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Abstract
The article is devoted to the current problem of spatial changes in the biological activity of soils within the territories that are subject to various degrees of anthropogenic load. Changes in the structure and functions of separate components of soil causes restructuring in operation of the urban ecosystem in general and requires constant monitoring. To study the self-restoring capacity of urban soils, biological activity of soils in different areas of Academgorodok District of Irkutsk was evaluated. Methods of determination of biological activity of soils with the help of indicators of cellulosolytic, protease and urease activity were used. It was shown that, under anthropogenic impact, soils of different areas develop adaptive mechanisms, the activity of which is aimed at enhancing resistance to human negative impact on the environment (oil pollution, reduction of vegetation). The data obtained as a result of the research characterize the ability of the studied soils to self-repair and can be used to develop methods for soil restoration within an urban area.
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