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The processes of soil formation and its fertility are influenced by various factors, including concentration of various elements and substances. In the course of this study, soil samples were taken from different districts of the Vologda Oblast. Chemical composition of the samples and the humus formation index were determined. Based on the results obtained, the dependences of the humus formation index on the content of some cations and anions were established.

Determining the humus formation index of forest soils of the Vologda Region