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Analyse des inter-relations anthropiques et naturelles : leur impact sur la recrudescence des phénomènes d'ensablement et de désertification au sud-est du Maroc (vallée de Drâa et vallée de Ziz)

Abstract : This paper presents an analysis of natural and anthopogenic factors responsible for increasing sanding up and desertifciation phenomena in southeastern Morocco. The results revealed that the environment has changed in this region over the last few decades via the influence and interaction of different natural and anthropogenic factors. In this very fragile environment, human pressure, altering climatic conditions and the use of inappropriate technology have prompted a long and insidious process leading to the appearance of desert biotopes, even in previous non-desert areas. Increasing populations and socioeconomic changes are responsible for overuse of this environment. A new relationship between human and the environment has developped through the introduction of modern lifestyle in oasis areas, accompanied by increased road systems, irrigation canals, motorization, dams, etc. With this modernization, traditional techniques are becoming obsolete and out of line with development policies. This has led to a generally unbalanced situation. The main environmental changes that have occured such as sanding up and desertification, are therefore more due to human pressure and accompanying technological modifications, along with resource mismanagement, than to unfavorable climatic conditions. Human activities are therefore chiefly responsible for the environmental imbalance that has occured in southeastern Morocco in recent decades.
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https://hal-amu.archives-ouvertes.fr/hal-01569299
Contributor : Jean-Louis Ballais <>
Submitted on : Wednesday, July 26, 2017 - 2:56:44 PM
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Aïcha Benmohammadi, Lahcen Benmohammadi, Jean-Louis Ballais, Jean Riser. Analyse des inter-relations anthropiques et naturelles : leur impact sur la recrudescence des phénomènes d'ensablement et de désertification au sud-est du Maroc (vallée de Drâa et vallée de Ziz). Sécheresse, 2000, 11 ((4)), pp.297-308. ⟨hal-01569299⟩

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