Moisture regime has paramount importance in the process of pedogenesis, causing ordinary soil moisture content, because the soil air is conditioning the regime. He determines the nature and intensity of alteration processes of mineral matter by the action of water, oxygen and carbon dioxide soluble substances leaching and migration of colloids. Biochemical processes, particularly decomposition of aerobic or anaerobic organic matter is entirely influenced by the character of the soil moisture regime. Water regime in soil and parental rock influence very strong processes and pedogenetical couple with forest vegetation, this arrangement causes the formation of various genetic subtypes of soils.