Study of the soil cover of technogenic territory in Eastern Siberia (environmental aspect)

The article presents new experimental data on the aerotechnogenic influence of aluminum plants on soil covering. Today this problem is relevant and environmentally significant. We have determined the indicators of alkaline-acid soil conditions, and revealed a tendency for pH shift to alkalinity. The degree of biotic soil activity allowed us to refer them to medium and highly active. There is a noticeable correlation (on the Chaddock scale) between this activity and alkaline-acid conditions in Bratsk and Shelekhov respectively (R2 = 0.55-0.63). Soil activity in the settlement zone of Shelekhov is higher than in the control, it was experimentally proved in laboratory conditions. A significant increase in the biochemical activity of soils (particularly urease activity), can lead to the loss of a biogenic element - nitrogen. Microbiological analyzes of the studied soils showed that the amount of ammonifiers decreases markedly in the industrial zone. Bacteria that absorb mineral sources of nitrogen and actinomycetes are less susceptible to the negative effects of plant emissions, both in Shelekhov and Bratsk.