Some physical-chemical indicators gray-brown (chestnut) soils of semi-moisture subtropics of Lenkoran district

This article provides information on some of the physical and chemical properties of gray-brown soils in the semi-humid subtropics of the Lenkoran district. Particular attention is paid to the ecological factors of the formation of these soils. These soils are distributed within the plains, foothills and low mountains and are formed on carbonate rocks, where the soil-forming rocks are limestone eluvium, calcareous sandstones, mountain carbonate shales. The process of soil formation proceeds during a significant period of the year under conditions of insufficient atmospheric moisture with a leaching water regime that meets the ecological and geographical conditions of semi-humid and dry subtropical steppes. In zonal terms, the following main soil types are distinguished: gray brown (chestnut), gray brown meadow, as well as their subtypes - dark gray brown, ordinary gray-brown, light gray brown and others. To compare the obtained data for some physical and chemical indicators, a theoretical analysis was carried out between literary and experimental indicators. The results of analyses of soil samples for natural biotopes served as starting data.