During the analysis of geobotanical descriptions conducted for 35 and 55 years in two ash dumps of the Nizhnetourinskaya State District Power Station (NT-GRES) in different edaphic conditions (recultivated and non-cultivated territories), it was shown that on the ash in anthropogenous environment and with high recreational load, vegetation formation proceeds from small weeds ecotopic groups to mixed-grass - Vein and Calamagrostis phytocenosis. Recreational load delays the growth of tree species. Reclamation measures of the sanitary and hygienic and recreational character (covering the surface with a layer of clay soil) accelerate the formation of forest phytocenosis: by the age of 20-25 years, small-leaved forest has been formed from early succession species (Salix caprea L., Betula pendula Roth, Populus tremula L. and Pinus sylvestris L.). By the age of 30-35 years in the tree layer, late succession species have appeared as undergrowth: Abies sibirica Ledeb., Picea obovate Ledeb. In 20-25-year-old forest phytocenoses with reduced anthropogenic load on the ash with soil cover, the emergence of species of the Orchidaceae Juss family has been recorded. Watering with sewage contributed to the establishment of stable highly productive plant communities at the ash dumps of the NTGRES, which were transformed over time into reindeer phytocenosis with the dominance of Calamagrostis epigeios (L.) Roth.
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