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Desertification (Causes and consequences (Over-cultivation- More people…
Desertification
Causes and consequences
Over-cultivation- More people need more food and farming exhausts the soil, turning it to dust
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Soil erosion- Where vegetation is destroyed, exposing soil which cracks and breaks up making it vulnerable to erosion by wind and rain
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Fuelwood- Population growth increases demand, trees that are stripped of branches eventually die
Stopping desertification
Water and soil management - irrigation needs to be managed carefully if salinisation is to be avoided
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Contour traps- embankments built along slopes prevent soil from being washed away during heavy rainfall
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Tree planting- reduces soil erosion because the roots bind the soil together and the leaves and branches provide shade
Appropriate technology
Practical and sustainable approaches to farming addresses the needs of poor people who are unable to afford expensive machinery
'Magic Stones' in Burkina Faso, Africa have reduced desertification and increased crop yields by 50%
Where land gradually turns into a desert, mostly on the borders of already existing deserts
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