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Evaluation of the mobility of Barkane dunes and its effects in the palm grove of Jorf (southeast of Morocco)
 
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1
Laboratory of Geo-Environmental Analyses and Sustainable Development - Planning (LAGEA-DD). Sidi Mohamed Ben Abdellah University, Fès, Morocco.
 
2
Research Team: Geography, Planning, Demography, and Development. Ibn Zohr University, Agadir, Morocco.
 
These authors had equal contribution to this work
 
 
Corresponding author
Abdelfattah Ben kacem   

Laboratory of Geo-Environmental Analyses and Sustainable Development - Planning (LAGEA-DD). Sidi Mohamed Ben Abdellah University, Fès, Morocco.
 
 
 
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ABSTRACT
Sand dunes are among the most dynamic geomorphological forms. Their displacement rates vary according to morphological, climatic, topographic, and human factors. Sandy accumulations of different shapes, sizes, and ages encroach upon the palm grove and reduce its agronomic potential. Dune formations, especially barchans, result from wind action and have internal dynamics characterised by constant movement and morphological change. This article studies the barchans in the Jorf area, which extends across the Tafilalet plain in pre-Saharan Morocco, focusing on the Fezna site. The aim is to analyse the annual trends in the direction and movement of barches that may threaten the sustainable use of land resources and nearby human settlements. The migration of twelve barchans was monitored using high-resolution satellite images from 2012 to 2024. The dune movement pattern was also examined. The migration rate of dunes at the Fezna site averaged 9.1 m per year toward the northeast during the study period, compared with an average of 24 m per year between 1951 and 1965. This difference is linked to the installation of protection and control systems against sand encroachment upstream rather than downstream.
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