title: [The effect of tillage and mesoreief on the structure of soil microbial biomass].
abstract: The investigation of soil microbial cenoses in cultivated catenas and in virgin soils at the foot of catenas showed that the structure of these microbiocenoses depends on the type of the vegetation cover, the characteristics of mesorelief, and the degree of soil tillage. The microbiocenoses were found to be dominated by the fungal mycelium. The proportion of bacteria and fungal spores was higher and the seasonal variations in the soil microbial communities were more distinct in the cultivated than in the virgin swamp and forest soils. The type of mesorelief was found to appreciably influence microbial populations in the top humus-rich horizons of the cultivated soils and not in the mineral soil horizons.
authors.affiliation: Department of Soil Biology, Faculty of Soil Science, Moscow State University, Vorob'evy gory, Moscow, 119899 Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Sveshnikova
authors.forename: L M
authors.initials: LM
authors.lastname: Polianskaia
authors.forename: S M
authors.initials: SM
authors.lastname: Lukin
mesh_terms: D001419:Bacteria; D012426:Russia; D012987:Soil; D012988:Soil Microbiology
chemical_list: D012987:Soil