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Showing items 1 through 9 of 3.
  1. Library Resource
    Atlas des Produits des Zones Arides d'Afrique cover image
    Manuals & Guidelines
    Reports & Research
    January, 2009

    Avant-propos La notion de désertification se définit comme une dégradation des sols en zone aride, semi-aride et subhumide sèche, souvent appelée simplement « zone aride ». On estime qu’elle résulte d’une combinaison de facteurs, parmi lesquels les changements climatiques et l’activité humaine. Plus d’un tiers de la superficie totale de la terre est considéré comme zone aride. En termes démographiques, c’est un cinquième de la population totale du globe qui vit en zone aride déjà dégradée ou menacée de désertification.

  2. Library Resource
    African Drylands Commodity Atlas cover image
    Reports & Research
    January, 2009

    Desertification is defined as land degradation in arid, semi-arid and dry sub-humid areas, resulting from various factors, including climatic variations and human activities. More than one third of the surface of the earth consists of drylands. In terms of population, one out of every five people of the world live in already degraded or desertification-prone drylands. These people include many of the world’s poorest, most marginalized, and politically weak citizens. For instance, nearly 325 million people in the African continent live in drylands.

  3. Library Resource
    Journal Articles & Books
    July, 2009

    Water and soils are increasingly becoming a limiting resource for meeting the food requirements
    of a growing world population. Integrated concepts for managing natural resources in a sustainable
    and environmentally sound manner show encouraging impacts, if applied on a large scale and
    over a long period like in Tigray, the northernmost regional state of Ethiopia.

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