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SLM options in Medenine: current patterns, issues on technological, economic and ecological efficiencies, adoptions and recommendations for effective out-scaling Final Workshop “Sustainable Land Management to Achieve Land Degradation Neutrality: Options-by-Context Approach and Tools” 24 October Tunis, Tunisia Mohamed Ouessar (IRA, Médenine) Farouk Boufalgha (INAT, Tunis)
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Governorate of Médenine
The governorate of Médenine is located in the south east of the country and covers an area of 8588 km2 The population : around inhabitants
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De 200 à 250mm/an De 100 à 200 mm/an < 100mm/an
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Land use Area of agricultural lands : 835 000 Ha 188 250 ha olives
Area of arable lands : Ha * Fruit trees : Ha ha Others Irrigated 2 360ha Rangelands ha CRDA-Médenine
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Methodology SLM Literature Farmers Researchers Practitioners
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Irrigation water management
Water Harvesting Irrigation water management Wind erosion control
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Water harvesting Jessour Tabias Recharge check dams Flood spreading
Cisterns Recharge wells Contour ridges
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Jessour Tabias
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Cistern Contour ridges
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Recharge check dam Recharge well
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Flood spreading
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Technique Technological issues Recommendations Jessour Damages caused during floods Proper design Tabias Cisterns Water lifting Mechanical / gravity Contour ridges Recharge check dams Silting of storage areas Upstream treatment Flood spreading Recharge wells Site selection Silting of filters Fine hydrogeological prospection / MCA Regular maintenance
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Technique Economic issues Recommendations Jessour High cost of establishment Labor scarcity Long term return Organization of farmers Ecosystem services Tabias Cisterns Contour ridges Cost of establishment Recharge check dams Flood spreading Recharge wells
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Technique Ecological issues Recommendations Jessour Drought recurrence Supp. Irrigation Tabias Cisterns Contour ridges Recharge check dams Flood spreading Recharge wells Risks of groundwater contamination Proper site selection Site protection
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Technique Scaling out Jessour Other regions / countries Tabias Cisterns Contour ridges Recharge check dams Flood spreading Recharge wells
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Wind erosion control Fencing Check-board Afforestation Resting
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Fences Check-board
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Afforestation Resting
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Technique Technological issues Recommendations Fences Spacing/density Experimentation Check-boards Afforestation Species selection Resting Optimal period Experimentation/Monitoring
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Technique Economic issues Recommendations Fences Establishment costs Long term return Ecosystem services Check-boards Afforestation Resting Herder organization
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Technique Ecological issues Recommendations Fences Longer and frequent droughts Supp irrigation Check-boards Afforestation Resting Gov. subsidies
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Technique Scaling out Fences Other regions /countries Check-boards Afforestation Resting
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Subsurface irrigation
Irrigation water management Deficit irrigation Subsurface irrigation
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Deficit irrigation Sub-surface irrigation
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Technique Technological issues Recommendations Deficit irrigation Timing of irrigation Provide guidelines /sheets Sub-surface irrigation
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Technique Economic issues Recommendations Deficit irrigation Sub-surface irrigation Establishment cost Long term return Gov. subsidies
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Technique Ecological issues Recommendations Deficit irrigation Soil salinization Leaching Sub-surface irrigation
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Technique Scaling out Deficit irrigation Other regions / countries Sub-surface irrigation
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Thank You!
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