Effect of chemical pollution on biological properties of grey forest soils of Adyghea.
Contamination of gray forest soils by Cr, Cu, Ni, Pb, oil leads to a deterioration of its ecological status. By the degree of the inhibitory effect on the biological properties of gray forest soil heavy metals form the following series: Cr> Pb> = Cu> = Ni. The study allowed to propose the regional standards of contents of Cr, Cu, Ni, Pb and oil in the gray forest soils.