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Published in:
2003 | OriginalPaper | Chapter
Accelerated Desertification in the Deserts of Mauritania and China in the 20th Century
Authors : Monique Mainguet, Frédéric Dumay, Dr. Han Guang, Jean-Christophe Georges
Published in: Security and Environment in the Mediterranean
Publisher: Springer Berlin Heidelberg
Included in: Professional Book Archive
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Desertification was defined as the degradation of drylands in the dry, hyperarid, semi-arid and dry subhumid zones (Mainguet, ch. 36; Nasr, ch. 37). In this chapter land degradation is defined as the reduction or the loss of productivity of renewable natural resources in areas cultivated in rainfed or irrigated agriculture on natural steppe, grassland, dry forest, or woodland (Mainguet 1994). This degradation is detectable by climatic, biologic, édaphic, and hydrological indicators.