Geoecological assessment of soils in urban areas (on the example of Birobidzhan)
The assessment of the ecological state of soils based on the proposed priority indicators was carried out on the example of the middle city of the Russian Far East (Birobidzhan), taking into account the developed priority indicators, the degree of soil transformation was determined, the influence of regional natural geochemical, climatic features, planning structure and the main sources of pollution on the concentration of heavy metals in the natural components was shown. Zinc, lead and copper are the main elements at the range of toxic substances contaminating soil. From 2003 to 2018, the content of heavy metals in soil has doubled due to mobile sources of pollution, power plants and boilers. The ecological state of soils in different functional zones of the city was determined by the special point scale developed for assessment of depositing environment.