Elizareva E.N., Yanbaev Y.A., Redkina N.N., Kudashkina N.V., Baykov A.G.
ASSESSMENT OF SOIL POLLUTION IN THE ZONE OF INFLUENCE OF METALLURGICAL ENTERPRISES ^{[№ 9 ' 2017]}
The total contents of heavy metals in soils selected in the zone of influence of Karabashmed CJSC, Satkinsky Iron-smelting Plant JSC and Uchalinsky Ore Mining and Processing Plant OJSC were analyzed. The excess of the standards for all metals except manganese has been established. The phytoremediation method — accumulation of heavy metals from soil by plants was tested on the investigated soils. It is shown that after growing plants in the soils, the content of iron, zinc and copper decreased. Assessment of soil contamination degree using the concentration coefficient showed that in the studied soils before planting the total amount of most metals is within the limits of natural fluctuation. A weak level of soil contamination with cadmium has been established (Uchaly), moderate contamination with copper (Uchaly) and zinc (Karabash), heavy pollution with cadmium and copper (Karabash). As a result of the use of phytoremediation technology, the concentration coefficients for iron, zinc and copper have significantly decreased. And according to the content of copper, Uchalv’s soil passed from the category of moderate pollution to the category of low pollution. To estimate the multielement influence the levels of heavy metal contamination were calculated using the Saet’s index and the index proposed by Yu.N. Vodyanitsky, taking into account the different toxicity of heavy elements and based on the average geometric parameters. It is shown that the use of phytoremediation technology decreases the level of total contamination of soils with heavy metals.

Tagirov B.B., Yanbaev Yu.A., Tagirova A.A., Redkina H.H.
INDIVIDUAL VARIABILITY OF HEIGHT INCREMENT OF SCOTS PINE`S UNDERGROWTH IN ABANDONED AGRICULTURAL LAND <sup>[№ 10 ' 2015]</sup>
The article contains results of analyses of individual variability of annual height increment of Scots pine (Pinus sylvestris L., Pinaceae). Region of research is presented by forest-steppe of Bashkir Trans-Urals, where in recent decades a large-scale of natural reforestation of Scots pine in out-of-use agricultural land — abandoned arable, hayfields and pastures is occurred. 30 areas of Scots pine`s self-seeding were selected on the territory of Uchaly region of Republic of Bashkortostan on a provisional transect `north-south` length of nearly 100 km. The amount of the annual increment in height in the years 2009–2013 was measured at 4 000 copies of undergrowth (30 plants / year for each test area). The study proved that the variability of a feature within separate reforestation areas is mainly determined by genetic characteristics of undergrowth rather than by environmental conditions.

Redkina N.N., Kinyabulatov S.S., Yanbaev Yu.A., Mullagulav R.Yu.
ABOUT NECESSITY OF POPULATIONAL APPROACH AT INTRODUCTION OF GROWING WILD PLANTS INTO CULTURE ^{[№ 6 ' 2009]}

Yanbaev Yu.A., Redkina N.N., Yusupova A.A., Mullagulov R.Yu.
GENETIC VARIETY OF CERASUS FRUTICOSA PALL. (ROSACEAE) ON SOUTH URAL ^{[№ 6 ' 2009]}

Mullagulov R.Yu., Redkina N.N., Yanbaev Yu.A.
ALLOZIME VARIABILITY OF PETIOLATE OAK QUERCUS ROBUR L. (FAGACEAE) IN ISOLATED POPULATIONS ON THE EAST BORDER OF AREA ^{[№ 2 ' 2008]}
Genetic structure of two isolated populations of petiolate oak, located on the last East border of area in extreme ecological conditions for division is researched with using of isoenzyme markers of 17 locuses on the territory of Bashkiria trans-Ural. Uniqueness of their genofond and relative weak intersample subdivision are revealed in this article.