Khasanova R.F., Semenova I.N., Suyundukov Ya.T., Rafikova Yu.S., Biktimerova G.Y., Ilbulova G.R., Kuzhina G.Sh., Ilyina I.V.
ECOLOGICAL ESTIMATION OF POLLUTION BY HEAVY METALS OF SOILS OF INDUSTRIAL ZONES OF SIBAY CITY ^{[№ 12 ' 2017]}
The state of soils affects the environment and natural resources, the level of economic and social development and public health. In this paper, the content of heavy metals in the soils of the center of the mining industry of the Trans-Ural region of the Republic of Bashkortostan, Sibai, has been studied. Sibai soils contamination with heavy metals is associated with anthropogenic activity and differs in various degrees of concentration. In the soils, high concentrations of gross and mobile forms of Cu, Zn, Ni, Mn, Cd were detected. A number of accumulations of metals have been formed over the gross content: Zn < Cu < Co < Cd < Pb < Mn < Ni < Fe, from mobile forms: Cu < Zn < Mn < Cd < Ni < Co < Pb < Fe. According to the total pollution index, the ecological status of the studied urban soils is estimated as “moderately dangerous” and “permissible”.

Semenova I.N., Ilbulova G.R.
USE OF SOIL MICROBIOLOGICAL INDICATORS COMPLEX IN ENVIRONMENTAL MONITORING OF TECHNOGENIC CONTAMINATED AREAS ^{[№ 12 ' 2011]}
It is established that the soil of areas with developed mining industry significantly different from non-contaminated soil with heavy metals on the following parameters: the number of ammonifying, aminoautotrophic, humuscorrupting and oligotrophic microorganisms, as well as at a rate of succession and the total number of microorganisms.

Semenova I.N., Ilbulova G.R., Zulkarnaev A.B., Suyundukov Ya.T.
EFFECTS OF ZEOLITES ON ENZYMATIC ACTIVITY IN ORDINARY CHERNOZEM IN CASE OF LEAD CONTAMINATION ^{[№ 12 ' 2011]}
In study of enzymatic activity of soil, polluted with Pb, it was found that when the lead content was up to 10 MACs (maximum allowable concentrations), urease activity in nonfertilized soil was reduced to 50%, proteolytic activity — to 25%, and cellulolytic аctivity — to 36% from activity in uncontaminated soil. In the presence of zeolites and organic fertilizers, this effect was less pronounced.

Ilbulova G.R., Semenova I.N.
APPRAISAL OF PARAMETERS OF FUNCTIONAL BIOLOGICAL VARIETY OF SOIL MICROBAL FORMATIONS OF THE TERRITORY AMENABLE TO THE INFLUENCE OF ORE MINING AND PROCESSING ENTERPRISES ^{[№ 6 ' 2009]}