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Spatial variability of bomb C-14 in an upland peat bog

Hardie, S. M. L.; Garnett, M. H.; Fallick, A. E.; Rowland, A. P.; Ostle, N. J.. 2007 Spatial variability of bomb C-14 in an upland peat bog. Radiocarbon, 49 (2). 1055-1063.

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Abstract/Summary

As part of a study investigating the carbon balance of a blanket bog, we made an assessment of the spatial variation of radiocarbon concentrations in the surface layers of a small area of peatland in the north of England. The peat depth at which bomb-14C content was the highest varied considerably between cores sampled from across the site. At several sampling locations, 14C levels >100% Modern were confined to the surface 8 cm, whereas bomb 14C was evident at 1 site, located only meters away, to a depth of at least 12-16 cm. Using the layer where 14C levels first exceeded 100% Modern as a chronological reference layer, we estimated the carbon accumulation rate over the last 50 yr for the surface peat at each site (range ∼;20 to ∼ 125 g C m2 yr−1). Our results show that although carbon accumulation over the last 50 yr was similar across the site, variation in the depth to which bomb 14C was evident implied considerable variation in the vertical peat growth rate

Item Type: Publication - Article
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry > BG01 Measuring and modelling trace gas, aerosol and carbon > BG01.2 Carbon
CEH Sections: Shore
ISSN: 0033-8222
NORA Subject Terms: Agriculture and Soil Science
Biology and Microbiology
Ecology and Environment
Earth Sciences
Date made live: 19 Mar 2008 12:09
URI: http://nora.nerc.ac.uk/id/eprint/2435

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