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Abstract
Assessing groundwater sensitivity in areas contaminated by agri-cultural pollution is a complex task for groundwater resource managers. The Ghriss plain (north-western Algeria) is the basis of agricultural development based on diversified crops, irrigated from a local water table of Plio-Quaternary age, considered to be one of the country’s most important reservoirs. In recent years, the overuse of nitrogenous fertilizers and various phytosanitary products, combined with wastewater discharges, has led to the appearance of traces of chemical elements exceeding drinking wa-ter standards, and to a worrying risk of water quality deteriora-tion. This study aims to measure the different categories of vul-nerability to migration of chemical inputs through the unsaturated zone, to preserve groundwater contamination. The approach con-sists of applying two universal methods: the GOD model and the SI model (Susceptibility Index). The mapping of the two models shows that GOD represents a low concentration of measured ni-trate ions, while SI attributes a high pollution dispersion to the unsaturated zone. From this comparison, the GOD method indi-cates the presence of four classes of vulnerability: high 1%; medi-um 70%; low 28% and very low 1%. On the other hand, the SI comparison shows two classes of vulnerability to pollution: very high to high 72% to 23%; medium to very low 2% to 3%. From this comparative study, we deduce that SI gives us a true picture of the pollution phenomena likely to occur, taking into account the nature of the land use, hence its interest in a more accurate esti-mation of unsaturated zones' vulnerability to groundwater pollu-tion by nitrates.
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References
Batchi, M., Karkouri, J. A., Fenjiro, I., & Maaqili, M. E. (2017). Comparative study of two models (DRASTIC and SI) for assessing the sensitivity of the Mnasra water table (northwestern Mo-rocco) to pollution of agricultural origin. Physio-Geo. Physical Geography and Environment, (11), 43-64. CrossRef
Bekkossa, B. (2009). Modelisation du tranfert et de la propagation des nitrates dans les eaux sou-terraines de la plaine de Ghriss [Modeling the transfer and propagation of nitrates in groundwater of the Ghriss plain]. Thèse de doctorat, Université des Sciences et Technolo-gies d'Oran [PhD thesis, University of Science and Technology of Oran], 1-179.
Bekkoussa, B., Meddi, M & Jourde, H. (2008). Climatic and anthropic forcing on the groundwater resources in a semiarid area: The case of the Ghriss plain. North Western Algeria. Science et Changements Planétaires/Sécheresse, 19(3), 173-184. DOI: CrossRef
Benfetta, H., Achour B & Remini, B. (2011) Problématique de surexploitation des eaux souter-raines dans les zones arides : Cas de la plaine de Ghriss Mascara –Algerie [Problems of overexploitation of groundwater in arid areas: case of the plain ghriss Mascara-Algeria]. Courrier du Savoir, (11), 81-86
Bessaoud, O., Pellissier, J.P., Rolland, J.P., & Khechimi, W. (2019). Rapport de synthèse sur l’agriculture en Algérie [Synthesis report on agriculture in Algeria]. Research report CHEAM-IAMM.2019. HAL Id: hal -02137632, 82. Direct Link.
Bouselsal, B., Zeddouri A., Belksier M.S., & Fenazi B. (2015). Contribution de la Méthode de Vul-nérabilité Intrinsèque GOD à l’Etude de la Pollution de la Nappe Libre d’Ouargla (SE Al-gérie) [Contribution of the GOD intrinsic vulnerability method to studying pollution of the Ouargla free groundwater (S.E Algeria)]. International Journal for Environment & Global Climate Change, 3(4), 92-99.
Corine, L. C. (1993). European Community, Guide technique. Office des publications Officielles des Communautés Européennes. Série environnement, sécurité nucléaire et protection civi-le, Bruxelles [European Community, Technical Guide. Office for Official publications of the European Communities. Environment, Nuclear Safety and Civil Protection Series, Brussels].
Djellouli, R., Hamel, L., Chadli, A., Latreche, A., & Mesri, N. (2007). Analyse et évaluation des ressources hydriques dans la wilaya de Mascara [Analysis and evaluation of water re-sources in the wilaya of Mascara]. Revue des Energies Renouvelables ICRESD-07 Tlemcen, (35), 40-35.
Drias, T., & Toubal, A. C. (2015). Cartographie de la vulnérabilité à la pollution de la nappe allu-viale de tebessa-morsott (bassin versant de l’Oued ksob) extrême Est algérien [Mapping the
vulnerability to pollution of the Tebessa-Morsott alluvial aquifer (Oued Ksob watershed), extreme eastern Algeria]. Larhyss Journal, 22, 35-48.
Foster, S. S. D. (1987). Fundamental concepts in aquifer vulnerability, pollution risk and protec-tion strategy. In Vulnerability of Soil and Groundwater to Pollutants. W van Duijvenbooden, HG van W aegeningh (Eds). TNO Committee on Hydrological Research: The Hague, the Netherlands, 69-86.
Foster, S., & Hirata, R. (1991). Groundwater pollution risk assessment, a methodology using available data. CEPIS Rapport technique, Lima, Perou, 2nd édition, 73.
Gabriel, E., EKE, H., Kouadio, B., Dongo, K., Brou, D., Koffi, K., & Bemi, J. (2010). Application des méthodes DRASTIC et SI pour l’étude de la vulnérabilité à la pollution par les nitrates (N03 -) de la nappe de Bonoua (Sud-Est de la Côte d’Ivoire) [Applying DRASTIC and SI methods for studying vulnerability to nitrate (NO3-) pollution of the Bonoua aquifer (Ivory Coast)]. International Journal Sciences of Biological and Chemical Sciences, 4(5). ISSN 1991-8631, 1684-1679. Direct Link.
Jourba, J.P., Kouame, K.J., Adja, M.G., Deh, S.K., Anani, A.T., Effini, A.T., & Biemi, j. (2007). Evalua-tion du degré de protection des eaux souterraines: Vulnérabilité à la pollution de la nappe de Bonoua (Sud-Est de la Cote d’Ivoire) par la méthode DRASTIC [Evaluation of the degree of groundwater protection: vulnerability to pollution of the Bonoua aquifer (South-East Ivory Coast) using the DRASTIC method]. In: ESRI Francophone Conference, Versailles. SIG2007/10 to 11 October 2007, Versailles-France, 11.
Lemière, B.J., Seguin, C., Le guyonnet. Baranger, P., Darmendrail, D., & Conil, P. (2001). Guide sur le comportement des polluants dans les sols et les nappes. Ministère de l'Aménagement du Territoire et de l'Environnement [Guide on the behavior of pollutants in soils and ground-water application in the context of detailed risk assessment of water resources], BRGM/RP-50662-EN, 11-177.
Murat, V., Paradis, D., Savard, M.M., Nastev, M., Bourque, E., Hamel A., Lefebvre, R., & Martel, R. (2003). Vulnérabilité à la nappe des aquifères fracturés du Sud-Ouest du Québec: Evalua-tion par les méthodes DRASTIC et GOD [Groundwater vulnerability of fractured aquifers in southwestern Quebec: Evaluation using DRASTIC and GOD methods]. Ressources naturelles Canada, Commission GéologiqueNatural Resources Canada, 1-14.
National Water Resources Agency. (2016). Piezometric data of the plain of Ghriss wilaya of Mas-cara, 2016. Report of the West Regional Directorate of Oran. Algeria.
Official Journal of the People’s Democratic Republic of Algeria. (2012). Setting specifications for treated wastewater used for irrigation purposes. (41) (July 15, 2012).
Ouis, S. (2012). Impact des fluctuations climatiques sur la quantité et la qualité des eaux souter-raines d’une region semi-aride: cas de la plaine de Ghriss (Nord-Ouest Algerien) [Impact of climatic fluctuations on the quantity and quality of groundwater in a semi- arid region: case of the Plain of Ghriss (North-West Algeria)]. Larhyss Journal, 11, 119-131.
Ribeiro, L. (2000). Desenvolvimento de um ı´ndice para avaliar a susceptibilida dos aquı´feros a` contaminac¸a˜o, Nota interna [Development of an index to assess the susceptibility of water to contamination, Internal note], ERSHA-CVRM.
Schnebelen, N., Platel, J.P., & Lenindre, Y. (2002). Groundwater management in Aquitaine Year 5. Segment Operation. Protection of the Oligocene Water table in Bordeaux region – Rap-port BRGM/RP-51178-FR. Sl: BRGM.
Sourisseau, B. (1974). Etude hydrogéologique de la nappe de Mascara [Hydrogeological study of the Mascara aquifer]. National Water Resources Agency (NWRA). Water Resources Branch Algeria, 14-16.
Zettam, A (2018). Transfert des nitrates du bassin versant de la Tafna (Nord-Ouest de l'Algérie) vers la mer Méditerranée. Approche couplant mesures, modélisation et changement d'é-chelle vers les grands bassins versants Nord africains [Nitrate transfer from the Tafna catchment (North-West Algeria) to the Mediterranean Sea. An approach combining meas-urements, modelling and change of scale towards large North African watersheds]. Thèse doctorat de l'Université de Toulouse [PhD thesis, University of Toulouse], 1-239.