Key Laboratory for Plant Diversity and Biogeography of East Asia (KLPB), Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, Yunnan, China.
The Nature Conservatory (TNC), Santa Cruz, California, USA.
Sci Rep. 2017 Nov 14;7(1):15554. doi: 10.1038/s41598-017-15794-8.
The role of soil organic carbon in global carbon cycles is receiving increasing attention both as a potentially large and uncertain source of CO emissions in response to predicted global temperature rises, and as a natural sink for carbon able to reduce atmospheric CO. 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.
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，因为它可能是一个巨大而不确定的 CO 排放源，以应对预测的全球气温上升，同时也是一个能够减少大气 CO 的自然碳汇。人们普遍认为，土壤固碳的技术潜力是巨大的，而且对这种潜力的大小也有一定的共识。全世界的农田每年可固碳 0.90 到 1.85 Pg C/yr，即占“4p1000 倡议：土壤保障粮食安全和气候”目标的 26-53%。强调了北美、欧洲、印度等集约化耕作地区以及埃塞俄比亚等非洲集约化耕作地区的重要性。土壤碳固存和保护现有的土壤碳储量具有多重益处，包括提高粮食产量，是实现《巴黎气候协定》全球气温升幅低于 2°C 目标的重要缓解途径。
