Svynchuk V. Peculiarity of biometric structure, wood sort and merchantability structure of artificial Pine forest stands in the Western and Central Polissa of Ukraine

Object - regularities of distribution and interrelations of biometrics parameters of trees in artificial forest stands. Aim - to establish the biometrics characteristics of form and form factor for stems, regularities of structure of artificial Pine stands and to develop the appropriate norms their dimensional-quality structure on demands of forest inventory and forestry. Methods - the technique of investigation is based on modern techniques of collection and treatment of inventory dates, oriented on informational technologies. Purring the investigations the analysis and generalization of research results were done with mathematical statistics methods, in particular multiple correlation and regression analysis and multidimensional mathematical modeling with adherence to main principles of system approach. The collection of research information was fulfilled according to current instructions and adequation of mathematical models the typical statistical methods are used. The comparison of obtained results was done with graphical and analytical ways also. Novelty - in first for artificial Pine forests of Western and Central Polissya of Ukraine the mathematical models of forms and form factors are done and tables of stem volume by diameters and height are created. In first the parameters mathematical models of dimensional-quality structure of stems in premature and mature artificial Pine stands and sort tables are substantiated. In first regularities of biometric structure of premature and mature artificial Pine stands are established, general Rows of distribution of trees by diameter classes depending on average diameter and percent of merchantable trees are obtained and norms for sort structure determination are developed. On the basis of generalization of inventory data base the integral forestry and inventory characteristics of artificial Pine stands in Western and Central Polissya of Ukraine are improved. Results of research - for implementation in practice of forest inventory and forestry the follow is being proposed: mathematical models of volume and dimensional-quality structure of Pine stems in analytical and table forms, sort table and merchantable for evaluation of growing stock in premature and mature artificial Pine forests. Branch - forestry.