Bioremediation of soil cover contaminated with oil products
- 1 — R&D Institute of Geography at St. Petersburg State University
- 2 — R&D Institute of Geography at St. Petersburg State University
- 3 — R&D Institute of Geography at St. Petersburg State University
Abstract
Studies of meadow phytocenoses have established a threshold concentration of oil products in sod-podzolic soils (3 p/m 2 ), the excess of which leads to disruption of plant life. In areas with such degree of soil contamination vegetation cover is formed in the second year after technogenic disturbance of the territory. The presence of oil products in the soil in the concentration of 4-5 p/m 2 causes the death of up to 95-100 % of natural flora. Analysis of research results allows us to distinguish three degrees of soil contamination with oil products based on the reaction of meadow plants: weak (1-2 l/m 2 ), medium (3 l/m 2 ) and strong (more than 4 l/m 2 ). For bioremediation of contaminated soils, it is advisable to cultivate meadow and creeping clover, hedgehog, meadow fescue, meadow timothy. Organic compost based on peat proved to be the best biostimulant for activation of soil microflora - oil-hydrocarbons destructors - under conditions of optimal soil humidity.