Assessment of biological activity in agrogenic and natural chernozems of Kabardino-Balkaria

Parameters of biological activity (humus and microbial biomass reserves, potential intensity of the CO 2 emission, and enzyme activity) have been determined in arable and natural chernozems on the plains of Kabardino-Balkaria as a part of the system for the ecological assessment of the state of the...

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Bibliographic Details
Published in:Eurasian soil science 2017-05, Vol.50 (5), p.589-596
Main Authors: Gorobtsova, O. N., Uligova, T. S., Tembotov, R. Kh, Khakunova, E. M.
Format: Article
Language:English
Subjects:
Agricultural management
Analysis
Arable land
Biological activity
Biological properties
Biomass
Capacity
Carbon dioxide
Carbon dioxide emissions
Decomposing organic matter
Earth and Environmental Science
Earth Sciences
Ecological function
Ecological monitoring
Enzymatic activity
Enzyme activity
Enzymes
Geotechnical Engineering & Applied Earth Sciences
Humus
Integrals
Mathematical analysis
Microorganisms
Parameters
Plains
Properties
Restoration
Soil
Soil Biology
Soil properties
Soils
Statistical analysis
Tillage
Variance analysis
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Summary:Parameters of biological activity (humus and microbial biomass reserves, potential intensity of the CO 2 emission, and enzyme activity) have been determined in arable and natural chernozems on the plains of Kabardino-Balkaria as a part of the system for the ecological assessment of the state of the soil cover. Integral parameters of the eco-biological state of studied soils have been calculated on the basis of obtained data, and the level of changes in their total biological activity has been determined. A statistically significant decrease of the values of all the considered biological properties under the impact of tillage has been found. The data of two-way ANOVA suggest a stronger influence of agricultural management in comparison with genetic features of chernozems at the level of subtype. Differential approach is insufficient for evaluating the total level of soil biological activity, because there are many biological properties of soil, and the degrees of their changes in agrogenic soils are different. An integral approach has been used; it integrates the obtained data into a single integral assessment parameter. In arable soils, this integral parameter decreases by 39–46% and makes it possible to assess the degree of disturbance of the ecological functions of soils and their capacity for self-restoration.
ISSN:1064-2293
1556-195X
DOI:10.1134/S1064229317030048