Some specific features of the biochemical properties of soils

Soil can be perceived as a matric system with certain compartments. The mineral, organic, and organomineral matrices can be distinguished in it. The synthesis of humus in the soil is a continuous process with an abiotic final stage. The synthesis of polymers takes place on mineral and organomineral matrices. The development of humus horizon considerably reduces the migration of organic substances in the soil. Three different types of element associations can be distinguished in the soil: the geochemical association inherited from the parent material, the biochemical association inherited from the remains of living organisms entering the soil, and the biogeochemical (or proper pedogenic) association appearing in the course of interaction between the first two element associations under the given type of the soil water regime. The inhibitors and, probably, stimulators of plant growth also exist in the soil.