Object - the processes of accumulation of live organic matter in forest stands the Lviv region and their role in forming of regional general carbon budget.Purpose is an estimation of the productivity of the phytomass components and deposited carbon in dominating forest stands of Lviv region within the limits of forest growth zones. Methods - basis theoretical research of this dissertation is as common science methods (analysis, synthesis, observation, experiment and modeling), as special methods of perception, that were developed for forest assessment, forestry, physiology of plant and others. For solution of individual forestry tasks in order the research has been used biometrical and mathematical statistics methods (graphic-analytical, correlation and regression analysis).Novelty - the system of models for estimation of components of aboveground phytomass dynamics in forest stands of dominating species of Lviv region is firstly developed; the methodical approaches to the study of biological productivity of the forests are improved, which allow to calculate the amount of phytomass of Lviv region forests for forest-forming species groups (coniferous, harddeciduous, softdeciduous), age groups and tree breeds (pine, fir, silver fir, larch, oak, beech, hornbeam, ash, birch, aspen and alder); an informative resource on the base of SDBM Ms Access with the elements of OLAP-analysis is created; relation indexes of above-ground phytomass components in forest stands of dominating species of Lviv region are calculated to their growing stock in a bark; the dynamics of general phytomass and deposited carbon is modelled within the limits of forest growth zones; the prognosis economic evaluation of carbon-deposite functions of the forests of the Lviv region have been carried out. Results of researches - to solve the bundle of ecological, energetic and forestry issues, requiring a decision both in the region of researches and in the whole Ukraine, for the practical use are recommended: reference tables of phytomass components basic parameters dynamics and deposited carbon; mathematical models of estimation of phytomass components dynamics in forest stands of dominating species of Lviv region; relation indexes of above-ground phytomass components in forest stands of dominating species of Lviv region to their growing stock in a bark. Field - forestry.
