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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. 10.1080/00207230701862553

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Abstract/Summary

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.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1080/00207230701862553
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry
CEH Sections: Shore
Billett (to November 2013)
ISSN: 1029-0400 online
Additional Information. Not used in RCUK Gateway to Research.: 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
URI: http://nora.nerc.ac.uk/id/eprint/5892

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