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Comparative Assessment of Changes in Biological Activity of Mountain Meadow-Steppe and Mountain-Meadow Soils in Pasture Ecosystems of the Central Caucasus
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Comprehensive studies of physical, physicochemical and biological properties of the upper horizons (0-10 cm) of mountain meadow-steppe and mountain meadow soils of the Central Caucasus (Kabardino-Balkaria) at different stages of pasture digression were conducted. In relation to slightly disturbed (D1) genetic analogues, the direction and degree of change in the controlled characteristics of the studied soil types are determined by the stage of pasture digression (D2, D3) and soil formation conditions. It is noted that biological indicators of mountain meadow soils (content and reserves of organic carbon, content and reserves of carbon in microbial biomass, activity of enzymes of the oxidoreductase and hydrolase classes) exceed those of mountain meadow-steppe soils. A significant decrease in soil C (P < 0.05) was established along the gradient of transformation of meadow ecosystems from slightly disturbed (D1) to anthropogenically disturbed to varying degrees (D2, D3). In soils of heavily disturbed meadows, a significant decrease (P < 0.05) in most biological parameters was found compared to slightly disturbed analogues. The obtained data are used to monitor the state of mountain meadow ecosystems in the Central Caucasus.
Title: Comparative Assessment of Changes in Biological Activity of Mountain Meadow-Steppe and Mountain-Meadow Soils in Pasture Ecosystems of the Central Caucasus
Description:
Comprehensive studies of physical, physicochemical and biological properties of the upper horizons (0-10 cm) of mountain meadow-steppe and mountain meadow soils of the Central Caucasus (Kabardino-Balkaria) at different stages of pasture digression were conducted.
In relation to slightly disturbed (D1) genetic analogues, the direction and degree of change in the controlled characteristics of the studied soil types are determined by the stage of pasture digression (D2, D3) and soil formation conditions.
It is noted that biological indicators of mountain meadow soils (content and reserves of organic carbon, content and reserves of carbon in microbial biomass, activity of enzymes of the oxidoreductase and hydrolase classes) exceed those of mountain meadow-steppe soils.
A significant decrease in soil C (P < 0.
05) was established along the gradient of transformation of meadow ecosystems from slightly disturbed (D1) to anthropogenically disturbed to varying degrees (D2, D3).
In soils of heavily disturbed meadows, a significant decrease (P < 0.
05) in most biological parameters was found compared to slightly disturbed analogues.
The obtained data are used to monitor the state of mountain meadow ecosystems in the Central Caucasus.
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