Biodiversity, land degradation and poverty alleviation in dry and sub-humid lands
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Adel El-Beltagy, Jan Valkoun, Ahmed Amri, Richard Thomas, Kamel Shideed. (31/12/2005). Biodiversity, land degradation and poverty alleviation in dry and sub-humid lands. Beirut, Lebanon.
Drylands occupy 41% of the earth's land area and are home to more than 2 billion people. Some 50% of the world's poor live in the drylands. Water scarcity limits the production of crops, forage, wood, and other ecosystem services.