Здатність деревних видів акумулювати важкі метали в умовах нафтозабруднених ґрунтів

The peculiarities of chemical elements accumulation by woody plants under conditions of Bytkiv-Babchynske oil deposit influence are investigated. X-ray fluorescence concentrations of aluminum, zinc, titanium, ferum, strontium, nickel, kuprum, arsenic, bromine, rubidium, molybdenum, palladium, argentum, plumbum, and vanadium in the dry mass of Acer platanoides L., Tilia cordata Mill., Fagus sylvatica L., Populus tremula L., Betula pendula Roth., Corylus avellana L. leaves under oil-contaminated environment are determined. With the help of CorelDRAW and ImageJ programs, the percentage of necrotized tissue of woody plants assimilation organs under the conditions of oil deposit is calculated. A direct proportional relationship between the necrotic lesions of leaf blades and the accumulation of chemical elements by plants is established. Absence of arsenic, bromine, molybdenum, palladium, argentum, plumbum, vanadium in Acer platanoides, Tilia cordata, Fagus sylvatica leaves is recorded. The growing content of chemical elements in the assimilation organs of the experimental trees is revealed in the following range: Mo → Pb → Pd → Ag → Br → As → V → Ni → Rb → Cu → Sr → Ti → Zn → Fe → Al. The percentage of leaf necrotization under conditions of Bytkiv-Babchynske oil deposit is increasing in a following range of experimental plants: Fagus sylvatica → Acer platanoides→ Tilia cordata → Populus tremula → Betula pendula → Corylus avellana. The maximum accumulative capacity of chemical elements is possessed by Corylus avellana L., minimum one – by Fagus sylvatica and Acer platanoides Because of the considerable cumulative resources of Corylus avellana, it is advisable to use the species as a phytoremediant of contaminated environment by chemical elements. Fagus sylvatica and Acer platanoides belong to the eliminator plants that absorb toxicants from the environment selectively and in small quantities due to the presence of powerful protective mechanisms in these species. Tilia cordata, Populus tremula and Betula pendula are marked by valuable bioindicator characteristics and can be used to assess the environmental stress level.