[Changes in biological activity of turf-podzolic soil of different mechanical composition contaminated with heavy metals].

It has been shown that soil pollution with heavy metals (copper, nickel) lead to negative changes in parameters characterizing potential biological activity of soil (nitrogen-fixation, breath, invertase activity, bacteria and fungi count). More profound changes were observed in sandy soil compared to loamy soil. A direct relationship of these effects with the content of mobile forms of heavy metals in soil has been established.

[Effect of benzo(a)pyrene on soil microbiocenosis].

The experimental studies have shown that benz(a)pyrene being in the soil affects the formation of soil microbiocenosis and biological activity of soils.