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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The pool of organic carbon in the soils of Russia
Dmitry Schepaschenko,Dmitry Schepaschenko,L.V. Mukhortova,Anatoly Shvidenko,Anatoly Shvidenko,E.F. Vedrova +5 more
TL;DR: In this article, an automated information system making it possible to estimate spatial distribution of soil organic carbon pool with a high spatial resolution (1 km2) has been developed, according to the obtained estimates, the total pool of organic carbon in the 1-m-deep soil layer on the territory of Russia reaches 317.1 Pg; the average organic carbon density in this layer for the entire Russia constitutes 19.2 kg C/m2.
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Quantifying uncertainties in soil carbon responses to changes in global mean temperature and precipitation
Kazuya Nishina,Akihiko Ito,David J. Beerling,Patricia Cadule,P. Ciais,Douglas B. Clark,Pete Falloon,Andrew D. Friend,Ron Kahana,Etsushi Kato,Rozenn Keribin,Wolfgang Lucht,Mark R. Lomas,Tim T. Rademacher,Ryan Pavlick,Sibyll Schaphoff,Nicolas Vuichard,L. Warszawaski,Tokuta Yokohata +18 more
TL;DR: In this article, the authors examined the simulation results of seven terrestrial biome models when forced with climate projections from four representative-concentration-pathways (RCPs)-based atmospheric concentration scenarios.
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Seven-year trends of CO2exchange in a tundra ecosystem affected by long-term permafrost thaw
Christian Trucco,Edward A. G. Schuur,Susan M. Natali,E. Fay Belshe,Rosvel Bracho,Jason G. Vogel +5 more
TL;DR: In this article, the authors measured C fluxes over a seven-year period at three sites representing a gradient of time since permafrost thaw in upland tundra ecosystems located in Interior Alaska and found an increasing growing season trend in gross primary productivity, net ecosystem exchange (NEE), aboveground net primary productivity (ANPP), and annual NEE at all sites over the seven year study period.
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A preliminary study of cryosphere service function and value evaluation
Cunde Xiao,Shijin Wang,Da-He Qin +2 more
TL;DR: In this paper, the authors established the value evaluation system of the Cryosphere Service Function (CSF) and its value evaluation, which can benefit the decision makers and public's awareness of environmental protection, and implemented sustainable CSF utilization strategies and macroeconomic policymaking for global environmental protection.
References
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