Abstract

The effect of pollution by fluorides from aluminum production on the humus status in different types of arable soils was studied in field experiments. They included modeling of a high pollution level by addition of NaF prevailing in industrial air emissions. The negative effect of fluorides on the humus status, related to an increase in the mobility of humic substances, was more pronounced in gray forest soil than in sod-meadow soil. This depended on the soil physicochemical properties determining the buffer capacity toward NaF and the content of water-soluble fluorides.

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