Аграрный вестник Урала № 04 (146) 2016Экология
ASSESSMENT OF MEGALOPOLIS RECREATIONAL AREAS BY HEAVY METALS POLLUTION (ON EXAMPLE OF EKATERINBURG)
Many of the major Ural cities, including Ekaterinburg, characterize the complexity of the geological structure and the presence of areas with high natural content of heavy metals. In particular, areas with underlying ultramafic rocks contribute to high concentrations of some heavy metals in the soil, such as nickel, copper, chromium, cobalt, zinc. The condition of urban soils environmental and health characterizes the environment. A special place in the structure of cities is urban parks and forest parks, which are primarily recreational functions, aimed at improving and maintaining the health of citizens. Information about heavy metals contamination of soil cover of different cities, usually affect only the surface layer of soil. However, it should be noted that in many cases, anthropogenic contamination of soils in the cities is in terms of natural geochemical anomalies. Thus, the soils become a source of secondary pollution of the surface layer of the atmosphere, surface water and groundwater. On the territory of the Ekaterinburg city the heavy metals content in the soil of recreational areas was studied.It is shown that the prevailing pollutants within the parks and forest parks are Pb, Cu, Ni, Cr, Zn. The index of total soil contamination of recreational areas does not exceed the average level (Zc ≤ 22). It was found that the chemical composition of underlying rocks may have a significant impact on the overall level of heavy metals in the soil of the city parks, resulting in the need to integrate this load during the pollution monitoring of urban soils.
heavy metals, geochemical anomaly, soil, forest park.
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