Organic Carbon Stores in Alaska Soils

Ping, C. L.; Michaelson, G. J.; Kimble, J. M.; Everett, L. R.

doi:10.1201/9781420032291.ch47

Cited by 1 publication

(1 citation statement)

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“…The information gained was used to construct a map of the soil and patterned ground of the region. Then, we selected one reference profile based on the similarity of profiles within a landscape unit and determined the Oechel & Billings (1992) Alaska ND a 13-29 A and O horizon Biryukova & Orlov (1993) Russia 2 14.5 0.5 Tarnocai & Ballard (1994) Canadian Arctic ND a 26.2 Active layer Canadian Subarctic ND a 21.7 Nadelhoffer et al (1997) Alaska ND a 20-25 Active layer (0.4) Stolbovoi (2000Stolbovoi ( , 2002 Russia < 163 11.6 0.3 This study Siberia 10 14.5 Active layer 100 cm Tarnocai & Smith (1992) Canada 14 4-63 1.0 Matsuura & Yefremov (1995) Russia 7 11-20 1.0 Batjes (1996) Worldwide 5 15.7-125 1.0 Ping et al (1997Ping et al ( , 2002 Alaska 42 10-94 1.0 Stolbovoi (2000Stolbovoi ( , 2002 Russia < 163 16.6 1.0 Post (2006) Worldwide ND a 14.2 1.0 This study Siberia 10 30.7 1.0 a ND, no declaration. Carbon in the Siberian tundra 1165 carbon content of it.…”

Section: Mapping and Samplingmentioning

confidence: 80%

Carbon in tundra soils in the Lake Labaz region of arctic Siberia

Gundelwein

Müller-Lupp

Sommerkorn

et al. 2007

European J Soil Science

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SummaryLarge amounts of carbon are stored in permafrost-affected soils of the Arctic tundra. The quantity, distribution and composition of this carbon are important, because much of the carbon is likely to be released as a result of global warming. We have studied soils of the central Siberian Arctic to determine the carbon content and the nature of the organic matter by density fractionation, and 13 C-NMR-and 13 C-stable-isotope analyses. There are pronounced differences in the profile and variations from place to place in the quantity and nature of soil organic matter. We estimated that the mean stock of carbon was 14.5 kg m -2 within the active layer. We found a total of about 30.7 kg C m -3 in the entire upper metre of the soils. Carbon of the tussock tundra showed strong vertical differentiation, with a large proportion comprising decomposed, recalcitrant compounds. We identified within the soil several zones of aerobe and anaerobe decomposition. Mobile carbon fractions have precipitated under the influence of low temperatures.

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