Derekh O. The impact of recreation on the functioning of forest ecosystems with dominant forest types in green zone of city of Lviv.

Object of the research - beech and oak forest stands of green zone of the city of Lviv. The aim to study is to identify features of human impact on the basic components of beech and oak stands of Lviv green zone, and work up conceptual foundations of increase intheir stability in terms of Opole. Research methods - methods of comparative ecology, and generally accepted ones in forestry, forest inventory, dendrochronology, heobotanics and soil science, microbiology. The main theoretical principles of the research, determining the scientific novelty are as follows: first it was established the minimum level of CO2 emissions from soil for beech and oak forests of green zone of city in terms of Opole which is characteristic for areas with the highest anthropogenic load, where it reaches the lowest porosity. The complex micromycetes typical species that form the structure of mycological soils with different stages of digression were determined for beech and the oak stands. It was estimated the changes in the physical and chemical properties of soil in the areas with high digression stage where the reduction of humus content, the growth of content moving nitrogen and potassium and the increase of density and the reductionof soil porosity are marked. It was found a significant inverse correlation between the stage of digression plantations and forest floor thickness and the number of seedlings under a tent with stands. The regularities of reaction on trees and their undergrowth on the impact of recreation make it possible to predict the development of destructive processes in forest stands of green areas of settlements. Practical significance. Revised economic trends in recreational forests, offers concerning the expansion of recreational potential within the analyzed region were implemented in enterprises of Lviv Regional Forestry and Hunting. Some research results and practical recommendations of the thesis are used in the Ukrainian National Forestry University. Areas of application - forestry.