Abstract
Purpose: to study the impact of slope steepness and length on the intensity of erosion processes and, on this basis, to identify working areas (fields) that are homo-geneous in terms of fertility, degree of their erosion, surface (relief) morphology, including steepness, exposure, slope shape and other indicators. Methods. The field test layout on ordinary chernozems within the Azov inclined plain of Rostov region. The studies were carried out from 1973 to 2021 on slopes with main crops, bare fallow, fall-plowing by the method of measuring ravines. Results. It was found that each specific degree of erosion occupies a certain position in the modern agricultural landscape, located in the form of belts of various widths on slopes of a certain steepness. Thus, weakly eroded soils occupy slopes from 0.4 to 2.5–3.0°, and the soil loss value is 5–19 t/ha. The moderately eroded soils are formed on slopes with a steepness of 3 to 4.5–5°, and soil loss can be 20–35 t/ha. Highly eroded soils are formed with a slope steepness of more than 5° and soil loss from 40 to 60 t/ha. Analogous plots that are similar in intensity of manifestations of erosion processes and soil cover are combined into agrolandscape strips, which in the future are fields or working areas with approximately the same set of soil protection technologies, techniques, measures, crops that provide control over erosion processes. Conclusions. A successful soil erosion control is possible only on the basis of an adaptive landscape organization of the territory, which makes it possible to increase technologies, techniques and measures systematically and consistently depending on the intensity of soil erosion on slopes of various steepness and distance from the watershed line, designated as agro-landscape stripes.
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