міграція хімічних елементів

Purpose. To reveal the peculiarities of geo-ecological status of the lake-basin system (LBS) of Ozerians-ke lake for the needs of a balanced nature management. Methods.The research is based on methods of field instrumental landscape-geochemical searches using modern geoinformation technologies and laboratory-analytical diagnostics of soil, water and lake sediments. Results. The current state of economic development of the catchment of Ozerianske lake has been clari-fied. The results of the research of the hydrochemical composition of lake water have been presented. The results of the experiments with the determination of the content and features of radial, lateral migration of mobile forms of biogenic elements (N, P2O5, K2O) and heavy metals (Co, Pb, Cd, Cu, Zn, Mn) on a landscape soil geochemical microcatena within the catchment area of a lake have been analyzed. A slight excess of MPC in the content of Mn and Cd in the soils of the microcatena has been fixed. The feature of lateral migration of biogenic elements is the increase of their concentration from the eluvial to the superequal facies of the geochemical microcatena, and the radial feature is the decrease of their content with the depth of the soil profile. Moving forms of heavy metals (Co, Pb, Cd, Cu, Mn) are characterized by radial migration - increasing their content with the depth of the soil profile in the horizon (20-40 cm), and further towards the parent rock, their concentration mainly decreases. Conclusions. It was established that the catchment area of Ozerianske lake refers to the anthropogenic-natural (IV) type and has unsatisfying geo-ecological status. In order to improve the geo-ecological status of the catchment area, it is advisable to gradually increase the area of ecostabilizing lands (meadows, forests, forage areas); to control the application of mineral fertilizers and pesticide use, and to prohibit the plowing of land by a 50-100-meter coastal protective strip around the lake.

Purpose. To investigate the specificity of conjugation topical paradynamic landscape mixed-forest and forest-steppe complexes on the Left-Bank the Dnipro river of Ukraine territory on the example of test plots of their distribution. Methods. Laying transect method. Results. «The positional-dynamic landscape structure» is briefly defined as a complex of paradynamic landscapes territorial units at the lowest taxonomic level, and the specificity of its distinguishing are showed.The topical paradynamic landscape complexes, which have formed systems of conjugation as a result of lateral and radial migratory flows, and specific features of its development are characterized. Such migratory flows join topical paradynamic landscape complexes into a commoncascading system. The key features of spatial differentiation of the processes the chemical elements mobilization, translocation, and accumulation amounting to elementary paradynamic landscapes are depictured. The results of using the transects and graphical modeling of such landscapes on the example of mixed-forest and steppe-forest complexes exploration areas of the Left-Bank the Dnipro river of Ukraine territory are given. Conclusions. The topical paradinamyc landscape complexes territory of Left-Bank Ukraine is an objective basis for optimizing the design and implementation, as well as landscape-planning activities tailored just discovered the variety structure and differentiation of the internal organization of landscape complexes and systems, aggregate migration flows that link them into a single system and the knowledge of which enrich the science of information about the causes, and focus areas of distribution of physical-geographic processes and phenomena.