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Storage, Landscape ...
Storage, Landscape Distribution, and Burial History of Soil Organic Matter in Contrasting Areas of Continuous Permafrost
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- Palmtag, Juri, 1980- (författare)
- Stockholms universitet,Institutionen för naturgeografi
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- Hugelius, Gustaf (författare)
- Stockholms universitet,Institutionen för naturgeografi
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Lashchinskiy, Nikolay (författare)
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Tamstorf, Mikkel P. (författare)
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Richter, Andreas (författare)
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Elberling, Bo (författare)
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- Kuhry, Peter (författare)
- Stockholms universitet,Institutionen för naturgeografi
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(creator_code:org_t)
- 2015
- 2015
- Engelska.
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Ingår i: Arctic, Antarctic and Alpine research. - 1523-0430 .- 1938-4246. ; 47:1, s. 71-88
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This study describes and compares soil organic matter (SOM) quantity and characteristics in two areas of continuous permafrost, a mountainous region in NE Greenland (Zackenberg study site) and a lowland region in NE Siberia (Cherskiy and Shalaurovo study sites). Our assessments are based on stratified-random landscape-level inventories of soil profiles down to 1 m depth, with physico-chemical, elemental, and radiocarbon-dating analyses. The estimated mean soil organic carbon (SOC) storage in the upper meter of soils in the NE Greenland site is 8.3 ± 1.8 kg C m-2 compared to 20.3 ± 2.2 kg C m-2 and 30.0 ± 2.0 kg C m-2 in the NE Siberian sites (95% confidence intervals). The lower SOC storage in the High Arctic site in NE Greenland can be largely explained by the fact that 59% of the study area is located at higher elevation with mostly barren ground and thus very low SOC contents. In addition, SOC-rich fens and bogs occupy a much smaller proportion of the landscape in NE Greenland (∼3%) than in NE Siberia (∼20%). The contribution of deeper buried C-enriched material in the mineral soil horizons to the total SOC storage is lower in the NE Greenland site (∼13%) compared to the NE Siberian sites (∼24%–30%). Buried SOM seems generally more decomposed in NE Greenland than in NE Siberia, which we relate to different burial mechanisms prevailing in these regions.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Naturgeografi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Physical Geography (hsv//eng)
Nyckelord
- soil organic carbon
- degree of decomposition in soil organic matter
- radiocarbon dating
- C/N ratios
- continuous permafrost
- slope processes
- cryoturbation
- Physical Geography
- naturgeografi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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