лесные экосистемы

Relevance. The development of measures to prevent possible negative environmental, economic and social problems in forest ecosystems should be based on objective information, which may be provided by the process of landscape-environmental planning. Purpose. Analysis of the conflicts of nature use from anthropogenic activity in forest ecosystems to develop measures optimization of environmental management in the process of landscape-ecological planning. Methods. The assessment of conflicts of nature use in forest ecosystems was carried at the test site of the tract "Zarudska Dacha" of Lyubovytsi forestry of the Malinsky district of Zhytomyr region according to the author's method of landscape-ecological planning. Results. Based on the results of the inventory and evaluation phase of landscape-ecological planning, we have obtained information about the landscape differentiation of the test area, internal and external sources of envi-ronmental conflicts, their boundaries, and intensity. The study of the structure of forestry has shown that the sources of conflict are predominantly forest areas and settlements landscapes. The assessment of intensity of the conflicts has shown that medium-intensity conflicts prevail in the territory. Based on the information of matrices of the conflict measures to optimize the use of nature in forest ecosystems have been developed. Conclusions. For optimization of nature use in forest ecosystems, it is recommended: restoration of plantations, control of rational use of forest resources, reduction of the volumes of use of the chemical means on the adjacent fields, organized garbage collection, controlled recreation, etc.

Purpose. The study of changes in the main agrochemical parameters in the upper layers of the gray forest soils of the Left Bank Forest-Steppe of Ukraine that were removed from agricultural processing and forested with pine, in different years. Methods. Theoretical methods included the collection and description of facts, their analysis. Empirical methods involved conducting field research on test plots of the state-owned enterprise “Chu-guevo-Babchansky LG” and farm near woodlands. Laboratory and analytical studies were performed using standardized measurement methods. The generalization of the experimental data was performed using applica-tion software packages. Results. Studies were carried out on soils under natural forest plantations, soils in inten-sive agricultural processing and unproductive soils that are derived from agricultural use. In all the studied soils, the main agrochemical parameters were compared among themselves: mobile forms of nitrogen, pH, humus content, content of common forms of nitrogen, phosphorus and potassium. Statistical dependences between agrochemical parameters in the studied variants were established. Conclusions. The results obtained indicate the revitalization and development of humification and accumulation of nutrients in old arable gray forest soils with an increase in the duration of exposure to pine forest. The age stages of the forest determine the specifics of the environmental factors that influence the soil-forming processes. In the soil of a young pine-tree (12 years), there are more cases of an increase in the coefficients of spatial variation. This indicates that the formation of young ecosystems are characterized by low resistance, in these biocenoses the dynamic equilibrium is not reached, which is characteristic of more mature pine forests.