Critical loads for nitrogen deposition for Great Britain

Bull, K.R.; Brown, M. ORCID:; Dyke, H.; Eversham, B.C.; Fuller, R.M.; Hornung, M.; Howard, D.C.; Rodwell, J.; Roy, D.B. ORCID: 1995 Critical loads for nitrogen deposition for Great Britain. Water, Air and Soil Pollution, 85 (4). 2527-2532.

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There is currently much interest in mapping critical loads for nitrogen deposition as part of a strategy for controlling nitrogen emissions. While nitrogen deposition may cause acidification and excess nutrient effects, the former were considered previously in studies of sulphur deposition. In the UK, work on developing nutrient nitrogen critical loads maps has used several methods and databases. Two approaches are described here, one a steady state calculation using a nitrogen saturation limit for soil systems, the other an empirical estimate of critical loads set to prevent changes to vegetation communities. The empirical method uses national species records and land cover data derived from satellite imagery. Maps drawn from the available data are dependent upon a number of factors which reflect the approach used. To apply the nutrient critical loads to a strategy for future abatement measures, the nutrient nitrogen values for soils have been incorporated within a critical loads function which takes into account both acidity and nutrient effects as related to deposition loads for sulphur and nitrogen. This function may be used with deposition data to identify the need for sulphur and nitrogen emission reductions.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry
UKCEH and CEH Sections/Science Areas: _ Pre-2000 sections
ISSN: 0049-6979
Additional Keywords: Nitrogen deposition, critical loads, abatement strategies, soils, vegetation
NORA Subject Terms: Agriculture and Soil Science
Atmospheric Sciences
Date made live: 22 May 2009 15:02 +0 (UTC)

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