Soil organic carbon pools in the northern circumpolar permafrost region
Charles Tarnocai,Josep G. Canadell,Edward A. G. Schuur,Peter Kuhry,Galina Mazhitova,Sergei Zimov +5 more
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In this article, the authors reported a new estimate of the carbon pools in soils of the northern permafrost region, including deeper layers and pools not accounted for in previous analyses.Abstract:
of all soils in the northern permafrost region is approximately 18,782 � 10 3 km 2 ,o r approximately 16% of the global soil area. In the northern permafrost region, organic soils (peatlands) and cryoturbated permafrost-affected mineral soils have the highest mean soil organic carbon contents (32.2–69.6 kg m �2 ). Here we report a new estimate of the carbon pools in soils of the northern permafrost region, including deeper layers and pools not accounted for in previous analyses. Carbon pools were estimated to be 191.29 Pg for the 0–30 cm depth, 495.80 Pg for the 0–100 cm depth, and 1024.00 Pg for the 0–300 cm depth. Our estimate for the first meter of soil alone is about double that reported for this region in previous analyses. Carbon pools in layers deeper than 300 cm were estimated to be 407 Pg in yedoma deposits and 241 Pg in deltaic deposits. In total, the northern permafrost region contains approximately 1672 Pg of organic carbon, of which approximately 1466 Pg, or 88%, occurs in perennially frozen soils and deposits. This 1672 Pg of organic carbon would account for approximately 50% of the estimated global belowground organic carbon pool.read more
Citations
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Drivers of dissolved organic carbon export in a subarctic catchment: Importance of microbial decomposition, sorption-desorption, peatland and lateral flow.
Jing Tang,Alla Yurova,Alla Yurova,Guy Schurgers,Paul A. Miller,Stefan Olin,Benjamin Smith,Matthias Benjamin Siewert,Matthias Benjamin Siewert,David Olefeldt,Peter Pilesjö,Anneli Poska +11 more
TL;DR: This paper incorporates processes related to DOC production, mineralization, diffusion, sorption-desorption, and leaching into a customized arctic version of the dynamic ecosystem model LPJ-GUESS in order to mechanistically model catchment DOC export, and to link this flux to other ecosystem processes.
Journal ArticleDOI
New high-resolution estimates of the permafrost thermal state and hydrothermal conditions over the Northern Hemisphere
Youhua Ran,Qihao Yu,Olli Karjalainen,Anandan Balakrishnan,V. O. Amatari,Caroline Arnould-Béhar,Alexander Kostyuk +6 more
TL;DR: In this paper , the authors proposed a novel permafrost datasets for the Northern Hemisphere (NH), including predictions of the mean annual ground temperature (MAGT) at the depth of zero annual amplitude (DZAA) and active layer thickness (ALT) with 1 km resolution for the period of 2000-2016, as well as estimates of the probability of permafure occurrence and permafore zonation based on hydrothermal conditions.
Book ChapterDOI
Permafrost – Physical Aspects, Carbon Cycling, Databases and Uncertainties
Julia Boike,Moritz Langer,Hugues Lantuit,Sina Muster,Kurt Roth,Torsten Sachs,Paul Overduin,Sebastian Westermann,A. David McGuire +8 more
TL;DR: In this paper, an observation network is implemented to understand responses of permafrost and carbon from northern high latitude terrestrial ecosystems at a range of temporal and spatial scales, and the understanding gained from these observation networks needs to be integrated into modeling frameworks capable of representing how the responses of the carbon cycle will influence the trajectory of climate in the future.
Journal ArticleDOI
Microbial Community and Functional Gene Changes in Arctic Tundra Soils in a Microcosm Warming Experiment.
Ziming Yang,Ziming Yang,Sihang Yang,Joy D. Van Nostrand,Jizhong Zhou,Jizhong Zhou,Jizhong Zhou,Wei Fang,Qi Qi,Yu-Rong Liu,Stan D. Wullschleger,Liyuan Liang,Liyuan Liang,David E. Graham,Yunfeng Yang,Baohua Gu +15 more
TL;DR: The important roles of microbial community in SOC degradation are demonstrated and support previous findings that SOC in organic-rich Arctic tundra is highly vulnerable to microbial degradation under warming.
Journal ArticleDOI
Effect of permafrost on the formation of soil organic carbon pools and their physical–chemical properties in the Eastern Swiss Alps
Barbara Zollinger,Christine Alewell,Christof Kneisel,Katrin Meusburger,Holger Gärtner,Dagmar Brandová,Susan Ivy-Ochs,Michael W. I. Schmidt,Markus Egli +8 more
TL;DR: In this paper, the authors investigated the potential effect of permafrost thawing by the analysis of the physical-chemical soil properties in the Alps compared to non-permafrost sites.
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