Characterisation of the Permafrost Carbon Pool
نویسندگان
چکیده
1 Department of Physical Geography and Quaternary Geology, Stockholm University, Stockholm, Sweden 2 Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, USA 3 US Geological Survey, Menlo Park, CA, USA 4 Lawrence Berkeley National Laboratory, Berkeley, CA, USA 5 Palmer Research Center, University of Alaska Fairbanks, Fairbanks, AK, USA 6 Alfred Wegener Institute, Potsdam, Germany 7 Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada
منابع مشابه
Permafrost carbon: Stock and decomposability of a globally significant carbon pool
[1] The magnitude of future CO2-induced climate warming is difficult to predict because of uncertainties in the role of ecosystems and oceans as CO2 sources and sinks. Siberia has extensive areas (1 10 km) of deep (up to 90m) deposits of organic-rich frozen loess (wind-blown silt) that accumulated during the Pleistocene but have not been considered in most global carbon (C) inventories. Similar...
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[1] Estimates for circumpolar permafrost organic carbon (OC) storage suggest that this pool contains twice the amount of current atmospheric carbon. The Yedoma region sequestered substantial quantities of OC and is unique because its deep OC, which was incorporated into permafrost during ice age conditions. Rapid inclusion of labile organic matter into permafrost halted decomposition and result...
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[1] The Northern Circumpolar Soil Carbon Database was developed in order to determine carbon pools in soils of the northern circumpolar permafrost region. The area of all soils in the northern permafrost region is approximately 18,782 10 km, or approximately 16% of the global soil area. In the northern permafrost region, organic soils (peatlands) and cryoturbated permafrost-affected mineral soi...
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High-latitude ecosystems store approximately 1700 Pg of soil carbon (C), which is twice as much C as is currently contained in the atmosphere. Permafrost thaw and subsequent microbial decomposition of permafrost organic matter could add large amounts of C to the atmosphere, thereby influencing the global C cycle. The rates at which C is being released from the permafrost zone at different soil ...
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