Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15547 |
Feasibility of the 4 per 1000 aspirational target for soil carbon: A case study for France | |
Manuel P. Martin; Bassem Dimassi; Mercedes Romá; n Dobarco; Bertrand Guenet; Dominique Arrouays; Denis A. Angers; Fabrice Blache; Fré; dé; ric Huard; Jean‐; Franç; ois Soussana; Sylvain Pellerin | |
2021-04-08 | |
发表期刊 | Global Change Biology
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出版年 | 2021 |
英文摘要 | Increasing soil organic carbon (SOC) stocks is a promising way to mitigate the increase in atmospheric CO2 concentration. Based on a simple ratio between CO2 anthropogenic emissions and SOC stocks worldwide, it has been suggested that a 0.4% (4 per 1000) yearly increase in SOC stocks could compensate for current anthropogenic CO2 emissions. Here, we used a reverse RothC modelling approach to estimate the amount of C inputs to soils required to sustain current SOC stocks and to increase them by 4‰ per year over a period of 30 years. We assessed the feasibility of this aspirational target first by comparing the required C input with net primary productivity (NPP) flowing to the soil, and second by considering the SOC saturation concept. Calculations were performed for mainland France, at a 1 km grid cell resolution. Results showed that a 30%–40% increase in C inputs to soil would be needed to obtain a 4‰ increase per year over a 30‐year period. 88.4% of cropland areas were considered unsaturated in terms of mineral‐associated SOC, but characterized by a below target C balance, that is, less NPP available than required to reach the 4‰ aspirational target. Conversely, 90.4% of unimproved grasslands were characterized by an above target C balance, that is, enough NPP to reach the 4‰ objective, but 59.1% were also saturated. The situation of improved grasslands and forests was more evenly distributed among the four categories (saturated vs. unsaturated and above vs below target C balance). Future data from soil monitoring networks should enable to validate these results. Overall, our results suggest that, for mainland France, priorities should be (1) to increase NPP returns in cropland soils that are unsaturated and have a below target carbon balance and (2) to preserve SOC stocks in other land uses. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/321966 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Manuel P. Martin,Bassem Dimassi,Mercedes Romá,et al. Feasibility of the 4 per 1000 aspirational target for soil carbon: A case study for France[J]. Global Change Biology,2021. |
APA | Manuel P. Martin.,Bassem Dimassi.,Mercedes Romá.,n Dobarco.,Bertrand Guenet.,...&Sylvain Pellerin.(2021).Feasibility of the 4 per 1000 aspirational target for soil carbon: A case study for France.Global Change Biology. |
MLA | Manuel P. Martin,et al."Feasibility of the 4 per 1000 aspirational target for soil carbon: A case study for France".Global Change Biology (2021). |
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