desertification and water degradation
Post on 20-Jun-2015
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Desertification
What causes it?
12 million hectares of land annually become desert
EFFECTS ON AGRICULTURE
• China + Africa most affected
• 20 million tons of potential grain lost annually
• Price of food rises
WATER DEGRADATION
IMPACT ON AGRICULTURE
• 10% of world’s irrigated lands have become salinated
• Water sources dry up from over use.
• Supply of food goes down
• Global food prices rise
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