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The respiration activity of roots was studied in field experiments on gray forest and soddy-podzolic soils and under cropland and natural vegetation.
      
The contents of magnetic spherules and 137Cs and 210Pb isotopes were determined in gray forest soils of the Novosil Agroforest Experimental Station in Orel oblast (central part of European Russia).
      
The terraces of Lake Baikal and the Selenga River are occupied by soddy forest and gray forest soils.
      
Microbiological processes in gray forest soil treated with sewage sludge compost
      
The influence of lead on the respiration and biomass of microorganisms in gray forest soil in a long-term field experiment
      
It was found that PCBs affect the aggregation of micro-and macroparticles in samples from the A horizon of gray forest soil and loam and the reflective properties of sand.
      
The water-retaining capacity of loam and gray forest soil from the A horizon decreases in the presence of PCBs.
      
Transformation of old-plowed gray forest soils under the influence of differently aged pine forests in the middle Angara River r
      
The long-term (55-85 years) influence of pine forests on old-plowed gray forest soils (in the middle Angara River basin) has been reflected in the character of the biological cycle and intensity of the biological processes.
      
Microbial activity in the profiles of gray forest soil and chernozems
      
Soil samples were taken from the profiles of a gray forest soil (under a forest) and southern chernozems of different textures under meadow vegetation.
      
About 57% of the total MB in the entire soil profile was concentrated in the layer of 0-24 cm of the gray forest soil.
      
The correlation was found between the MB and the C org (r = 0.99) and between the MB and the clay content (r = 0.89) in the profile of the gray forest soil.
      
The C mic/C org ratio in the gray forest soil and in the chernozems comprised 2.3-6.6 and 1.2-9.6%, respectively.
      
Effect of oil and oil products on lipase activity in gray forest soil
      
The effect of different rates of oil and oil products on the lipase activity in gray forest soil was studied under field and laboratory conditions.
      
The presence of these compounds colors the soil mass into the dark gray color resembling the color of the proper humus horizon.
      
A quantitative assessment of the carbon balance was performed in gray forest soils of the former agricultural lands abandoned in different time periods in the southern part of Moscow oblast.
      
The dynamics of the strength of the soil structure in the course of drying of soil pastes and aggregates have been studied in a loamy gray forest soil using the cone-plastometer method suggested by Rebinder.
      
In three laboratory experiments with gray forest soils, the rates of mineralization of the bacterial mass, green oat mass, and cellulose applied in increasing doses were determined based on the measurement of the C-CO2 emission.
      
 

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