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Research article - Peer-reviewed, 2004

Episodic acidification in northern Sweden: a regional assessment of the anthropogenic component

Laudon H, Westling O, Bergquist A, Bishop K

Abstract

Spring flood is the period in boreal ecosystems that is most sensitive to acid deposition since as much as half of the year's precipitation melts and enters streams or the soil in the space of a few weeks. The 'Episode Project' in northern Sweden found a consistent relationship between the SO42- concentration of snow and the anthropogenic component of acid neutralization capacity (ANC) decline during spring flood. This correlation creates the possibility for a regional prediction of the severity of SO42- anthropogenic episodic acidification during spring flood episodes using deposition data together with chemical data from 1240 lakes selected to be representative of northern Sweden. The regional assessment found that in 1998, ca 6% of the region was seriously affected by anthropogenic acidification during spring flood. The results from this study have important implications for both the national liming strategy and international negotiations to further reduce emissions of air pollutants in Europe. (C) 2004 Elsevier B.V. All rights reserved

Published in

Journal of Hydrology
2004, Volume: 297, number: 04-jan, pages: 162-173
Publisher: ELSEVIER SCIENCE BV

    SLU Authors

    • Laudon, Hjalmar

      • Department of Forest Ecology, Swedish University of Agricultural Sciences

      • UKÄ Subject classification

      Environmental Sciences related to Agriculture and Land-use

      Publication Identifiers

      DOI: https://doi.org/10.1016/j.jhydrol.2004.04.013

      Permanent link to this page (URI)

      https://res.slu.se/id/publ/3433