Soil carbon inventories of carbon-13 on a latitude transect in Siberia

  • Bird, Michael
  • Santruckova, H
  • Arneth, A.
  • Grigoriev, Sergei A
  • Gleixner, Gerd
  • Kalaschnikov, Y N
  • Lloyd, J
  • Schulze, Detlef
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Publication date
December 2015
Publisher
Wiley
Journal
Tellus B

Abstract

We present soil organic carbon (SOC) inventories and carbon isotope compositions from over 900 samples collected in areas of minimally disturbed mature vegetation on freely drained soils (excluding peatlands) on a 1000 km transect along the Yennisey River, central Siberia. Carbon inventories over 0-30 cm depth range widely from 1.71 to 7.05 kg m-2. While an effect of changing climate or vegetation along the transect cannot be ruled out, the observed differences in SOC inventories are largely the result of variations in mineral soil texture, with inventories in fine-textured soils being approximately double those in coarse-textured soils. The δ13C values of SOC in the 0-5 cm interval ranged from -26.3 to -28.0‰, with δ13C values for the 5-30...

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