CHANGES IN THE GRANULOMETRIC COMPOSITION OF EROSIONED MOUNTAIN GRAY-BROWN SOILS IN THE GOBUSTAN REGION DEPENDING ON THE DEGREE OF EROSION

Abstract

The soils of the study area are mainly mountain gray-brown type soils, and the resistance of these soils to erosion is quite weak. Therefore, it is important to take preliminary measures to increase the resis- tance of these soils to erosion. The morphological structure and morphometric indicators of mountain gray-brown soils formed in complex relief conditions are diverse. Basically, these indicators vary depen- ding on the slope and other geomorphological parameters. These characteristics of the soils were obser- ved in all areas of the study area. These characteristics vary depending on the degree of soil erosion. Our studies have considered these issues. The granulometric composition of ordinary mountain gray-brown (chestnut) soils is heavy, mainly clayey and heavy clayey types prevail. The amount of silt particles in the upper layer is 27±3.2%, and the amount of physical clay is 60±4.5%. In some regions, the amount of physical clay increases to 72%. The amount of silt particles is higher in the middle part of the profile, which cau- ses the appearance of signs of clay formation in this horizon. The mineralogical composition of the soils has similar characteristics to other subtypes.