The main purpose of the work was to determine the methods of mining enterprises wastewater secondary treatment from nitrogenous compounds. The chemical analysis of wastewater was carried out, and substances with exceeding concentrations were established. The accumulating power of indigenous species of higher aquatic vegetation has been estimated. The absorption regularities of nitrates of duckweed (Lemna minor) in solutions with different concentrations were determined. The expediency of duckweed cultivating with the aim of phytoremediation has been proved.
Has been presented the authors’ development demonstrating the possibility for determining the atmospheric air pollution in urban forest’s various areas by «passive» dosimetry’s methods. On the example of nitrogen oxides have been analyzed causes and consequences for technogenic pollution of forest ecosystems in urbanized areas. The study conducted on the territory of the Kuntsevskaya dacha’s spruce forest which is the part of the natural reserve «The Setun River’s Valley» (Moscow) has shown that in certain areas within a forest range, nitrogen dioxide accumulation in the air-ground interface can occur. Have been revealed the signs of increased nitrogen status for the investigated forest ecosystem.
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