%A I. V. Khomiak %A O. V. Harbar %A N. S. Demchuk %A I. Y. Kotsiuba %A I. P. Onyshchuk %J Forestry ideas %T Above-ground phytomass dynamics in autogenic succession of an ecosystem %X It was found that a regular growth in the above-ground phytomass occurs during autogenic succession, which is approximated by logarithmic dependence with high reliability indices. External, including anthropogenic, effects on the process of succession lead to a decrease in the rate of phytomass growth. Besides, the rate of phytomass changes is influenced by endo-ecogenesis caused by various plant species, entering the ecosystem at certain stages of succession. The above-ground phytomass portioning behaviour makes it possible to use it to create a unified indicator of dynamics. Each plant species can be only within certain indicators of the phytomass of their plant communities. At the same time, there is a normal distribution of the projective cover value. This allows us to work out synphytoindication methods for determining the dynamics indicator %N 1 %K anthropogenic transformation, ecosystem dynamics, synphitoindication analysis, Ukrainian Polissia. %P 136-146 %V 25 %D 2019 %I University of Forestry, Sofia, Bulgaria %L zu229830