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
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High-resolution digital mapping of soil organic carbon in permafrost terrain using machine learning : a case study in a sub-Arctic peatland environment
TL;DR: In this article, a high-resolution digital mapping of soil organic carbon in permafrost terrain using machine learning is presented, and an integrated case study in a sub-Arctic peatland environment is presented.
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The role of mosses in carbon uptake and partitioning in arctic vegetation
Lorna E. Street,Jens-Arne Subke,Martin Sommerkorn,Victoria L. Sloan,Helene Ducrotoy,Gareth K. Phoenix,Mathew Williams +6 more
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Improved quantification of microbial CH 4 oxidation efficiency in arctic wetland soils using carbon isotope fractionation
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Temperature response of litter and soil organic matter decomposition is determined by chemical composition of organic material
Björn Erhagen,Mats G. Öquist,Tobias Sparrman,Mahsa Haei,Ulrik Ilstedt,Mattias Hedenström,Jürgen Schleucher,Mats Nilsson +7 more
TL;DR: The temperature response of soil decomposition processes can be described by the chemical composition of its constituent organic matter, this paves the way for improved ecosystem modeling of biosphere feedbacks under a changing climate.
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Eye on the Taiga: Removing Global Policy Impediments to Safeguard the Boreal Forest
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