Galaktionova L.V., Vasilchenko A.V., Anufrienko A.A., Terekhova N.A.
RECOVERY OF THE HUMUS STATE OF THE STEPPE CHERNOZEMS UNDER THE CONDITIONS OF THE DEPOSIT ^{[№ 9 ' 2017]}
In the middle of the last century, in order to provide the country’s population with food products, the country began implementing the plan for extensive development of agricultural production. Only in the Orenburg region from 1954 to 1962, about 2.2 million hectares of virgin and fallow lands were plowed up, and the total area of arable land reached 6.4 million hectares. Along with serious miscalculations in the technology of growing the main crops, excessive plowing of steppe chernozems caused the development of a number of degradation processes, such as dehumification, de-structuring, over consolidation, soil erosion, which was accompanied by a progressive decrease in their fertility. However, at the end of the twentieth century, significant political and economic changes took place in the country, affecting the agricultural production sector. One of his results was the transfer of more than two million hectares into the deposit. Thus, for the first time in the agricultural period, previously arable land was found in an unprecedented natural experiment on the natural restoration of chernozems. This article is devoted to the study of the humus state of steppe chernozems in the conditions of the deposit. The more than 20-year period of soil restoration led to a change in the humus content from 2.79 to 4,1 %, its reserves to 88.9 % of that of the virgin land, an increase in the proportion of humic acids to 39.6 % and a humification depth of 2.33. The studies made it possible to conclude that the system of indicators of humus condition of soils showed high sensitivity to cessation of arable use and can be recommended as a diagnostic indicator for assessing the degree of natural restoration of the soil cover of the steppe.

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.

Verkhoshentseva Y.P., Galaktionova L.V.
PHYTOTOXICITY SOIL PARKS ORENBURG ^{[№ 6 ' 2014]}
This article discusses the current problem to date monitoring and bio-indication of the urban environment. Based on the study of soil phytotoxicity parkland Orenburg and analysis of the results, the authors recommend the use of Avena sativa L. as a test object in the study of the environmental situation in urban ecosystems.

Galaktionova L.V., Stepanova M.A., Teslya A.V., Anufrienko A.V.
COMPARATIVE ANALYSIS OF THE ABILITY OF FLORA URBAN AREAS TO ACCUMULATION OF HEAVY METALS ^{[№ 10 ' 2013]}
The paper studies the ability of trees and shrubs in urban areas to absorb heavy metals. The study was identified Election ability of some species of flora in the city of Orenburg and Buzuluk to the accumulation of copper and zinc.

Eliseeva M.V., Galaktionova L.V., Voropaev S.B., Eliseev S.A., Kusmuchambetova A.G., Kalabkina A.I., Zainagabdinova Z.I.
MORPHOLOGY AND STRUCTURE-PHYSICAL STATE OF SOILS OF BOTANICAL GARDEN OF THE ORENBURG STATE UNIVERSITY ^{[№ 10 ' 2013]}
The article deals with the history of the Botanical garden of the Orenburg state university and analysis of the results of the study of the morphological structural state of soils its territory

Teslya A.V. Galaktionova L.V. Vasilchenko A.S., Yeliseyevа M.V.
ASSESSMENT OF POLLUTION OF TYPICAL AND SOUTHERN PETROLEUM CHERNOZEMS PREDURALIE ^{[№ 6 ' 2013]}
The problem of oil pollution of soils of forest-steppe and steppe landscapes of the Orenburg region. Based on the determination of hydrocarbons in the soil, the contamination levels and the typical southern black soil, and the degree of disturbance. The obtained data allow us to make recommendations to prevent adverse effects on the soil ecosystem.