Mapping global distributions, environmental controls, and uncertainties of apparent topsoil and subsoil organic carbon turnover times
文献类型:期刊论文
作者 | Zhang, Lei1,2; Yang, Lin1; Crowther, Thomas W.3; Zohner, Constantin M.3; Doetterl, Sebastian4; Heuvelink, Gerard B. M.5,6; Wadoux, Alexandre M. J. -C.7; Zhu, A. -Xing8; Pu, Yue1; Shen, Feixue1 |
刊名 | EARTH SYSTEM SCIENCE DATA
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出版日期 | 2025-06-16 |
卷号 | 17期号:6页码:2605-2623 |
ISSN号 | 1866-3508 |
DOI | 10.5194/essd-17-2605-2025 |
产权排序 | 10 |
文献子类 | Article |
英文摘要 | The turnover time (tau) of global soil organic carbon is central to the functioning of terrestrial ecosystems. Yet our spatially explicit understanding of the depth-dependent variations and environmental controls of tau at a global scale remains incomplete. In this study, we combine multiple state-of-the-art observation-based datasets, including over 90 000 geo-referenced soil profiles, the latest root observations distributed globally, and large numbers of satellite-derived environmental variables, to generate global maps of apparent tau in topsoil (0-0.3 m) and subsoil (0.3-1 m) layers, with a spatial resolution of 30 arcsec (similar to 1 km at the Equator). We show that subsoil tau (385203485 years (mean, with a variation range from the 2.5th to 97.5th percentile)) is over 8 times longer than topsoil tau (1511137 years). The cross-validation shows that the fitted machine learning models effectively captured the variabilities in tau, with R2 values of 0.87 and 0.70 for topsoil and subsoil tau mapping, respectively. The prediction uncertainties of the tau maps were quantified for better user applications. The environmental controls on topsoil and subsoil tau were investigated at global, biome, and local scales. Our analyses illustrate the ways in which temperature, water availability, physio-chemical properties, and depth jointly exert impacts on tau. The data-driven approaches allow us to identify their interactions, thereby enriching our comprehension of mechanisms driving nonlinear tau-environment relationships at global to local scales. The distributions of dominating factors of tau at local scales were mapped for purposes of identifying context-dependent controls on tau across different regions. We further reveal that the current Earth system models may underestimate tau by comparing model-derived maps with our observation-derived tau maps. The resulting maps, with new insights, as demonstrated in this study, will facilitate future modelling efforts relating to carbon cycle-climate feedbacks and support effective carbon management. The dataset is archived and freely available at 10.5281/zenodo.14560239 (Zhang, 2025a). |
URL标识 | 查看原文 |
WOS关键词 | CONTINUOUS DEPTH FUNCTIONS ; SOIL CARBON ; TEMPERATURE SENSITIVITY ; ROOT DISTRIBUTIONS ; RESIDENCE TIME ; STORAGE ; CLIMATE ; PERMAFROST ; MATTER ; STABILIZATION |
WOS研究方向 | Geology ; Meteorology & Atmospheric Sciences |
语种 | 英语 |
WOS记录号 | WOS:001508494100001 |
出版者 | COPERNICUS GESELLSCHAFT MBH |
源URL | [http://ir.igsnrr.ac.cn/handle/311030/214532] ![]() |
专题 | 资源与环境信息系统国家重点实验室_外文论文 |
通讯作者 | Yang, Lin |
作者单位 | 1.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing, Peoples R China; 2.Lawrence Berkeley Natl Lab, Climate & Ecosyst Sci Div, Berkeley, CA USA; 3.ETH Zurich Swiss Fed Inst Technol, Inst Integrat Biol, Zurich, Switzerland; 4.ETH, Dept Environm Syst Sci, Soil Resources Grp, Zurich, Switzerland; 5.Wageningen Univ, Soil Geog & Landscape Grp, Wageningen, Netherlands; 6.ISR World Soil Informat, Wageningen, Netherlands; 7.Univ Montpellier, INRAE, LISAH, AgroParisTech,IRD,Inst Agro, Montpellier, France; 8.Univ Wisconsin, Dept Geog, Madison, WI USA; 9.Swiss Fed Inst Forest Snow & Landscape Res WSL, Birmensdorf, Switzerland; 10.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Lei,Yang, Lin,Crowther, Thomas W.,et al. Mapping global distributions, environmental controls, and uncertainties of apparent topsoil and subsoil organic carbon turnover times[J]. EARTH SYSTEM SCIENCE DATA,2025,17(6):2605-2623. |
APA | Zhang, Lei.,Yang, Lin.,Crowther, Thomas W..,Zohner, Constantin M..,Doetterl, Sebastian.,...&Zhou, Chenghu.(2025).Mapping global distributions, environmental controls, and uncertainties of apparent topsoil and subsoil organic carbon turnover times.EARTH SYSTEM SCIENCE DATA,17(6),2605-2623. |
MLA | Zhang, Lei,et al."Mapping global distributions, environmental controls, and uncertainties of apparent topsoil and subsoil organic carbon turnover times".EARTH SYSTEM SCIENCE DATA 17.6(2025):2605-2623. |
入库方式: OAI收割
来源:地理科学与资源研究所
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