THE CHANGE CHEMICAL COMPOSITION OF CHERNOZEM LEACHING UNDER PIROGENIC INFLUENCE
The basic consequence of influences of forest fires on a soils it is losses of organic substance, decrease in the maintenance connections of nitrogen and increase in the maintenance of cindery elements (P <sub>2</sub>O <sub>5</sub>, K <sub>2</sub>O). In chernozem leaching of pyrogenic influence the increase in the content of mobile connections Cu and Zn in the top horizon that is connected with intake of ashes on a surface of the soil which is enriched with microcells is observed.