دراسة الخصائص المورفولوجية للقشرة الملحية في ناحية الهارثة (محافظة البصرة)‎ و أثارها البيئية

الملخص EN

The areas of Shatt al-Arab and low-lying areas considered as one of the most ground units in district Hartha.

the current study is limited to identify some of the factors that played an active role in the formation of the crust salt in bogs areas that reflect the young stage of geomorphological cycle, the excessive irrigation, and repeated floods led torising groundwater level in the alluvial plain, which is the major cause of salt crust in the selected area of this study has been helped by the high temperatures, increased of the evaporation and dominance of drought conditions and softness of dust tissues.

The area under of this study , also, is characterized by high level of groundwater above the critical level which leads to moves toward the top by capillary .

the different climatic conditions made manure study area stages and phases of salinity between crystallization and melting were the most important manifestations of the presence of salt crust, which is characterized by the presence of layer and polygons quintet and six individual and sighs and parallel and retinal cavities and the pyramids hollows, has electrical conductivity values recorded high levels in surface soils, which was the highest of all the values listed in the global food organization scale and at the same time soluble salts values recorded high concentrations to the west in line with electrical conductivity ratios in terms of the increase and decrease.

The salt crust confounded renewed for salt which is then used filtered in refineries and most of salts present in the marsh is pure, so is not suitable for human consumption and industrial uses, but after purification.