Authors: V.I. Utimtsev, V.A. Androkhanov, O.A. Kupriyanov, F.G. Utimtsev

Title of the article: Fertile soil layer as a factor of recovery of zonal phytocenoses on coal industry dumps

Year: 2019, Issue: 6, Pages: 64-71

Branch of knowledge: 25.00.22 Geotechnology (underground, open and construction)s

Index UDK: 58.072*574.23

DOI: 10.26730/1999-4125-2019-6-64-71

Abstract: Areas of self-attack of coal industry dumps in the dry-steppe sub-zone of Khakasia, forest-steppe sub-zone of Krasnoyarsk Krai (KATEK) and subtaiga sub-zone of Kemerovo region (Kuzbass) were investigated. Ecological-cenotic characteristics of herbaceous communities are studied at application of fertile flat of soil and on man-made elution without application of soil-improving agents. Former arable land of the appropriate age is chosen as a control in each late. Geobotanical descriptions were carried out according to standard methods taking into account several repeats, floristic lists were processed using IBIS software. There is a decrease in species diversity as the aridity of the subzone increases: 38-52 species by habitat types are noted in the subtaiga, 34-40 species are noted in the forest-steppe, 20-31 species are noted in the dry-steppe. It has been established that in all three zones on the dumps the ecological-cenotic structure of grass communities of dumps is shifted by one step towards xeromorphism: on the dumps of the subtaiga late there are formed meadow phytocenoses, forest-steppe - meadow and meadow-steppe phytocenoses, in dry-steppe – ruderal phytocenoses. Application of fertile soil layer contributes to increase of herbal parameters: in the subthareal zone on such areas species abundance is 18% higher than on deposits, and in the dry-steppe subzone projective coating is 33% higher than on man-made elution without application of soil emitters. Thus, the presence of a humus horizon contributes to the acceleration of the formation of herbaceous ecosystems, but is not an unconditional factor in their achievement of the stage of zonal formations

Key words: open rock dumps KATEK Kuzbass Khakasia fertile soil layer phytocenoses ecological-cenotic groups edifiers assemblers

Receiving date: 15.11.2019

Publication date: 31.12.2019

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