22 Sep 2017
22 Sep 2017
Ideas and perspectives: Can we use the soil carbon saturation deficit to quantitatively assess the soil carbon storage potential, or should we explore other strategies?
- 1Laboratoire de Géologie de l'ENS, PSL Research University, UMR8538 du CNRS, 24 rue Lhomond, 75231 Paris, France
- 2Quebec Research and Development Centre. Agriculture and Agri-Food Canada, 2560 Boul. Hochelaga, Québec, Québec, GIV 2J3 Canada
- 3Aix-Marseille Université, CNRS, IRD, Coll France, INRA, CEREGE, F-13545 Aix-en-Provence, France
- 4ADEME, Direction Productions et Energies Durables, 20 av. du Grésillé, 49000 Angers, France
- 5Université Grenoble Alpes, IRSTEA, 2 rue de la Papeterie, 38402, St-Martin-d'Hères, France
- 6UMR ECOSYS, INRA-AgroParisTech, Université Paris-Saclay AgroParisTech, 78850 Thiverval-Grignon, France
- 7UMR ECO&SOLS, IRD, Campus SupAgro, 34060 Montpellier Cedex 2, France
- 8Biogéochimie des Ecosystèmes Forestiers, INRA, 54280 Champenoux, France
- 9UMR ISPA, INRA, 33883 Villenave d'Ornon Cédex, France
- 1Laboratoire de Géologie de l'ENS, PSL Research University, UMR8538 du CNRS, 24 rue Lhomond, 75231 Paris, France
- 2Quebec Research and Development Centre. Agriculture and Agri-Food Canada, 2560 Boul. Hochelaga, Québec, Québec, GIV 2J3 Canada
- 3Aix-Marseille Université, CNRS, IRD, Coll France, INRA, CEREGE, F-13545 Aix-en-Provence, France
- 4ADEME, Direction Productions et Energies Durables, 20 av. du Grésillé, 49000 Angers, France
- 5Université Grenoble Alpes, IRSTEA, 2 rue de la Papeterie, 38402, St-Martin-d'Hères, France
- 6UMR ECOSYS, INRA-AgroParisTech, Université Paris-Saclay AgroParisTech, 78850 Thiverval-Grignon, France
- 7UMR ECO&SOLS, IRD, Campus SupAgro, 34060 Montpellier Cedex 2, France
- 8Biogéochimie des Ecosystèmes Forestiers, INRA, 54280 Champenoux, France
- 9UMR ISPA, INRA, 33883 Villenave d'Ornon Cédex, France
Abstract. An increase in soil organic carbon stock can contribute to mitigate climate change. International negotiation mechanisms and initiatives call for countries to consider land use change and soil management to achieve atmospheric CO2 removal through storage in terrestrial systems (http://4p1000.org/). As a result, policy makers raised a specific operational question to the soil science community: how much and at which annual rate additional carbon can be stored in soils in different locations? It has been suggested that the ability of a soil to store additional organic carbon can be estimated from its carbon saturation deficit (Csat-def), which is defined as the difference between the maximum amount of carbon that can be associated to its fine (< 20 µm) fraction and the current amount of carbon associated to its fine fraction. In this opinion paper, we explain why, for conceptual reasons, the soil Csat-def is not appropriate, at least in its present form, for assessing quantitatively the whole-soil (total) organic carbon storage potential for operational purposes. We then propose alternative approaches based on new opportunities offered by the development of national and international soil monitoring programs (possibly coupled with modelling) that can provide quantitatively relevant estimates of soil total carbon storage potential. This pragmatic approach will require a sustained effort to maintain and develop soil monitoring programs worldwide and research allowing proper use of such a large amount of data.
Pierre Barré et al.


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RC1: 'Ideas (?) and perspectives (?)', Anonymous Referee #1, 24 Sep 2017
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AC1: 'Response to the comments of Reviewer 1', Pierre Barré, 28 Sep 2017
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AC1: 'Response to the comments of Reviewer 1', Pierre Barré, 28 Sep 2017
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RC2: 'Terminology? Progress?', Anonymous Referee #2, 06 Oct 2017
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AC2: 'Response to the comments of Reviewer 2', Pierre Barré, 20 Oct 2017
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AC2: 'Response to the comments of Reviewer 2', Pierre Barré, 20 Oct 2017


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RC1: 'Ideas (?) and perspectives (?)', Anonymous Referee #1, 24 Sep 2017
-
AC1: 'Response to the comments of Reviewer 1', Pierre Barré, 28 Sep 2017
-
AC1: 'Response to the comments of Reviewer 1', Pierre Barré, 28 Sep 2017
-
RC2: 'Terminology? Progress?', Anonymous Referee #2, 06 Oct 2017
-
AC2: 'Response to the comments of Reviewer 2', Pierre Barré, 20 Oct 2017
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AC2: 'Response to the comments of Reviewer 2', Pierre Barré, 20 Oct 2017
Pierre Barré et al.
Pierre Barré et al.
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Cited
11 citations as recorded by crossref.
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- National estimation of soil organic carbon storage potential for arable soils: A data-driven approach coupled with carbon-landscape zones S. Chen et al. 10.1016/j.scitotenv.2019.02.249
- The 4 per 1000 goal and soil carbon storage under agroforestry and conservation agriculture systems in sub-Saharan Africa M. Corbeels et al. 10.1016/j.still.2018.02.015
- Depth-dependent response of soil aggregates and soil organic carbon content to long-term elevated CO2 in a temperate grassland soil L. Keidel et al. 10.1016/j.soilbio.2018.05.005
- Pyrogenic carbon capture and storage H. Schmidt et al. 10.1111/gcbb.12553
- Fine silt and clay content is the main factor defining maximal C and N accumulations in soils: a meta-analysis F. Matus 10.1038/s41598-021-84821-6
- Effects of Management and Hillside Position on Soil Organic Carbon Stratification in Mediterranean Centenary Olive Grove J. Aguilera-Huertas et al. 10.3390/agronomy11040650
- Fine resolution map of top- and subsoil carbon sequestration potential in France S. Chen et al. 10.1016/j.scitotenv.2018.02.209
- Soil organic carbon was more strongly linked with soil phosphate fixing capacity than with clay content across 20,000 agricultural soils in Japan: a potential role of reactive aluminum revealed by soil database approach K. Matsui et al. 10.1080/00380768.2021.1902750
- Soil sciences and the French 4 per 1000 Initiative—The promises of underground carbon J. Kon Kam King et al. 10.1016/j.erss.2018.06.024