干旱区生态环境知识资源中心(Arid): Dynamics of sand encroachment in the Gourara, southern Algeria: origins, anthropogenic aggravating factors and prospects

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DOI	10.4000/geomorphologie.zzzzz
	Dynamics of sand encroachment in the Gourara, southern Algeria: origins, anthropogenic aggravating factors and prospects
	Mestoul, Djamel
通讯作者	Mestoul, D (corresponding author), Ecole Polytech Architecture & Urbanisme Alger EPA, Lab Architecture & Environm LAE, Route Beaulieu,BP 177, El Harrach 16200, Alger, Algeria.
来源期刊	GEOMORPHOLOGIE-RELIEF PROCESSUS ENVIRONNEMENT
ISSN	1266-5304
EISSN	1957-777X
出版年	2021
卷号	27 期号:1 页码:53-67
英文摘要	Near the Grand Erg Occidental, the Gourara region, located on its southern edge, is particularly subject to the sand encroachment risk. A diachronic analysis via GoogleEarth, supplemented by field observations, provides information on the evolution of the main forms of wind accumulation as well as on the dynamics of sand encroachment within inhabited areas. This phenomenon, due to the desert nature of the region, is all the more worrying today as it is worsening due to anthropogenic factors. Vulnerability is significantly increased in the Erg's oasis, where the impact of sand encroachment is reflected by the reduction of agricultural areas, soil crusting, obstruction of foggaras lines and connecting roads, etc. On the other hand, in the plateau of Meguiden, it is the new extensions that show a deficit in the fight against sand encroachment. It must be noted that sand encroachment is very active in these sectors, which are, however, provided with a local protection system called dune-afreg. Through case studies, this research has identified new anthropogenic factors, in addition to those cited in the literature, which are responsible for the resurgence of sand encroachment in the various sectors studied. It explains how recent socio-economic transformations have led to the degradation of the secular links with tillage and, consequently, to the abandonment of local know-how, which in the past made it possible to anticipate and manage the risk of sand encroachment. Finally, this study sets out the conditions and challenges for a resilient oasis development against the increased sand encroachment in the region.
英文关键词	Western Erg oasis sand encroachment barchans dune-afreg Gourara
类型	Article
语种	法语
收录类别	SCI-E
WOS记录号	WOS:000662862800004
WOS关键词	LINEAR DUNES
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350407
作者单位	[Mestoul, Djamel] Ecole Polytech Architecture & Urbanisme Alger EPA, Lab Architecture & Environm LAE, Route Beaulieu,BP 177, El Harrach 16200, Alger, Algeria
推荐引用方式 GB/T 7714	Mestoul, Djamel. Dynamics of sand encroachment in the Gourara, southern Algeria: origins, anthropogenic aggravating factors and prospects[J],2021,27(1):53-67.
APA	Mestoul, Djamel.(2021).Dynamics of sand encroachment in the Gourara, southern Algeria: origins, anthropogenic aggravating factors and prospects.GEOMORPHOLOGIE-RELIEF PROCESSUS ENVIRONNEMENT,27(1),53-67.
MLA	Mestoul, Djamel."Dynamics of sand encroachment in the Gourara, southern Algeria: origins, anthropogenic aggravating factors and prospects".GEOMORPHOLOGIE-RELIEF PROCESSUS ENVIRONNEMENT 27.1(2021):53-67.

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