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Soil organic carbon storage in continuous permafrost terrain; two case studies from NE Greenlandand NE Siberia
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
2011 (English)Conference paper, Published paper (Other academic)
Abstract [en]

The northern circumpolar permafrost region occupies about 16% of the global soil areaand holds approximately 50% of the global belowground soil organic carbon (SOC). We describe thequantity and quality of soil organic matter (SOM) in two areas of continuous permafrost in NE Greenland andNE Siberia. The main emphasis lies on the role of cryoturbation and Pleistocene loess-like deposits(yedoma) for SOC storage. This study is based on field work in three different study sites: Zackenberg(Greenland) and Shalaurovo and Chersky (Siberia), as well as laboratory analysis and radiocarbon dating.The estimated mean SOC storage in the upper meter of soil for Zackenberg is 10.5 kg C m-2 with 16% incryoturbated soil pockets. In Shalaurovo, the mean SOC storage is 29.0 kg C m-2 and in Chersky 21.7 kg Cm-2 with more than 30% stored in cryoturbated soil pockets. The study also presents new analyses for deepyedoma deposits(down to 5 m depth). Data from these sites show that the dry bulk densities are muchlower (due to excess ground ice) than those previously reported in the literature, leading to lower estimatesof SOC storage in these deposits.

Place, publisher, year, edition, pages
2011.
National Category
Physical Geography
Identifiers
URN: urn:nbn:se:su:diva-66886OAI: oai:DiVA.org:su-66886DiVA: diva2:468783
Conference
AGU fall meeting 2011
Available from: 2011-12-21 Created: 2011-12-21 Last updated: 2016-12-22

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Palmtag, JuriHugelius, GustafKuhry, Peter
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