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Acidity of podzolic soils subjected to sulphur pollution near a Cu-Ni smelter at the Kola Peninsula

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Abstract

The acidity of the podzolic soils in coniferous forests on the northern tree line (Kola Peninsula) subjected to severe sulphur pollution is considered. The pH values of precipitation were positively correlated with the distance from the pollution point source. There was also a correlation between base saturation of the organic horizon and distance. The long-term SO2-emissions have resulted in the higher leachability of base cations and dissolution of fulvic acids in the humus horizon. In polluted areas the flux of H+ from the organic layer could be stronger owing to higher proportion of hydrolysable humus compounds. Inputs of H+ from the atmosphere and humus horizon have resulted in the higher concentrations of the exchangeable aluminium in the illuvial horizon.

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Lukina, N., Nikonov, V. Acidity of podzolic soils subjected to sulphur pollution near a Cu-Ni smelter at the Kola Peninsula. Water Air Soil Pollut 85, 1057–1062 (1995). https://doi.org/10.1007/BF00477121

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  • DOI: https://doi.org/10.1007/BF00477121

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