ANTHROPOGENOUS PLAINS OF THE EAST ATLAS SURRAUND

V. P. Chichagov

doi:10.15356/0435-4281-2014-1-104-113

ANTHROPOGENOUS PLAINS OF THE EAST ATLAS SURRAUND

V. P. Chichagov

https://doi.org/10.15356/0435-4281-2014-1-104-113

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Abstract

Anthropogenic evolution of semiarid and arid plains of the Eastern Atlas margin in the Holocene and today is described. In the history of Medjerda river valley three stages of man induced aridization were considered: 6.6–6.0, 4.7, and 3.0–2.7 ky b.p.; in the arid shotts region situated further south aridization took place at 13–9, 8.5–7, 6.5–5, and 4 ky b.p.–present time. It means that aridization in the northern regions had begun approximately 6 ky earlier than in the south. Arid transformation of the landscapes due to human impact appeared to be enormous. Medjerda River protracted a large delta into the Mediterranean Sea due to human activity in its valley, the Bon Peninsular and the Dgerba Island gained anthropogenic flat plain relief, landscape of valleys and lakes in the Sahel Tunisia transformed into one of the agricultural plains, sores depressions, and rare lakes.

Keywords

arid relief, coastal plain, the Northern Africa, Atlas swell, anthropogenic transformation, eolian factor

About the Author

V. P. Chichagov

Institute of Geography RAS, Moscow
Russian Federation
Laboratory of geomorphology

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For citations:

Chichagov V.P. ANTHROPOGENOUS PLAINS OF THE EAST ATLAS SURRAUND. Geomorfologiya. 2014;(1):104-113. (In Russ.) https://doi.org/10.15356/0435-4281-2014-1-104-113