Acidification status of Norwegian forest soils as evident from large scale studies of humus samples
1993
Steinnes, E. | Flaten, T.P. | Varskog, P. (Trondheim Univ. (Norway). Dept. of Chemistry) | Laag, J. | Boelviken, B.
The acidification status of forest soils in seven counties in Norway was studied on the basis of chemical analysis of 3000 humus samples collected in a regular grid pattern. In samples with more than 70% organic matter the base saturation decreases gradually from 25% in the northernmost county Nord-Troendelag to 10% in the Agder counties far south. Base saturation shows a slight increase with increasing organic matter content in southern and southwestern Norway, but a strong decrease in more northerly areas. In southeastern Norway there is a regular decrease in pH and base saturation from north to south, and these differences have apparently increased between 1962-64 and 1984, indicating enhanced soil acidification in the south possibly related to acid deposition from the atmosphere.
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