Affiliation:
1. Lomonosov Moscow State University
Abstract
In the Tula region, to analyze the fractionation of Mn in the soils effected by acid sulfate water, at 11 points (a total of 57 samples), we studied electrical conductivity of the water extract, the granulometric composition, pH, the concentration of total organic carbon and the three mobile fractions (exchangeable, complexed, and specifically sorbed) the metal. Technosols of a waste heap with a predominantly very acidic medium often have sulfate salinity. Acid sulfate water and solid-phase matter from the waste heap form talus, which bury highly productive Chernozems and Phaeozems. In terms of the fractionation of Mn, bared Regosols (Phytotoxic) at the talus are close to the toxic substrates of the waste heap, and plant-covered Regosols are close to the background Chernozems. In the transported material of plant-covered Regosols, the content of Mn mobile compounds increases. The input of acid sulfate water into the A-horizon of Chernozems increases the content of water-soluble \({\text{SO}}_{4}^{{2 - }}\) and Ca2+ and decreases the content of mobile compounds and the total content of Mn.
Publisher
The Russian Academy of Sciences