Bondar A. Silviculture principles of forming of high productive stands in Podilla's oak forests

Object: processes of growth and accumulation of organic matter in Podilla's oak forests are the object of dissertation investigation.Objectives: exhaustive study the reasons that affect on biology stability and productivity of natural seed origin and partial cultures forests of oak, that have been planted on cut areas of oak forests in Podilla.Methods of investigation and apparatus: methods of biometrics and forest inventory, methods of silviculture, agricultural chemistry and physiology.Theoretical and practical results: - theoretical hypothesis that describe process of creation of partial dense cultures in Podilla's oak forests is given; - it have been identified types of planting materials, that are expedient for cultures plantation on cut areas, disposals of planting rows in partial cultures, mixtures and schemes of tree species in complete cultures, intermediate cutting intensity in all age groups; - the geographical ecotypes for oak of intensive growth and high productivity have been investigated; - forest regions for gathering of acorns for forest planting have been defined.Newness of introduced: - it is defined, that moderate intermediate cuttings, even in stands with narrow planting width, provide a forming of straight, low taper stems with big sup-wood and compact crown; - an increment of branch and steam masses and stem diameter is synchronous; - it is defined, that partial cultures by decrease of planting width the number of oak trees, its stem volume, valuable wood sorts and cost increase; - the dependency of oak vitality on intermediate cutting and row width in partial cultures are firstly shown.Level of applying: on the territory of Ukraine the main results of dissertation investigation (the recommendation that describes process of creation and growing of cultures in Podilla's oak forests) are applied of the State forestry associations of the State committee of forestry of Ukraine.Field of applying: forestry.