Monitoring sand accumulation in five villages west of Omdurman, Sudan by GIS

This study aimed at assessing the impact of desertification on the environmental situation in west Omdurman area. The study used GIS techniques to analyze the digital data obtained from satellite image to monitor desertification and thickness of sand accumulated in five villages west of Omdurman, Sudan. These villages are; Um Harout, Gabert Saeed, Wad Omer, Wad Abdo and El Zeriat. The study also used data and information obtained from relevant official sources. The analysis of digital data from the satellite image indicated that El Zereiat and Gabrat Saeed villages were covered by very thick sand (>50 cm) on rocky surfaces (mostly dunes). Wad Abdo area was covered by thick (25-50 cm) sand. Most of Um Harout and Wad Omer areas were covered by thin vegetation and thin sand sheet. The study recommended establishment of shelterbelts and windbreaks to reduce the effect of sand movement; use of water harvesting techniques for supplementary irrigation; and enforcement of the environmental laws and legislations for better management and protection of natural resources.