Variation in main morphometric parameters of chernozems under anthropogenic impact

Resumo

Data characterizing the distribution pattern of the main morphometric parameters of chernozems in the Kamennaya Steppe are given. Variable thickness of humus horizon within a flat test plot typical for the central part of the chernozemic zone of Russia is shown. It has been revealed that annually exerted strong anthropogenic impact causes a pronounced drop in the thickness of humus horizon. The investigated objects on the test plot—fallow land, plowed filed, and forest shelter belt—were situated side by side. The statistical parameters of the thickness of humus horizon in different subtypes of chernozems have been calculated. They mainly differ by the depth of continuous impregnation with calcium carbonate (effervescence depth varies from 1 to 95 cm). The deepest effervescence is seen in the soils of the fallow and under the forest belt (68 and 63 cm, respectively).