Abstract
As a result of a generalization of 45-year monitoring observations at on the ash dump of the Verkhniy Tagil Power Station, the absolute time scale was made, stabilization rates during succession of different plant communities characteristics were assessed in two areas: recultivated and non-recultivated. Recultivation consisted of clay strips applying (5–8 m wide, 10–15 cm thick) on ash surface. All characteristics of plant communities (total projective cover by plants, total number of species in plant community) are formed 15–20 years faster in recultivated area. So, a simple technical recultivation, (clay strips applying), significantly accelerates the formation of plant communities main characteristics on ash surface in subzone of the southern taiga in Middle Urals.
Highlights
Ural is an old industrial region of Russia, where mining lasts on large areas for over 100 years
Ash from Verkhniy Tagil Power Station (VTPS) ash dump is extremely poor in nitrogen has a high content of mobile phosphates and has a low content of potassium pH of the ash sample is weakly alkaline [9, 10]
If the results of our studies showed that during observation period stabilization of considered communities characteristics did not occur, the rate of formation of characteristics was estimated by the time they reached randomly selected values
Summary
Ural is an old industrial region of Russia, where mining lasts on large areas for over 100 years. One of the forms of anthropogenic disturbance of landscape is ash dumps of thermal power plants. Occupying large territories, they are constant sources of air and soil pollution. Restoration of vegetation on such substrates is extremely slow [1, 2] To speed up this process, recultivation work is necessary. Laboratory of Industrial Botany of the Ural Federal University has developed an economical method of recultivation – applying soil strips to the surface of ash dump. This method was tested at ash dump of Verkhniy Tagil Power Station
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