Stevens, Carly and Dise, N.B. and Gowing, D.J.G. (2009) Regional trends in soil acidification and metal mobilisation related to acid deposition. Environmental Pollution, 157 (1). pp. 313-319. ISSN 0269-7491Full text not available from this repository.
The deposition of high levels of reactive nitrogen (N) and sulphur (S), or the legacy of that deposition, remain among the world's most important environmental problems. Although regional impacts of acid deposition in aquatic ecosystems have been well documented, quantitative evidence of wide-scale impacts on terrestrial ecosystems is not common. In this study we analysed surface and subsoil chemistry of 68 acid grassland sites across the UK along a gradient of acid deposition, and statistically related the concentrations of exchangeable soil metals (1 M KCl extraction) to a range of potential drivers. The deposition of N, S or acid deposition was the primary correlate for 8 of 13 exchangeable metals measured in the topsoil and 5 of 14 exchangeable metals in the subsoil. In particular, exchangeable aluminium and lead both show increased levels above a soil pH threshold of about 4.5, strongly related to the deposition flux of acid compounds.
|Journal or Publication Title:||Environmental Pollution|
|Uncontrolled Keywords:||Acidification ; Aluminium ; Lead ; Nitrogen deposition ; Sulphur deposition|
|Subjects:||G Geography. Anthropology. Recreation > GE Environmental Sciences|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
|Deposited On:||24 Apr 2012 10:09|
|Last Modified:||07 Sep 2013 00:07|
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