Microbiological features of the soil cover in the residential zone of Perm city

Results of the ecotoxicological research of a soil cover in residential zone of Perm city (n=214) conducted in May-June, 2016 are presented in article. On the basis of the given expanded microbiological monitoring and microbiotesting of city soils assessment of level of their biological activity, degree of epidemiological danger and toxicity is carried out. City soils were characterized by low and average content of organic chemistry (humus), neutral or average/subacidic reaction, low humidity, and, as a result, low degree of microbiota saturation. Connection between quantity of microorganisms in city soils and soil type, its humidity, content of organic substance is established. The quantity the geterotrophic bacteria was reliable less in the urban soils and correlated with the level of soil toxicity. Anthropogenous load of the soil, according to assessment of her sanitary and chemical indicators, was high that testifies to trouble and the increased risk of infection in some districts of the city.