degradation

PERCULARITIES OF HYDROCARBON DEGRADATION BY BACTERIA ISOLATED FROM DRILL SLUDGE

Authors: Pleshakova Y. V., Belyakov A. Y., Deev D. V.

Some microorganisms isolated from drill sludge (Bacillus circulans NSh, B. firmus OBR 1.1, B. firmus OBR 3.1, Solibacillus silvestris OBR 3.2, B. circulans OBR 3.3, Halomonas sp. OBR 1, and Erwinia rhapontici OBR 4.1) have been shown to be capable of degrading crude oil, mineral oil, and diesel fuel. It has been established that the B. circulans NSh and B. firmus OBR 1.1 bacteria degrade 62 and 32% of crude oil, respectively, in an alkaline medium (pH 9) for 14 days and degrade 42 and 22%, respectively, in a saline medium (10% NaCl).

ANALYSIS OF THE AFFORESTATION STATUS IN THE ARID CONDITIONS OF WESTERN KAZAKHSTAN

Authors: Akhmedenov K. M.

The current status of the forest fund is considered, the agroforestry melioration potential of the Western Kazakhstan region is assessed. The modern silviculture stage on the area studied is described. The biodiversity depletion is noted, the possibilities of conservation of the existing natural and artificial protective plantings in the extreme conditions of the Western Kazakhstan region are assessed. Floodplain forests, chopping sand massifs and estuary-type depressions, gully and ravine forests are considered as key botanical and landscape territories of the surveyed area.