Research of the systems of environmental and soil protection technologies in erosion-hazardous agrolandscapes

Land degradation is primarily caused by direct destruction of the natural ecosystems, irrational use and depletion of the land resources, and the growing agrotechnogenic load on soils.Contemporary scientific research has been carried out by means of field route studies and land inventory to determine the geomorphological and soil characteristics of the studied polygons, taking into account the basic principles of application in the geospatial analysis and practical use in the landscape studies by means of the Auto CAD computer program, the boundaries of the polygons -watersheds on raster topographic maps being determined, digitized in the local coordinate system (SK-63).It has been established that the introduction of a set of measures for the conservation of the degraded lands of the sloped agrolandscape systems by stopping intensive economic activity with subsequent use of the land plots as hayfields and pastures, ensured a significant reduction in soil loss due to erosion, while the soil loss on heavily and moderately eroded soils of the studied sites amounted to 2.38-4.19tha -1 , which differs slightly from the maximum permissible standard indicators of soil loss for the heavily and moderately eroded soils.The main characteristics of the agrochemical, agrophysical and other properties of the washed-out chernozems have stabilized during the conservation period.At the same time, the humus content in the cultivated soil layer has increased to 3.85%, the optimal values are characterized by the soil acidity pH 7.1-7.3(close to neutral).Attention has been focused on the specifics of the land conservation by excluding it from economic circulation with its subsequent use as pasture and hay lands.