MONITORING OF COPPER, LEAD AND ZINC IONS DISTRIBUTION ALONG THE SOIL PROFILE OF PINE PLANTATIONS IN THE CITY OF PERVOURALSK (SVERDLOVSK REGION) IN THE ZONE OF TECHNOGENIC IMPACT

Abstract

The results of 10-year monitoring of heavy metals accumulation in the emission zone of technogenic pollution of Pervouralsk, Sverdlovsk region, are presented. The study was conducted on the gradients of pollution in pine plantations of the forest park and green zones of the city in order to study the accumulation of copper, lead, zinc ions in the soil profiles of sod-weakly podzolic soils. It was found that the bulk of metals accumulates in the litter and migrates down the profile in a small amount. Soil contamination by mobile forms of lead and zinc ions increased 2-4 times during the observation period. The study of the ratio of mobile forms of copper to its gross content in the soil showed that against the background of a significant increase in gross forms of copper up to 263%, the proportion of mobile forms is only 5-17%. A reliable correlation of soil acidity in the pH range of 3.97-5.71 with mobile forms of copper and zinc ions was revealed. The data obtained indicate that pollutants of hazard classes 1 and 2 have been removed from the migration flow and deposited by forest soils, which contributes to slowing down the pollution of the territory.