المستخلص: |
Department of Geography " Study area is located in south-western part of Basra province and occupies the south-eastern part of the plateau of western Iraq, and constitute latitudes (29.9o - 30.43o) and north along the litigant (46.30o - 47.55o) eastward Borders and occupies an area of astronomical amount (10060 km2) of the area of Basra Governorate amounting (19070 km2). Has contributed a series of natural and human factors directly or indirectly to the emergence of the phenomena of erosion and salinity in this region be preserved, since they occur within the dry climate which is characterized by high summer temperatures start of the month (April until October), which is Annual rate (24.8 m). Which led to higher values of evaporation, which total annual (3085 mm), as well as the lack of fluctuation of rainfall totalling annual (128.71 mm) accompanied by an increase in the proportion of North-West wind repeat the same months mentioned that the annual rate of recurrence (35.1), as well That higher temperatures mean oxidation of organic matter and therefore lower values on the soil surface. So weather combined elements contributed to the emergence of phenomena under study. Diastole has contributed to the relative nature of the surface of the slope of contour lines (244 m) west and (6 m) east winds to increase susceptibility to transport dry disintegrated minutes from the roof top of the soil and spread sand dunes, especially during the heat of the year.
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