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Trade-offs and synergies of soil carbon sequestration : addressing knowledge gaps related to soil management strategies
ID Maenhout, Peter (Author), ID Govednik, Anton (Author), ID Mavsar, Sara (Author), ID Mihelič, Rok (Author), ID Schwarzmann, Ana (Author), ID Suhadolc, Marjetka (Author), ID Valkama, Elena (Author), et al.

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Abstract
Soil organic carbon (SOC) sequestration in agricultural soils is an importanttool for climate change mitigation within the EU soil strategy for 2030 and canbe achieved via the adoption of soil management strategies (SMS). These strategies may induce synergistic effects by simultaneously reducing greenhousegas (GHG) emissions and/or nitrogen (N) leaching. In contrast, other SMS maystimulate emissions of GHG such as nitrous oxide (N$_2$O) or methane (CH$_4$),offsetting the climate change mitigation gained via SOC sequestration. Despitethe importance of understanding trade-offs and synergies for selecting sustain-able SMS for European agriculture, knowledge on these effects remains lim-ited. This review synthesizes existing knowledge, identifies knowledge gapsand provides research recommendations on trade-offs and synergies betweenSOC sequestration or SOC accrual, non-CO$_2$ GHG emissions and N leachingrelated to selected SMS. We investigated 87 peer-reviewed articles that addressSMS and categorized them under tillage management, cropping systems, watermanagement and fertilization and organic matter (OM) inputs. SMS, such as conservation tillage, adapted crop rotations, adapted water management, OMinputs by cover crops (CC), organic amendments (OA) and biochar, contributeto increase SOC stocks and reduce N leaching. Adoption of leguminous CC orspecific cropping systems and adapted water management tend to create trade-offs by stimulating N$_2$O emissions, while specific cropping systems or application of biochar can mitigate N$_2$O emissions. The effect of crop residues on N$_2$O emissions depends strongly on their C/N ratio. Organic agriculture and agro-forestry clearly mitigate CH$_4$ emissions but the impact of other SMS requiresadditional study. More experimental research is needed to study the impact ofboth the pedoclimatic conditions and the long-term dynamics of trade-offs andsynergies. Researchers should simultaneously assess the impact of (multiple)agricultural SMS on SOC stocks, GHG emissions and N leaching. This reviewprovides guidance to policymakers as well as a framework to design fieldexperiments and model simulations, which can address knowledge gaps andnon-intentional effects of applying agricultural SMS meant to increase SOC sequestration.

Language:English
Keywords:CH$_4$, climate change mitigation, conservation agriculture, cropping systems, EJP SOIL, N$_2$O, nitrogen leaching, organic matter inputs, tillage, water management
Work type:Article
Typology:1.02 - Review Article
Organization:BF - Biotechnical Faculty
Publication status:Published
Publication version:Version of Record
Year:2024
Number of pages:21 str.
Numbering:Vol. 75, Iss. 3, art. e13515
PID:20.500.12556/RUL-158446 This link opens in a new window
UDC:631.4
ISSN on article:1351-0754
DOI:10.1111/ejss.13515 This link opens in a new window
COBISS.SI-ID:198370819 This link opens in a new window
Publication date in RUL:10.06.2024
Views:346
Downloads:36
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Record is a part of a journal

Title:European journal of soil science
Shortened title:Eur. j. soil sci.
Publisher:Wiley
ISSN:1351-0754
COBISS.SI-ID:52063488 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Keywords:pedologija, tla, trajnostno gospodarjenje s tlemi, ohranitveno kmetijstvo, blažitev klimatskih sprememb, izpiranje dušika, obdelava tal, upravljanje z vodami

Projects

Funder:EC - European Commission
Funding programme:Horizon 2020 Research and Innovation Program
Project number:862695EJPSOIL
Name:∑ommit - sustainable management of soil organic matter to mitigate trade-offs between C sequestration and nitrousoxide, methane and nitrate losses

Funder:Other - Other funder or multiple funders
Funding programme:Austrian climate and energy fund
Project number:ACRP11—CASAS— KR18AC0K14633

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