Soil organic carbon (SOC) and sediment contents and fluxes for terrain units along the Yukon Coastal Plain, Canada, including corrections for volumetric ground ice contents ...

Narrowing uncertainties about carbon cycling is important in the Arctic where rapid environmental changes contribute to enhanced mobilization of carbon. Here we quantify soil organic carbon (SOC) contents of permafrost soils along the Yukon Coastal Plain and determine the annual fluxes from erosion....

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Bibliographic Details
Main Authors: Couture, Nicole, Irrgang, Anna Maria, Pollard, Wayne H, Lantuit, Hugues, Fritz, Michael
Format: Dataset
Language:English
Published: PANGAEA 2018
Subjects:
Location
Sample ID
LATITUDE
LONGITUDE
Layer thickness
Depth, soil, minimum
Depth, soil, maximum
Lithology/composition/facies
Carbon, organic, total
Reference/source
Density, dry bulk
Mass per unit area
Density, mass density
Ice content
Change rate
Area, eroded
Mass, flux
Carbon and nitrogen and sulfur CNS isotope element analyzer, Elementar, Vario EL III
Corrected
Arctic
Canada
Pollard
The Bluff
Yukon
Beaufort Sea
Ice
permafrost
wedge*
Online Access:https://dx.doi.org/10.1594/pangaea.884689
https://doi.pangaea.de/10.1594/PANGAEA.884689
Description
Summary:Narrowing uncertainties about carbon cycling is important in the Arctic where rapid environmental changes contribute to enhanced mobilization of carbon. Here we quantify soil organic carbon (SOC) contents of permafrost soils along the Yukon Coastal Plain and determine the annual fluxes from erosion. Different terrain units are assessed based on surficial geology, morphology, and ground ice conditions. To account for the volume of wedge ice and massive ice in a unit, sample SOC contents are reduced by 19% and sediment contents by 16%. The SOC content in a 1 m**2 column of soil varies according to the height of the bluff, ranging from 30 to 662 kg, with a mean value of 183 kg. Forty-four per cent of the SOC is within the top 1 m of soil and values vary based on surficial materials, ranging from 30 to 53 kg C/m**3, with a mean of 41 kg. Eighty per cent of the shoreline is erosive with a mean annual rate of change is 0.7 m/a. This results in a SOC flux per meter of shoreline of 131 kg C/m/a, and a total flux for ... : Supplement to: Couture, Nicole; Irrgang, Anna Maria; Pollard, Wayne H; Lantuit, Hugues; Fritz, Michael (2018): Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea. Journal of Geophysical Research: Biogeosciences ...

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