ECOLOGICAL AND GEOCHEMICAL EVALUATION OF THE HEAVY METALS CONTENTS IN THE COMPONENTS OF THE LANDSCAPE IN KIVERTSI NATIONAL NATURE PARK “TSUMANSKA PUSHCHA”

• Date: 2021
• Main Authors: Сплодитель, А.О., Кураєва, І.В.
• Format: Article
• Language: Ukrainian
• Published: Institute of Geological Sciences, NAS of Ukraine 2021
• Subjects: форми знаходження; важкі метали; коефіцієнт біологічного поглинання; фонові показники; УДК 504.064.3; (550.4; 546.3–34)(477.62); forms of occurrence; heavy metals; biological absorption coefficient; background indices
• Online Access: http://geojournal.igs-nas.org.ua/article/view/217344
• Journal Title: Geological journal

The study presents the results of the spatial distribution of the heavy metal contents in separate components of the landscape of Kivertsi National Nature Park “Tsumanska Pushcha”. The article provides the quantitative indices of the heavy metals contents, which represent the intensity, character, and specificity of the accumulation in the soil horizons. Concentrations of the microelements fluctuate depending on the lithological type of deposits, their facies affiliation, and localization in the drainage basin. The contents of nickel, cobalt, lead, chromium, vanadium, manganese, and copper are characterized by significant divergence from their average concentrations, though it doesn’t exceed their estimated abnormal indices. Most of the studied heavy metals in the soil exceed the regional geochemical background. The biggest accumulation of copper and zinc is taking place in the forest floor, and the mineral part of the profile is lightly marked by alluvial and illuvial character. The contents of nickel, cobalt, and manganese are increasing with the depth with the accumulation of these elements, which are typical of the chemical contents of glacial deposits. The forest floor is distinctly playing the role of a barrier that prevents copper from penetration into the inner levels of occurring soil horizons. The paper defines the dependence of the heavy metal contents in plants of the national nature park on the level of technogenic load and characteristics of the soil covering of the territory. With the increase of the heavy metals in soil, they accumulate in plants. Though, with the distance from the source of contamination, the contents of the heavy metals in plants decrease by 10-20 mg/kg. The study of the most common plants, which grow on the soils of diverse mechanical contents, revealed that the plants which grow on sod-podzolic sandy soil display the biggest number of microelements, while those growing on bog soil and peat bogs. The main part of the exceeding background indices according to the elements has been found in sample areas westwards. All plants under research accumulated Mn, Cu, Cr to a maximal extent while Zn and Ti to a minimal extent, which is in accordance with elements migration of this group. The main directions of further research include the study of heavy metals distribution in diverse genetic types of the soils; definition of the standard contents of the elements in geochemical landscapes needed to identify the intensity of migration and character of elements distribution; performance of biochemical zoning.