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ECOLOGICAL ASSESSMENT OF THE STATE OF ROCKS IN THE OF RECLAMATION PROCESS IN THE NIKOPOL MANGANESE ORE BASIN

Improving the technology of reclamation of disturbed lands, leading to the formation of technozems is justified. Parameters of changes in edaphic characteristics of technozem models of different quality in lithogenic composition depending on time as a factor of soil formation in the conditions of the Pokrov experimental station of land reclamation were determined. The long-term (more than 50 years) impact of intensive phytomelioration contributed to an increase in nutrients in technosols, optimization of physical and biological properties was determined.The loose, crumbly rocks of tertiary and quaternary deposits deposited at the dumps form edaphotopes that have no analogues in nature. Disturbed rocks do not retain their former physical, chemical and biochemical properties and are characterized by a large heterogeneity, complex soil and environmental conditions: a low content of nutrients and lack of moisture for vegetation and microorganisms producers of soil enzymes. Features of growth of enzymatic activity in the formation of "young" soils were revealed. Gradation of the degrees of biogenicity of edaphotopes by enzyme activity has been improved. The content of trace elements in plants grown on rocks was studied.