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Hydro-ecological Impacts of Rainwater Harvesting Techniques on Arid Range lands: A Case Study of Gezira State, Sudan.

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dc.contributor.author Mohamed, Hussein Ishag Osman
dc.date.accessioned 2018-09-16T11:09:21Z
dc.date.available 2018-09-16T11:09:21Z
dc.date.issued 2015-06-22
dc.identifier.uri http://repo.uofg.edu.sd/handle/123456789/1683
dc.description A Dissertation Submitted to the University of Gezira in Partial Fulfillment of thequirements for the Award of the Degree ofMaster of Science, in Water Management,Water Management and Irrigation Institute, June / 2015 en_US
dc.description.abstract Range land are very important natural resources in the Gezira state. However, it has recently showed a declining trend. The objectives of this study were to: Evaluating the impacts of ridges as rainwater harvesting technique on range lands productivity, and evaluating the impacts of ridges on controlling soil erosion problems. Two experimental catchment (with and without ridges) were designed (80 m2 each) so as to estimate the generated amount of runoff and eroded soil using dug holes (1 m x 1 m x 0.3 m depth) plastic pots were prepared and placed inside the holes for collecting runoff. Sediments amount were analyzed at the laboratory of Hydraulic Research Station, Wad Medani. Daily rainfall amount was collected from two adjacent rain gauges (Abuoshre and Elgorashi) for the season 2013. Field routinely plant indices were collected, too. Ridges reduced insignificantly the collected amount of runoff compared to control, i.e runoff coefficient of 0.003%. The results confirmed the positive impacts of ridges on reducing the water erosion hazard amount of runoff by Ridges resulted directly in reducing the soil erosion hazards which were estimated at 1.5 kg/ha/year for fields with water harvesting techniques and 1.6 kg/ha/year for field without water harvesting techniques. Also, the adoption of ridges improved the range lands productivity through e.g increasing the total number of plants by 62% compared to the non- Ridges fields. It is therefore adoption of ridges on arid rangelands of Gezira is proved to be a sustainable practice (secure solution). Thus increasing rate of adoption of ridges is strongly recommended. This could be done through increasing the capacity building program for ms livestock owners on water and land issues and through enhancing and encouraging participation of the adjacent community in sustainable management of pastures. en_US
dc.description.sponsorship Shamseddin M. Ahmed Main supervisor Ali Adeeb Mohamed Co-supervisor en_US
dc.language.iso en en_US
dc.publisher University of Gezira en_US
dc.subject natural resources en_US
dc.subject soil erosion en_US
dc.subject ridges en_US
dc.subject Rainfall en_US
dc.subject Ecological impacts en_US
dc.subject Erosion en_US
dc.subject Agriculture en_US
dc.title Hydro-ecological Impacts of Rainwater Harvesting Techniques on Arid Range lands: A Case Study of Gezira State, Sudan. en_US
dc.type Thesis en_US

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