Implications of acidified S inputs on the fate and consequences of N deposition: results from a field manipulation of a Sitka spruce canopy in Southern Scotland
Sheppard, Lucy J.; Crossley, Alan; Ingleby, Kevin; Woods, Clive. 2008 Implications of acidified S inputs on the fate and consequences of N deposition: results from a field manipulation of a Sitka spruce canopy in Southern Scotland. International Journal of Environmental Studies, 65 (3). 411-432. 10.1080/00207230701862553Before downloading, please read NORA policies.
This paper describes a field manipulation experiment where the effects of a simulated decline in acidified S inputs on the fate of N on Sitka spruce growing on an organo-mineral soil were investigated, along side those of the original treatments: ammonium nitrate, with and without sulphuric acid and sodium sulphate. Five years of treatment, at canopy height, with up to 100 kg N and S ha-1y-1 were extended for a further 3 years, for half the plots, while the remaining plots were deprived of N, sulphuric acid or S. Stem area increment was unresponsive, whereas foliar N and Mg concentrations and fine roots were sensitive to the removal of N and acidity. This recovery experiment confirmed that the presence of acidified S modifies the fate of N and suggests the reduction in acidified S deposition will increase the bioavailability of N.
|Programmes:||CEH Programmes pre-2009 publications > Biogeochemistry|
|Additional Information:||The definitive version of this paper is available at www.informaworld.com|
|Additional Keywords:||Fine roots, foliar nutrients, litter, soil solution chemistry, stem area increment,|
|NORA Subject Terms:||Botany
Agriculture and Soil Science
Biology and Microbiology
Ecology and Environment
|Date made live:||17 Feb 2009 14:38|
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