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DOI10.1038/s41561-023-01354-5
Dominance of particulate organic carbon in top mineral soils in cold regions
Garcia-Palacios, Pablo; Bradford, Mark A.; Benavente-Ferraces, Iria; de Celis, Miguel; Delgado-Baquerizo, Manuel; Garcia-Gil, Juan Carlos; Gaitan, Juan J.; Goni-Urtiaga, Asier; Mueller, Carsten W.; Panettieri, Marco; Rey, Ana; Saez-Sandino, Tadeo; Schuur, Edward A. G.; Sokol, Noah W.; Tedersoo, Leho; Plaza, Cesar
发表日期2024
ISSN1752-0894
EISSN1752-0908
起始页码17
结束页码2
卷号17期号:2
英文摘要The largest stocks of soil organic carbon can be found in cold regions such as Arctic, subarctic and alpine biomes, which are warming faster than the global average. Discriminating between particulate and mineral-associated organic carbon can constrain the uncertainty of projected changes in global soil organic carbon stocks. Yet carbon fractions are not considered when assessing the contribution of cold regions to land carbon-climate feedbacks. Here we synthesize field paired observations of particulate and mineral-associated organic carbon in the mineral layer, along with experimental warming data, to investigate whether the particulate fraction dominates in cold regions and whether this relates to higher soil organic carbon losses with warming than in other (milder) biomes. We show that soil organic carbon in the first 30 cm of mineral soil is dominated or co-dominated by particulate carbon in both permafrost and non-permafrost soils, and in Arctic and alpine ecosystems but not in subarctic environments. Our findings indicate that soil organic carbon is most vulnerable to warming in cold regions compared with milder biomes, with this vulnerability mediated by higher warming-induced losses of particulate carbon. The massive soil carbon accumulation in cold regions appears distributed predominantly in the more vulnerable particulate fraction rather than in the more persistent mineral-associated fraction, supporting the likelihood of a strong, positive land carbon-climate feedback. Organic carbon in the top layer of mineral soils in cold regions is dominated by the particulate fraction, according to analyses in Arctic and alpine ecosystems.
语种英语
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:001136643500001
来源期刊NATURE GEOSCIENCE
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/298693
作者单位Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto de Ciencias Agrarias (ICA); University of Zurich; Yale University; Consejo Superior de Investigaciones Cientificas (CSIC); Instituto Nacional de Tecnologia Agropecuaria (INTA); Universidad Nacional de Lujan; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); University of Copenhagen; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Museo Nacional de Ciencias Naturales (MNCN); Universidad Pablo de Olavide; Northern Arizona University; United States Department of Energy (DOE); Lawrence Livermore National Laboratory; University of Tartu; King Saud University
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Garcia-Palacios, Pablo,Bradford, Mark A.,Benavente-Ferraces, Iria,et al. Dominance of particulate organic carbon in top mineral soils in cold regions[J],2024,17(2).
APA Garcia-Palacios, Pablo.,Bradford, Mark A..,Benavente-Ferraces, Iria.,de Celis, Miguel.,Delgado-Baquerizo, Manuel.,...&Plaza, Cesar.(2024).Dominance of particulate organic carbon in top mineral soils in cold regions.NATURE GEOSCIENCE,17(2).
MLA Garcia-Palacios, Pablo,et al."Dominance of particulate organic carbon in top mineral soils in cold regions".NATURE GEOSCIENCE 17.2(2024).
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