adapted water management, OM inputs by cover crops (CC), organic amendments (OA) and biochar, contribute to increase SOC stocks and reduce N leaching. Adoption of leguminous CC or specific cropping systems and adapted water management tend to create tradeoffs by stimulating N2O emissions, while specific cropping systems or application of biochar can mitigate N2O emissions. The effect of crop residues on N2O emissions depends strongly on their C/N ratio. Organic agriculture and agroforestry clearly mitigate CH4 emissions but the impact of other SMS requires additional study. More experimental research is needed to study the impact of both the pedoclimatic conditions and the long-term dynamics of trade-offs and synergies. Researchers should simultaneously assess the impact of (multiple) agricultural SMS on SOC stocks, GHG emissions and N leaching. This review provides guidance to policymakers as well as a framework to design field experiments and model simulations, which can address knowledge gaps and non-intentional effects of applying agricultural SMS meant to increase SOC sequestration.
dc.description.sponsorshipThis research fits in the scope of the project Sommit— sustainable management of soil organic matter to mitigate trade-offs between C sequestration and nitrous oxide, methane and nitrate losses. That project received funding from European Unions’ Horizon 2020 Research and Innovation Programme under grant agreement No. 862695EJPSOIL EJP SOIL. Funding acquisition: Peter Maenhout, Claudia Di Bene, Maria Luz Cayuela, Eugenio Diaz-Pines, Frida Keuper, Rok Mihelic, Adam O'Toole, Marjetka Suhadolc, Alina Syp and Elena Valkama. Eugenio Diaz-Pines received funds from the Austrian Climate and Energy Fund (‘ACRP11— CASAS—KR18AC0K14633’).
dc.identifier.citationEur J Soil Sci. 2024;75:e13515
dc.identifier.doi10.1111/ejss.13515
dc.identifier.issnOnline: 1365-2389. Print: 1351-0754
dc.identifier.urihttps://bc.iung.pl/handle/123456789/1259
dc.language.isoen
dc.publisherJohn Wiley & Sons Ltd
dc.subjectCH4
dc.subjectclimate change mitigation
dc.subjectconservation agriculture
dc.subjectcropping systems
dc.subjectEJP SOIL
dc.subjectN2O
dc.subjectnitrogen leaching
dc.subjectorganic matter inputs
dc.subjecttillage
dc.subjectwater management
dc.titleTrade-offs and synergies of soil carbon sequestration: Addressing knowledge gaps related to soil management strategies
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