How to measure, report and verify soil carbon change to realise the potential of soil carbon sequestration for atmospheric greenhouse gas removal
2020
Smith, Pete | Soussana, Jean-François | Angers, Denis | Schipper, Louis | Chenu, Claire | Rasse, Daniel P. | Batjes, Niels H. | van Egmond, Fenny | Mcneill, Stephen | Kuhnert, Matthias | Arias Navarro, Cristina | Olesen, Jorgen E. | Chirinda, Ngonidzashe | Fornara, Dario | Wollenberg, Eva | Sanz‐cobena, Alberto | Klumpp, Katja | University of Aberdeen | Unité Mixte de Recherche sur l'Ecosystème Prairial - UMR (UREP) ; VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Agriculture and Agri-Food (AAFC) | University of Waikato [Hamilton] | Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS) ; AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Norsk institutt for bioøkonomi=Norwegian Institute of Bioeconomy Research (NIBIO) | World Soil Information (ISRIC) | Manaaki Whenua – Landcare Research [Lincoln] | Aarhus University [Aarhus] | International Center for Tropical Agriculture [Colombie] (CIAT) ; Consultative Group on International Agricultural Research [CGIAR] (CGIAR) | Agri Food and Biosciences Institute | University of Vermont [Burlington] | Universidad Politécnica de Madrid (UPM) | ANR-17-EGAS-0003,ResidueGas,Improved estimation and mitigation of nitrous oxide emissions and soil carbon storage from crop residues(2017) | European Project: 774378,H2020-SFS-2016-2017,H2020-SFS-2017-1,CIRCASA(2017)
International audience
Mostrar más [+] Menos [-]Inglés. There is growing international interest in better managing soils to increase soil organic carbon content to contribute to climate change mitigation, to enhance resilience to climate change and to underpin food security, through initiatives such as international “4p1000″ initiative and the FAO's Global assessment of soil organic carbon sequestration potential (GSOCseq) programme. Since soil organic carbon content of soils cannot be easily measured, a key barrier to implementing programmes to increase soil organic carbon at large scale, is the need for credible and reliable measurement/monitoring, reporting and verification (MRV) platforms, both for national reporting and for emissions trading. Without such platforms, investments could be considered risky. In this paper we review methods and challenges of measuring SOC change directly in soils, before examining some recent novel developments that show promise for quantifying SOC. We describe how repeat soil surveys are used to estimate changes in SOC over time, and how long‐term experiments and space‐for‐time‐substitution sites can serve as sources of knowledge and can be used to test models, and as potential benchmark sites in global frameworks to estimate SOC change. We briefly consider models that can be used to simulate and project change in SOC and examine the MRV platforms for soil organic carbon change already in use in various countries / regions. In the final section, we bring together the various components described in this review, to describe a new vision for a global framework for MRV of soil organic carbon change, to support national and international initiatives seeking to effect change in the way we manage our soils.
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