Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-020-0596-z |
The age distribution of global soil carbon inferred from radiocarbon measurements | |
Shi, Zheng1,2; Allison, Steven D.1,2; He, Yujie2; Levine, Paul A.2; Hoyt, Alison M.3; Beem-Miller, Jeffrey3; Zhu, Qing4; Wieder, William R.5; Trumbore, Susan3; Randerson, James T.2 | |
2020-06-29 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2020 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA; Germany |
英文摘要 | Soils contain more carbon than the atmosphere and vegetation combined. An increased flow of carbon from the atmosphere into soil pools could help mitigate anthropogenic emissions of carbon dioxide and climate change. Yet we do not know how quickly soils might respond because the age distribution of soil carbon is uncertain. Here we used 789 radiocarbon ( increment C-14) profiles, along with other geospatial information, to create globally gridded datasets of mineral soil increment C-14 and mean age. We found that soil depth is a primary driver of increment C-14, whereas climate (for example, mean annual temperature) is a major control on the spatial pattern of increment C-14 in surface soil. Integrated to a depth of 1 m, global soil carbon has a mean age of 4,830 +/- 1,730 yr, with older carbon in deeper layers and permafrost regions. In contrast, vertically resolved land models simulate increment C-14 values that imply younger carbon ages and a more rapid carbon turnover. Our data-derived estimates of older mean soil carbon age suggest that soils will accumulate less carbon than predicted by current Earth system models over the twenty-first century. Reconciling these models with the global distribution of soil radiocarbon will require a better representation of the mechanisms that control carbon persistence in soils. Soils may accumulate less carbon and with a slower turnover than Earth system models predict, according to analysis of the age distribution of global soil carbon, which finds that the mean age of soil carbon is older than that in simulated in models. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000544215600001 |
WOS关键词 | COMMUNITY LAND MODEL ; ORGANIC-CARBON ; TEMPERATURE SENSITIVITY ; RESIDENCE TIMES ; STORAGE ; CLIMATE ; TURNOVER ; MATTER ; DECOMPOSITION ; PRESERVATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/281787 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92717 USA; 2.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA; 3.Max Planck Inst Biogeochem, Dept Biogeochem Proc, Jena, Germany; 4.Lawrence Berkeley Natl Lab, Climate & Ecosyst Sci Div, Berkeley, CA USA; 5.Natl Ctr Atmospher Res, Climate & Global Dynam Lab, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Shi, Zheng,Allison, Steven D.,He, Yujie,et al. The age distribution of global soil carbon inferred from radiocarbon measurements[J]. NATURE GEOSCIENCE,2020. |
APA | Shi, Zheng.,Allison, Steven D..,He, Yujie.,Levine, Paul A..,Hoyt, Alison M..,...&Randerson, James T..(2020).The age distribution of global soil carbon inferred from radiocarbon measurements.NATURE GEOSCIENCE. |
MLA | Shi, Zheng,et al."The age distribution of global soil carbon inferred from radiocarbon measurements".NATURE GEOSCIENCE (2020). |
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