The soil is closely correlated with the geographic position of the region, through configuration, nature and the structure. Soil quality depends on the formation and protection of surface water sources and groundwater. The soil is closely correlated with the geographic position of the region, through configuration, nature and the structure. Soil quality depends on the formation and protection of surface water sources and groundwater. Economic fertility (anthropogenic) of soils occurs as a result of modifying human activities. In this hypothesis, the links found and the hypothetical ones between components of the object the study can be described using mathematical relations: equations, inequalities, formulas Symbolic mathematics is one of the most convenient ways to describe quantitative and qualitative properties of the surrounding world.

economic fertility, descriptive equations, nonlinear equations

Presentation: oral