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Showing items 1 through 6 of 6.
In the not so long history of humankind, our ancestors too often fought for land and water. Those days have returned.
Esto es un Compedio Para Responsables de Politicas "Revertir la degradación de la tierra"
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.
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.
Il semble, d' après des estimations préliminaires, que la production agricole du continent africain qui avait augmente d’environ 7 pour 100 en 1962/63 (mais il s’agissait en grande partie d'un redressement, car elle avait baisse l'année précédente), se soit accrue de noms de un pour 100 en 1963/6
Africa is a considerable net exporter of agricultural products and in 1963 the volume of its gross imports amounted only .to about a quarter of its gross exports. Since 1957 the continent's net exports have been subjected to a constant and fairly rapid increase.