Soil microbiota as a factor of soil contamination resistance

• Main Author: G. A. Evdokimova
• Format: Dataset
• Language: Russian
• Published: Theoretical and Applied Ecology 2014
• Subjects: microorganisms; soil biogenic capacity; destructive processes; bio-immobilization; biogenic migration; Kola Peninsula; kola peninsula
• Online Access: https://dx.doi.org/10.25750/1995-4301-2014-2-017-024; http://envjournal.ru/ari/v2014/v2/files/14202.pdf

On the basis of stocks of microbial biomass, organic matter and nitrogen in the soil a criterion of soil biogenic ca¬pacity was developed. It characterizes potential soil fertility, its self-purification capacity and contamination resistance. The most parts of the podzolic soil of Kola Peninsula are characterized by low and medium biogenic activity, with the stock of humus 55 ± 5.1 and 95.7 ± 15.9 t / ha, nitrogen 1.07 ± 0.20 and 1.23 ± 0.19 t / ha, microbial biomass 0.44 ± 0.13 and. 1.40 ± 0.32 t / ha respectively. The processes of decomposition of plant residues are determining the content of humus in soil. These processes are much more influenced by the comosition of plant residues than by soil contamination with haevy metals and fluoride. A conceptual basis of an environmental–microbiological approach to protection of soil chemical contamination is analyzed. It is based оn the destructive activity of soil biota when pollutants are decomposed to simple mineral compounds, and on the environment-regulating functions of microorganisms during accumulation and immobilization of toxic elements and their ability to biogenic migration. The paper presents the specific materials in all of these positions by the example of biodegradation of petroleum hydrocarbons, accumulation and migration of Cu and Ni by fungal mycelium.