Global Sequestration Potential of Increased Organic Carbon in Cropland Soils.
Global Sequestration Potential of Increased Organic Carbon in Cropland Soils.
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DOI：
10.1038/s41598-017-15794-8
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发表时间：
2017-11-14
影响因子：
4.6
通讯作者：
Verchot LV
中科院分区：
文献类型：
--
作者：
Zomer RJ;Bossio DA;Sommer R;Verchot LV
土壤有机碳在全球碳循环中的作用正受到越来越多的关注，它既是响应预测的全球温度上升的潜在的巨大且不确定的二氧化碳排放源，又是能够减少大气二氧化碳的碳的天然汇。人们普遍认为，在土壤中固碳的技术潜力是巨大的，对这种潜力的大小也有一些共识。全世界的农田每年可吸收0.90至1.85 Pg C，即“4p1000倡议：土壤促进粮食安全和气候”目标的26-53%。报告强调了北美、欧洲、印度等集约种植区和埃塞俄比亚等非洲集约种植区的重要性。土壤固碳和保护现有土壤碳储量具有包括改善粮食生产在内的多重效益，是实现《巴黎气候协定》不超过2°C全球目标的重要缓解途径。
The role of soil organic carbon in global carbon cycles is receiving increasing attention both as a potentially large and uncertain source of CO2 emissions in response to predicted global temperature rises, and as a natural sink for carbon able to reduce atmospheric CO2. There is general agreement that the technical potential for sequestration of carbon in soil is significant, and some consensus on the magnitude of that potential. Croplands worldwide could sequester between 0.90 and 1.85 Pg C/yr, i.e. 26–53% of the target of the “4p1000 Initiative: Soils for Food Security and Climate”. The importance of intensively cultivated regions such as North America, Europe, India and intensively cultivated areas in Africa, such as Ethiopia, is highlighted. Soil carbon sequestration and the conservation of existing soil carbon stocks, given its multiple benefits including improved food production, is an important mitigation pathway to achieve the less than 2 °C global target of the Paris Climate Agreement.
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