Abstract
The article considers the distribution of mobile forms and bulk concentrations of Zn, Cu, Ni, Co in the genetic horizons of the studied soils at the studied area in the central part of the Valday Upland. The contents of easily soluble, exchangeable, and sum of potentially mobile forms of elements were determined by extraction method. It was found that in all genetic soil horizons, the bulk Zn content and the concentration of its mobile forms are higher than those of other elements, but Cu demonstrates the most intense migration. The predominant form of Cu migration is complexes with organic compounds. According to the calculated data of the extraction criterion (EC), the studied soils are background. The availability of Zn, Cu, and Co in the soils was estimated, which characterizes the potential reserves of elements as plant nutrients.
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