Journal
WATER AIR AND SOIL POLLUTION
Volume 130, Issue 1-4, Pages 1025-1030Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1013904211461
Keywords
soil acidification; biodiversity; forest ecosystems; ordination
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Variations in soil acidity and in biodiversity were analysed in the National Natural Park Russian North, European Russia. Improving soil quality from podzol, podzolic soil, derno-podzolic soil, brown earth to pararendzina leads to increase in diversity and changes in floristical composition, followed by changing of pine and spruce forest to mixed and birch forests. In PCA ordination species diversity, richness and evenness of trees, shrubs and vascular plants are closely connected with each other, and are represented by the first principal component. They are strongly correlated to the thickness of Al horizon, pH(H2O) and pH(CaCl2) in organic, surface and subsurface mineral horizons. Only bryophyte species richness and diversity are directly related to the thickness and weight of organic horizon, soil exchangeable acidity, and inversely related to the thickness of Al horizon and pH. Thus, the ordination of the major species diversity variables is highly related to soil pH, suggesting that pH is the best soil related predictor of species diversity parameters. Our study shows that plants notably respond to soil acidification in boreal forest ecosystems.
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