Abstract
The functional state of soils in the Moscow Zoo was assessed on the basis of the indices of intensity of the main biological processes. Studies of the carbon and nitrogen cycles in the soils, the soil enzyme activity, the microbial biomass, and the functional diversity of soil microorganisms (using the method of multisubstrate testing) were performed in aviaries, open-air animal enclosures, and on public parts of the Moscow Zoo. Against the background of relatively favorable physical properties of the soils (soil density and soil air, water, and temperature regimes), their biological activity was very low. The highest values of the biological activity were found in the soils of enclosures with the white-tailed gnu (Connochaetes gnou) and the cassowary (Casuarius casuarius). No significant differences in the biological activity of the soils within the aviaries and animal enclosures and on the public territories were found.
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