| Summary: | The vast territory in the south-western periphery of the Altai-Sayan mountain country is identified as a special physical-geographical region - Rudny Altai. High rainfall and a considerable amount of heat provide the development of the peculiar forest formation in the region known as black taiga, where the Siberian fir is the main forest forming species. Pyrogenic factor along with timber harvesting is very important in the formation of the composition and structure of the forest area of Rydny Altai. Study objective was to determine the age stages of fir natural regeneration on the burnt areas. The main tasks were to analyze the dynamics of post-fire recovery of the fir stands and the study of natural regeneration processes on the burnt areas. When collecting primary data for the study of forest dynamics we adhered to the generally accepted methodological approach. Forest dynamics analysis was carried out within the same boundaries. Taxation parameters of allotments and their categorization for a few forest inventory periods were discharged for the selected land plots. A.V. Pobedinskiy discount areas method was used to study the natural regeneration. As a result of the study the natural regeneration processes of Siberian fir were revealed, fir undergrowth quantitative parameters at different stages were established and reforestation success was evaluated. Poor natural regeneration in the first two stages of the forest forming process was noted. Fir undergrowth was met extremely rare and only in close proximity to the forest edge or surviving separated fir groups. It was found that the recovery and formation of the vegetation for the first post-fire 150 years in grass ferny fir forest conditions pass through three consequent recovery and age-related stages. The first stage is the recent burnt areas, which are characterized by complete loss of all the components of biocenoses. Secondary insects start to attack the parent forest stand debris as well as windfall. The grass and shrub associations and deciduous ...
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