Siberian Peatlands a Net Carbon Sink and Global Methane Source since the Early Holocene
Interpolar methane gradient (IPG) data from ice cores suggest the "switching on" of a major Northern Hemisphere methane source in the early Holocene. Extensive data from Russia's West Siberian Lowland show (i) explosive, widespread peatland establishment between 11.5 and 9 thousand years ago, predating comparable development in North America and synchronous with increased atmospheric methane concentrations and IPGs, (ii) larger carbon stocks than previously thought (70.2 Petagrams, up to ∼26% of all terrestrial carbon accumulated since the Last Glacial Maximum), and (iii) little evidence for catastrophic oxidation, suggesting the region represents a long-term carbon dioxide sink and global methane source since the early Holocene.
Smith, L. C.; MacDonald, G. M.; Velichko, A. A.; Beilman, D. W.; Borisova, O. K.; Frey, K. E.; Kremenetski, K. V.; and Sheng, Y., "Siberian Peatlands a Net Carbon Sink and Global Methane Source since the Early Holocene" (2004). Geography. 251.