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Groundwater vulnerability and risk mapping of the Angad transboundary aquifer using DRASTIC index method in GIS environment

انجاز خارطة هشاشة المواد المائية و خارطة المخاطر الخاصة بالمائدة المائية لمنطقة أنكاد الحدودية باستخدام الأنموذج الدراستيكى المدمج في نظم المعلومات الجغرافية

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Abstract

The protection and preservation of groundwater resources are compulsory, particularly in the arid and semiarid countries where the waters are scarce. The effects of increasing urbanization, economic development, and agricultural activities, along with the erratic and scarce rainfall, contribute to the quantitative and qualitative deterioration of these resources. This paper attempts to produce groundwater vulnerability and risk maps for the Angad transboundary aquifer using DRASTIC model. The data which correspond to the seven parameters of the model were collected and converted to thematic maps in Geographic Information System environment. The modified DRASTIC map, which is the summation of the DRASTIC index and the network fractures maps, shows two degreed of vulnerability: medium and high. This map is then integrated with a land use map to assess the potential risk of groundwater to pollution in the Angad transboundary aquifer. There are three risk zones that are identified: moderate, high, and very high.

إن حماية الثروات المائية الجوفية أمر مهم, خاصة في المناطق الجافة و الشبه الجافة المعروفة بقلة هذه الثروات. يعتبر التوسع الحضري و النمو الاقتصادي إضافة إلي الأنشطة الفلاحية المصحوبة بقلة التساقطات المطرية من أهم العوامل المؤدية إلي التدهور الكمي والنوعي للثروات الجوفية المائية.

هذا المقال يهدف إلي إنشاء خارطتي الهشاشة و المخاطر الخاصة بالمائدة المائية لمنطقة أنكاد الحدودية وذلك باستعمال الأنموذج الدراستيكى. المعطيات الخاصة بالمقاييس السبع المكونة للأنموذج ثم جمعها و تحويلها إلي خرائط موضوعية بإدماجها في نظم المعلومات الجغرافية.

الخارطة الدراستيكية المنقحة الناتجة عن جمع خارطة المعامل الدراستيكى و خارطة شبكة الانكسارات تبين نوعين من الهشاشة: متوسطة و عالية. هذه الخارطة تم جمعها فيما بعد مع خارطة استخدامات الاراضى من اجل اختبار مخاطر تلوث مياه المائدة المائية لمنطقة أنكاد الحدودية. ثلاث مناطق تم رصدها: متوسطة, عالية و جد عالية.

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Correspondence to Alae-eddine Barkaoui.

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Boughriba, M., Barkaoui, Ae., Zarhloule, Y. et al. Groundwater vulnerability and risk mapping of the Angad transboundary aquifer using DRASTIC index method in GIS environment. Arab J Geosci 3, 207–220 (2010). https://doi.org/10.1007/s12517-009-0072-y

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  • DOI: https://doi.org/10.1007/s12517-009-0072-y

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