Abstract
-The state of forest ecosystems and processes of carbon sequestration have both global and local significance upon investigating the influence of natural and anthropogenic factors on biogeochemical cycles. The study of the consequences of their impact on forest stands is initiated by international and state environmental programs aimed at solving the problems of climate change. Sequestration of carbon in the biomass of forest stands depends on the productivity of stands, the formation of tree mortality and the conduct of economic activities. The purpose of the study was to establish the regularities of changes in the reservoir of sequestered carbon in the biomass components of the stands in the garden art park-monument “Feofania”. The processes of transformation of forest ecosystems were investigated on permanent experimental plots of the “Feofania” Park territory using the methods of forest inventory. The observations results confirmed the general increase in the reservoir of sequestered carbon in the biomass of tree stands and the multi-vector dynamics of the sequestered carbon structure in the live biomassand mortmass of tree stands. Evidence of decrease in the carbon-sequestering potential of stands under intense mortality and lesser increase in the live biomass of stands was obtained. From an ecological standpoint, a positive trend towards an increase in the share of coarse woody debris (mortmass) in the biomass structure of permanent plots was established. The main carbon structure of biomass, according to the species composition, is represented by common oak, common hornbeam, and Norway maple. Nature protection decisions and measures implemented in the territories of the natural reserve fund should increase the intensity of carbon sequestration in biomass and the resistance of forest ecosystems to the influence of environmental factors. Given the priority of carbon sequestration in the biomass of tree stands as an ecological function, it is necessary to practice measures to promote current increment in carbon sequestered in the biomass and increase the resistance of trees to natural and anthropogenic disturbance