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
Reads0
Chats0
TLDR
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
More filters
Journal ArticleDOI
A Large and Persistent Carbon Sink in the World’s Forests
Yude Pan,Richard Birdsey,Jingyun Fang,Jingyun Fang,Richard A. Houghton,Pekka E. Kauppi,Werner A. Kurz,Oliver L. Phillips,Anatoly Shvidenko,Simon L. Lewis,Josep G. Canadell,Philippe Ciais,Robert B. Jackson,Stephen W. Pacala,A. David McGuire,Shilong Piao,Aapo Rautiainen,Stephen Sitch,Daniel J. Hayes +18 more
TL;DR: The total forest sink estimate is equivalent in magnitude to the terrestrial sink deduced from fossil fuel emissions and land-use change sources minus ocean and atmospheric sinks, with tropical estimates having the largest uncertainties.
Journal ArticleDOI
Persistence of soil organic matter as an ecosystem property
Michael W. I. Schmidt,Margaret S. Torn,Margaret S. Torn,Samuel Abiven,Thorsten Dittmar,Thorsten Dittmar,Georg Guggenberger,Ivan A. Janssens,Markus Kleber,Ingrid Kögel-Knabner,Johannes Lehmann,David A. C. Manning,Paolo Nannipieri,Daniel P. Rasse,Steve Weiner,Susan E. Trumbore +15 more
TL;DR: In this article, a new generation of experiments and soil carbon models were proposed to predict the SOM response to global warming, and they showed that molecular structure alone alone does not control SOM stability.
Journal ArticleDOI
Climate change and the permafrost carbon feedback
Edward A. G. Schuur,A. D. McGuire,Christina Schädel,Christina Schädel,Guido Grosse,Jennifer W. Harden,Daniel J. Hayes,Gustaf Hugelius,Charles D. Koven,Peter Kuhry,David M. Lawrence,Susan M. Natali,David Olefeldt,Vladimir E. Romanovsky,Kevin Schaefer,Merritt R. Turetsky,Claire C. Treat,Jorien E. Vonk +17 more
TL;DR: In this paper, the authors find that current evidence suggests a gradual and prolonged release of greenhouse gas emissions in a warming climate and present a research strategy with which to target poorly understood aspects of permafrost carbon dynamics.
Journal ArticleDOI
Deep soil organic matter—a key but poorly understood component of terrestrial C cycle
TL;DR: In this article, the authors synthesize literature concerning the sources, composition, mechanisms of stabilisation and destabilization of soil organic matter (SOM) stored in subsoil horizons.
Journal ArticleDOI
Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps
Gustaf Hugelius,Jens Strauss,Sebastian Zubrzycki,Jennifer W. Harden,Edward A. G. Schuur,Edward A. G. Schuur,Chien-Lu Ping,Lutz Schirrmeister,Guido Grosse,Gary J. Michaelson,Charles D. Koven,Jonathan A. O'Donnell,Bo Elberling,Umakant Mishra,Philip Camill,Zicheng Yu,Juri Palmtag,Peter Kuhry +17 more
TL;DR: In this article, the authors presented revised estimates of permafrost organic carbon stocks, including quantitative uncertainty estimates, in the 0-3 m depth range in soils as well as for sediments deeper than 3 m in deltaic deposits of major rivers and in the Yedoma region of Siberia and Alaska.
References
More filters
Book ChapterDOI
Boreal forests and tundra
Michael J. Apps,Werner A. Kurz,R. J. Luxmoore,L. O. Nilsson,Roger A. Sedjo,R. Schmidt,L. G. Simpson,T. S. Vinson +7 more
TL;DR: The circumpolar boreal biomes cover ca. 2 109 ha of the northern hemisphere and contain ca. 800 Pg C in biomass, detritus, soil, and peat C pools as discussed by the authors.
Journal ArticleDOI
Paleoenvironmental and paleoclimatic records from permafrost deposits in the Arctic region of Northern Siberia
Lutz Schirrmeister,Christine Siegert,Tatyana Kuznetsova,Svetlana Kuzmina,Andrei Andreev,Frank Kienast,Hanno Meyer,Anatoly A Bobrov +7 more
Journal ArticleDOI
Permafrost Thaw Accelerates in Boreal Peatlands During Late-20th Century Climate Warming
TL;DR: In this paper, the authors examined rates of discontinuous permafrost thaw in the boreal peatlands of northern Manitoba, Canada, using a combination of tree-ring analyses to document thaw rates from 1941-1991 and direct measurements of permanent benchmarks established in 1995 and resurveyed in 2002.
Journal ArticleDOI
Carbon pools and accumulation in peatlands of the former Soviet Union
TL;DR: In this article, an estimate of the areal extent, carbon pools, and rate of carbon accumulation in peatlands of the former Soviet Union (FSU) obtained by interrelating a number of regional databases and maps, including formerly classified maps, is presented.
Related Papers (5)
Vulnerability of Permafrost Carbon to Climate Change: Implications for the Global Carbon Cycle
Edward A. G. Schuur,James G. Bockheim,Josep G. Canadell,Eugénie S. Euskirchen,Christopher B. Field,Sergey Goryachkin,Stefan Hagemann,Peter Kuhry,Peter M. Lafleur,Hanna Lee,Galina Mazhitova,Frederick E. Nelson,Annette Rinke,Vladimir E. Romanovsky,Nikolay I. Shiklomanov,Charles Tarnocai,Sergey Venevsky,Jason G. Vogel,Sergei Zimov +18 more
Climate change and the permafrost carbon feedback
Edward A. G. Schuur,A. D. McGuire,Christina Schädel,Christina Schädel,Guido Grosse,Jennifer W. Harden,Daniel J. Hayes,Gustaf Hugelius,Charles D. Koven,Peter Kuhry,David M. Lawrence,Susan M. Natali,David Olefeldt,Vladimir E. Romanovsky,Kevin Schaefer,Merritt R. Turetsky,Claire C. Treat,Jorien E. Vonk +17 more