Rybak V. Bioecological and silviculture grounds of production process management in Pine cenosis of Ukrainian Polissya

In the dissertation the new direction of production process management in Pine cenosis of Ukrainian Polissya through optimization of bioecological parameters and ceno-sis and development by intermediate cutting have been elaborated.In the first time a science substantiation of criteria for intermediate cutting are done, and on their base the models of thinning for different age groups and growth classes in Pine cenosis have been developed. A methodic of control of thinning parameters adher-ence have been proposed for various cutting types. In the first time correlative dependences of some biometrics stand characteristics on crown size in ontogenesis are determined, and possibilities for crown morphological gene-sis management have been investigated.Peculiarities of forest soil genesis under simple and mixed cenosis are studied, their evtrophysation rate and parameters have been determined. Expediency of shade-tolerant and fast-growing deciduous tree and shrubs species introduction, that do not disturb ceno-sis structure and in short time intensify nutrition biological cycle and stand growth, under Pine cenosis canopy has been substantiated.In the first time the substantiation of ecological approach to forest soil fertility pres-ervation has been done.Monitoring of natural regeneration of tree and shrub species under Pine cenosis can-opy in edaphic sites A2, B2 and C2 has been fulfilled. Intensity and quality characteristics of natural regeneration depend on edaphic sites, age and stand density, biological peculi-arities of regenerated species have been investigated.Substantiation of measures for reconstruction and preservation of biodiversity has been done.