Accumulation and distribution of microelements in organs and tissues of Oxytropis myriophylla (Pall.) DC.

УДК 581.192

Abstract

The problem of pollution of environmental objects with inorganic ecotoxicants is extremely relevant, especially in conditions of intensive urbanization. In the conditions of the city of Chita, the formation of a technogenic biogeochemical polyelement anomaly associated with the impact of transport and industry in a sharply continental climate was revealed. The object of the study was Oxytropis myriophylla, which is characterized by high resistance to environmental pollution. The purpose of the work was to study the characteristics of the accumulation and distribution of Mn, Fe, Cu, Zn, As and Pb in the leaves and roots of O. myriophylla. It was revealed that microelements accumulated most intensively in the underground organs of the species, especially in areas affected by transport infrastructure, as well as on the dumps of a mining and processing plant. Zn and Cu were of technogenic origin, while As and Pb are elements associated with polymetallic ores, and Mn and Fe have high levels of accumulation in the soil cover of the region and characterize natural biogeochemical anomalies. Compared to the standard indicators, O. myriophylla plants from points in the city of Chita and the village of Orlovsk had excesses, while for environmentally safe points - the village of Ilya and Yablonovy Ridge - no significant accumulation was detected.