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Effect of long-term changes in soil chemistry induced by road salt applications on N-transformations in roadside soils

Green, S.M., Machin, R. and Cresser, M.S. (2008) Effect of long-term changes in soil chemistry induced by road salt applications on N-transformations in roadside soils. Environmental Pollution. pp. 20-31. ISSN 0269-7491

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Abstract

Of several impacts of road salting on roadside soils, the potential disruption of the nitrogen cycle has been largely ignored. Therefore the fates of low-level ammonium-N and nitrate-N inputs to roadside soils impacted by salting over an extended period (decades) in the field have been studied. The use of road salts disrupts the proportional contributions of nitrate-N and ammonium-N to the mineral inorganic fraction of roadside soils. It is highly probable that the degree of salt exposure of the soil, in the longer term, controls the rates of key microbial N transformation processes. primarily by increasing soil pH. Additional influxes of ammonium-N to salt-impacted soils are rapidly nitrified therefore and, thereafter. increased leaching of nitrate-N to the local waterways occurs, which has particular relevance to the Water Framework Directive. The results reported are important when assessing the fate of inputs of ammonia to soils from atmospheric pollution. (c) 2007 Elsevier Ltd. All fights reserved.

Item Type: Article
Copyright, Publisher and Additional Information: © 2008 Elsevier B.V. This is an author produced version of a paper published in Environmental Pollution. Uploaded in accordance with the publisher's self-archiving policy
Keywords: road salt, ammonification, nitrification, roadside soils, DEICING-SALTS, SODIUM-CHLORIDE, NITROGEN MINERALIZATION, ORGANIC-MATTER, SURFACE WATERS, HEAVY-METALS, DEPOSITION, MOBILIZATION, RETENTION, RESPONSES, Environmental Science, Environmental Chemistry, Pollution
Institution: The University of York
Academic Units: The University of York > Environment (York)
Depositing User: Repository Officer
Date Deposited: 08 Apr 2008 17:19
Last Modified: 16 Nov 2014 01:01
Published Version: http://dx.doi.org/10.1016/j.envpol.2007.06.005
Status: Published
Refereed: Yes
Related URLs:
URI: http://eprints.whiterose.ac.uk/id/eprint/3733

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