气候变化领域集成服务门户(CCPortal): Global stocks and capacity of mineral-associated soil organic carbon

CCPortal

DOI	10.1038/s41467-022-31540-9
	Global stocks and capacity of mineral-associated soil organic carbon
	Georgiou, Katerina; Jackson, Robert B.; Vinduskova, Olga; Abramoff, Rose Z.; Ahlstrom, Anders; Feng, Wenting; Harden, Jennifer W.; Pellegrini, Adam F. A.; Polley, H. Wayne; Soong, Jennifer L.; Riley, William J.; Torn, Margaret S.
发表日期	2022
EISSN	2041-1723
卷号	13 期号:1
英文摘要	Soil is the largest terrestrial reservoir of organic carbon and is central for climate change mitigation and carbon-climate feedbacks. Chemical and physical associations of soil carbon with minerals play a critical role in carbon storage, but the amount and global capacity for storage in this form remain unquantified. Here, we produce spatially-resolved global estimates of mineral-associated organic carbon stocks and carbon-storage capacity by analyzing 1144 globally-distributed soil profiles. We show that current stocks total 899 Pg C to a depth of 1 m in non-permafrost mineral soils. Although this constitutes 66% and 70% of soil carbon in surface and deeper layers, respectively, it is only 42% and 21% of the mineralogical capacity. Regions under agricultural management and deeper soil layers show the largest undersaturation of mineral-associated carbon. Critically, the degree of undersaturation indicates sequestration efficiency over years to decades. We show that, across 103 carbon-accrual measurements spanning management interventions globally, soils furthest from their mineralogical capacity are more effective at accruing carbon; sequestration rates average 3-times higher in soils at one tenth of their capacity compared to soils at one half of their capacity. Our findings provide insights into the world's soils, their capacity to store carbon, and priority regions and actions for soil carbon management. Mineral-organic associations play a key role in soil carbon preservation. Here, Georgiou et al. produce global estimates of mineral-associated soil carbon, providing insight into the world's soils and their capacity to store carbon
语种	英语
WOS研究方向	Multidisciplinary Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000819790100018
来源期刊	NATURE COMMUNICATIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280699
作者单位	United States Department of Energy (DOE); Lawrence Livermore National Laboratory; Stanford University; Stanford University; Stanford University; University of Antwerp; Charles University Prague; CEA; Centre National de la Recherche Scientifique (CNRS); Universite Paris Saclay; United States Department of Energy (DOE); Oak Ridge National Laboratory; Lund University; Chinese Academy of Agricultural Sciences; United States Department of the Interior; United States Geological Survey; University of Cambridge; University of Cambridge; United States Department of Agriculture (USDA); Colorado State University; United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; University of California System; University of California Berkeley
推荐引用方式 GB/T 7714	Georgiou, Katerina,Jackson, Robert B.,Vinduskova, Olga,et al. Global stocks and capacity of mineral-associated soil organic carbon[J],2022,13(1).
APA	Georgiou, Katerina.,Jackson, Robert B..,Vinduskova, Olga.,Abramoff, Rose Z..,Ahlstrom, Anders.,...&Torn, Margaret S..(2022).Global stocks and capacity of mineral-associated soil organic carbon.NATURE COMMUNICATIONS,13(1).
MLA	Georgiou, Katerina,et al."Global stocks and capacity of mineral-associated soil organic carbon".NATURE COMMUNICATIONS 13.1(2022).