Zadorogniy A. Structure of aboveground phytomass of beech and spruce forests stands of the Polonyn ridge of the Ukrainian Carpathians

The object of research - is the peculiarities of the formation of the structure of the aboveground trunk phytomass of beech and spruce stands. The subject of research is the phytomass structure of beech and spruce stands in the most common types of forest vegetation conditions of the Polonyn ridge of the Ukrainian Carpathians. Theoretical substantiation and practical application of the developed methods for finding and constructing a system of mathematical dependences of basic, natural and density in absolutely dry state of components of aboveground trunk phytomass of trees and stands of forest beech and European spruce on taxonomic features of trees and on the value of average taxonomic indicators of trees. Based on them, tables of phytomass components (wood and bark of the trunk, branches of the crown, leaves or needles, respectively) and tables of components of aboveground trunk phytomass (wood and bark of the trunk, branches of the crown, leaves or needles, respectively) for beech and spruce stands of Polonynsky ridge depending on the average values of height and diameter of the trunk and relative completeness. The peculiarities of the phytomass structure of the studied stands are established. Indigenous beech stands are dominated by derived spruce stands in the same forest types in terms of the total stock of aboveground phytomass of trunks. The structure of the aboveground trunk phytomass of the studied stands also differs, in which for beech stands the phytomass of the trunk, trunk in the bark, branches and twigs in the bark predominate, which indicates a fuller use of their biological potential.