Depth dependence of soil organic carbon additional storage capacity in different soil types by the 2050 target for carbon neutrality
<p>Land planning projects aiming to maximize soil organic carbon (SOC) stocks are increasing in number and scope, often in line with the objective to reach carbon neutrality by 2050. In response, a rising number of studies assesses where additional SOC could be stored over regional to global s...
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Copernicus Publications
2025-02-01
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| Series: | SOIL |
| Online Access: | https://soil.copernicus.org/articles/11/149/2025/soil-11-149-2025.pdf |
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| author | C. Chirol C. Chirol G. Séré P.-O. Redon C. Chenu D. Derrien D. Derrien |
| author_facet | C. Chirol C. Chirol G. Séré P.-O. Redon C. Chenu D. Derrien D. Derrien |
| author_sort | C. Chirol |
| collection | DOAJ |
| description | <p>Land planning projects aiming to maximize soil organic carbon (SOC) stocks are increasing in number and scope, often in line with the objective to reach carbon neutrality by 2050. In response, a rising number of studies assesses where additional SOC could be stored over regional to global spatial scales. In order to provide realistic values transferrable beyond the scientific community, studies providing targets of SOC accrual should consider the timescales needed to reach them, taking into consideration the effects of C inputs, soil type, and depth on soil C dynamics.</p>
<p>This research was conducted in a 320 km<span class="inline-formula"><sup>2</sup></span> territory in north-eastern France, where eight contrasted soil types have been identified, characterized, and mapped thanks to a high density of fully described soil profiles. Continuous profiles of SOC stocks were interpolated for each soil type and land use (cropland, grassland, or forest). We defined potential targets for SOC accrual using percentile boundary lines and used a linear model of depth-dependent C dynamics to explore the C inputs necessary to reach those targets within 25 years. We also used values from the literature to model C input scenarios and provided maps of SOC stocks, maximum SOC accrual, and realistic SOC accrual over 25 years.</p>
<p>SOC stocks and maximum SOC accrual are highly heterogenous over the region of study. Median SOC stocks range from 78–333 tC ha<span class="inline-formula"><sup>−1</sup></span>. Maximum SOC accrual varies from 19 tC ha<span class="inline-formula"><sup>−1</sup></span> in forested Leptosols to 197 tC ha<span class="inline-formula"><sup>−1</sup></span> in grassland Gleysols. The simulated realistic SOC accrual over 25 years in the whole region of study was one-fifth of the the maximum SOC accrual. Further consideration of depth-dependent SOC dynamics in different soil types is therefore needed to provide targets of SOC storage over timescales relevant to public policies aiming to approach carbon neutrality by 2050.</p> |
| format | Article |
| id | doaj-art-40a34813d16c4d0ea5ba5c45c2793da0 |
| institution | Kabale University |
| issn | 2199-3971 2199-398X |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Copernicus Publications |
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| series | SOIL |
| spelling | doaj-art-40a34813d16c4d0ea5ba5c45c2793da02025-02-05T11:30:29ZengCopernicus PublicationsSOIL2199-39712199-398X2025-02-011114917410.5194/soil-11-149-2025Depth dependence of soil organic carbon additional storage capacity in different soil types by the 2050 target for carbon neutralityC. Chirol0C. Chirol1G. Séré2P.-O. Redon3C. Chenu4D. Derrien5D. Derrien6Université de Lorraine, INRAE, LSE, 54000 Nancy, FranceINRAE, AgroParisTech, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes, Palaiseau, FranceUniversité de Lorraine, INRAE, LSE, 54000 Nancy, FranceAndra, Direction Scientifique & Technologique, Centre de Meuse/Haute-Marne, 55290 Bure, FranceINRAE, AgroParisTech, Ecologie fonctionnelle et écotoxicologie des agroécosystèmes, Palaiseau, FranceINRAE, Institut Agro, SAS, 35000 Rennes, FranceINRAE, Centre de Nancy, Biogéochimie des Ecosystèmes Forestiers, 54280 Champenoux, France<p>Land planning projects aiming to maximize soil organic carbon (SOC) stocks are increasing in number and scope, often in line with the objective to reach carbon neutrality by 2050. In response, a rising number of studies assesses where additional SOC could be stored over regional to global spatial scales. In order to provide realistic values transferrable beyond the scientific community, studies providing targets of SOC accrual should consider the timescales needed to reach them, taking into consideration the effects of C inputs, soil type, and depth on soil C dynamics.</p> <p>This research was conducted in a 320 km<span class="inline-formula"><sup>2</sup></span> territory in north-eastern France, where eight contrasted soil types have been identified, characterized, and mapped thanks to a high density of fully described soil profiles. Continuous profiles of SOC stocks were interpolated for each soil type and land use (cropland, grassland, or forest). We defined potential targets for SOC accrual using percentile boundary lines and used a linear model of depth-dependent C dynamics to explore the C inputs necessary to reach those targets within 25 years. We also used values from the literature to model C input scenarios and provided maps of SOC stocks, maximum SOC accrual, and realistic SOC accrual over 25 years.</p> <p>SOC stocks and maximum SOC accrual are highly heterogenous over the region of study. Median SOC stocks range from 78–333 tC ha<span class="inline-formula"><sup>−1</sup></span>. Maximum SOC accrual varies from 19 tC ha<span class="inline-formula"><sup>−1</sup></span> in forested Leptosols to 197 tC ha<span class="inline-formula"><sup>−1</sup></span> in grassland Gleysols. The simulated realistic SOC accrual over 25 years in the whole region of study was one-fifth of the the maximum SOC accrual. Further consideration of depth-dependent SOC dynamics in different soil types is therefore needed to provide targets of SOC storage over timescales relevant to public policies aiming to approach carbon neutrality by 2050.</p>https://soil.copernicus.org/articles/11/149/2025/soil-11-149-2025.pdf |
| spellingShingle | C. Chirol C. Chirol G. Séré P.-O. Redon C. Chenu D. Derrien D. Derrien Depth dependence of soil organic carbon additional storage capacity in different soil types by the 2050 target for carbon neutrality SOIL |
| title | Depth dependence of soil organic carbon additional storage capacity in different soil types by the 2050 target for carbon neutrality |
| title_full | Depth dependence of soil organic carbon additional storage capacity in different soil types by the 2050 target for carbon neutrality |
| title_fullStr | Depth dependence of soil organic carbon additional storage capacity in different soil types by the 2050 target for carbon neutrality |
| title_full_unstemmed | Depth dependence of soil organic carbon additional storage capacity in different soil types by the 2050 target for carbon neutrality |
| title_short | Depth dependence of soil organic carbon additional storage capacity in different soil types by the 2050 target for carbon neutrality |
| title_sort | depth dependence of soil organic carbon additional storage capacity in different soil types by the 2050 target for carbon neutrality |
| url | https://soil.copernicus.org/articles/11/149/2025/soil-11-149-2025.pdf |
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