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
Differentiating moss from higher plants is critical in studying the carbon cycle of the boreal biome
Wenping Yuan,Shuguang Liu,Wenjie Dong,Shunlin Liang,Shuqing Zhao,Jingming Chen,Wenfang Xu,Xianglan Li,Alan Barr,T. Andrew Black,Wende Yan,Michael L. Goulden,Liisa Kulmala,Anders Lindroth,Hank A. Margolis,Yojiro Matsuura,Eddy Moors,Michiel K. van der Molen,Takeshi Ohta,Kim Pilegaard,Andrej Varlagin,Timo Vesala +21 more
TL;DR: It is shown that the difference in photosynthetic capacity between these two plant functional types has never been explicitly included when estimating regional GPP in the boreal region, resulting in a substantial overestimation.
Journal ArticleDOI
Controls on winter ecosystem respiration in temperate and boreal ecosystems
Tao Wang,P. Ciais,S. L. Piao,Catherine Ottlé,P. Brender,Fabienne Maignan,Altaf Arain,A. Cescatti,Damiano Gianelle,Christopher M. Gough,Lianhong Gu,Peter M. Lafleur,Terhi K. Laurila,Barbara Marcolla,Hank A. Margolis,Leonardo Montagnani,Eddy Moors,Nobuko Saigusa,Timo Vesala,Georg Wohlfahrt,Charles D. Koven,Andy Black,Ebba Dellwik,Axel Don,D.Y. Hollinger,Alexander Knohl,Russell K. Monson,J. W. Munger,Andrew E. Suyker,Andrej Varlagin,Shashi B. Verma +30 more
TL;DR: In this article, the authors analyzed eddy covariance flux data from 57 ecosystem sites ranging from ~35° N to ~70° N, and found that winter respiration sensitivity to temperature variation across space (QS) was higher than the one over time (interannual, QT), which can be expected because QS not only accounts for climate gradients across sites but also correlated with (positively correlated) the spatial variability of substrate quantity.
Journal ArticleDOI
Radium isotopes as submarine groundwater discharge (SGD) tracers: Review and recommendations
Jordi Garcia-Orellana,Valentí Rodellas,Joseph Tamborski,Marc Diego-Feliu,P. van Beek,Yishai Weinstein,Matthew A. Charette,Aaron Alorda-Kleinglass,Holly A. Michael,Thomas Stieglitz,Jan Scholten +10 more
TL;DR: In this article, the application of Ra isotopes as tracers of SGD and associated inputs of water and solutes to the coastal ocean is discussed, as well as the processes controlling Ra enrichment and depletion in coastal groundwater and seawater.
Journal ArticleDOI
Deep Soil C, N, and P Stocks and Stoichiometry in Response to Land Use Patterns in the Loess Hilly Region of China.
Changzhen Li,Luhong Zhao,Pingsheng Sun,Fazhu Zhao,Di Kang,Gaihe Yang,Xinhui Han,Yongzhong Feng,Guangxin Ren +8 more
TL;DR: It was concluded that afforestation was the best choice for soil nutrient restoration of degraded land, and deep soil provided an extremely important resource for evaluating soil C, N and P pools and cycling.
Journal ArticleDOI
Decreases in soil moisture and organic matter quality suppress microbial decomposition following a boreal forest fire
TL;DR: In this paper, the authors investigated the response of microbial decomposition to a boreal forest fire in interior Alaska and test the mechanisms that control post-fire changes in biological decomposition.
References
More filters
Journal ArticleDOI
Temperature sensitivity of soil carbon decomposition and feedbacks to climate change
TL;DR: This work has suggested that several environmental constraints obscure the intrinsic temperature sensitivity of substrate decomposition, causing lower observed ‘apparent’ temperature sensitivity, and these constraints may, themselves, be sensitive to climate.
Journal ArticleDOI
The vertical distribution of soil organic carbon and its relation to climate and vegetation
TL;DR: In this paper, the authors examined the association of soil organic carbon (SOC) content with climate and soil texture at different soil depths, and tested the hypothesis that vegetation type, through patterns of allocation, is a dominant control on the vertical distribution of SOC.
Journal ArticleDOI
Soil taxonomy—a basic system of soil classification for making and interpreting soil surveys
Journal ArticleDOI
Northern Peatlands: Role in the Carbon Cycle and Probable Responses to Climatic Warming.
TL;DR: Satellite-monitoring of the abundance of open water in the peatlands of the West Siberian Plain and the Hudson/James Bay Lowland is suggested as a likely method of detecting early effects of climatic warming upon boreal and subarctic peatland environments.
Journal ArticleDOI
Total carbon and nitrogen in the soils of the world
TL;DR: In this article, a discrepancy of approximately 350 × 1015 g (or Pg) of C in two recent estimates of soil carbon reserves worldwide is evaluated using the geo-referenced database developed for the World Inventory of Soil Emission Potentials (WISE) project.
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