Galaktionova L.V., Vasilchenko A.V., Suzdaleva A.V.
BIODIAGNOSTICS SOILS OF ОRENBURG PARKLAND ^{[№ 6 ' 2015]}
The article deals with the prospect of the use of indicators of biological activity of the soil for an adequate assessment of the environmental state of the soil cover of parkland in Orenburg. The current approaches to the diagnosis of soil biological indicators include the definition of the actual and potential biological activity. Potential biological activity indicates the ability of the soil to the implementation of a process under optimal conditions for soil body. It reflects the latent ability to induce a number of biological processes and thus to maintain the constancy of soil parameters. Indicators relevant biological activity reflects the intensity of these processes in real environmental conditions. For a comprehensive assessment of soil processes of tension indicators have been used to date (the production of carbon dioxide and cellulolytic capacity of the soil) and potential (catalase activity and phytotoxicity / seed germination test culture) biological activity in combination with integral indicator of a biological state (IPBS) proposed Kolestnikov C.I., Kazeev K.S., Valkov V.F. (2003). To assess the impact of the urban environment in the soil-biotic complex was carried out determination of the content of mobile forms of heavy metals in soils research facilities. Results of the study revealed the dependence of the volume of carbon dioxide produced by cellulolytic capacity of soils and their hydrothermal regime. Last corrected by human activities in the implementation of measures for the care of green areas. The study of indicators of potential biological activity revealed a statistically significant link them with the content of heavy metals (such as individual items and total content) in soils. The indicator IPBS allowed the authors to make comprehensive conclusions about its dependence on the impact of anthropogenic factors. Reducing the integral index of the biological condition of soil degradation indicates the park area of Orenburg city and oppression intensity exercise of important ecological functions.