Pilipko O. Influence of Alces alces (L.) excreta on chemical properties of forest soils in Steppe Dnieper region.

The object is an excreta decomposed on surfaces of forest soils . The aim is to study the dynamics of a humus and complex NPK formation structure under impact of excreta decomposed on surfaces of forest soils and under heavy metals pressure. The methods are the widely accepted ecological physico-chemical methods, statistical methods, methods of experiment planning. Influence of organic matter of Alces alces (L.) excreta on chemical properties of different by grain-size composition wood soils under conditions of artificial heavy metals pollution is estimated. The role of excrements in dynamics of chemical parameters is determined. Neutralization of negative influence of metals-pollutants on the biotest of decomposition of excreta fall is found. Regression models concerning dynamics of soil chemical parameters are made. Interaction of organic matter with metals, that causes ecological stability of soils under conditions of technogenic pressing, is established. The spheres of use are the improvement of ahumic condition of soils and training courses.