GIS-Based Model to Assess Erosion Sensitivity in Northern Morocco. Laou Watershed Case Study


This application on the Laou watershed represents the first part of study results that concerns the development of a model for mapping soil susceptibility at a regional scale in northern Morocco using spatial databases and geographic information systems (GIS). The model uses qualitative decision rules and hierarchical organization of data represented by different thematic maps. Those laters are derived from input erosion parameters which are coded according to their sensitivity to water erosion. Superposing effect of several layers: geology, geomorphology, land use and topography, allows we the obtaining of a qualitative map showing the potential sensitivity to erosion per unit area. The obtained map shows that severe erosion affects the Southern and North-western sectors of the basin, even if they present the least erodible lands of all the basin and have, as well, a relatively dense plant cover. It may be concluded that both high gradient and damaged terrain state represent the main factors of water erosion in the Laou watershed.

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A. Raissouni, L. Issa, A. Arrim, M. Maâtouk and R. Passalacqua, "GIS-Based Model to Assess Erosion Sensitivity in Northern Morocco. Laou Watershed Case Study," International Journal of Geosciences, Vol. 3 No. 3, 2012, pp. 610-626. doi: 10.4236/ijg.2012.33061.

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The authors declare no conflicts of interest.


[1] E. Z. Nyakatawa, K. C. Reddy and J. L. Lemunyon, “Pre- dicting Soil Erosion in Conservation Tillage Cotton Pro- duction Systems Using the Revised Universal Soil Loss Equation (RUSLE),” Soil and Tillage Research, Vol. 57, No. 4, 2001, pp. 213-224. HUdoi:10.1016/S0167-1987(00)00178-1U
[2] G. R. Foster and L. D. Meyer, “A Closed-Form Soil Erosion Equation for Upland Areas,” In: H. W. Shen, Ed., Proceeding of Sedimentation Symposium to Honor Prof. H.A. Einstein, Colorado State University, Fort Collins, Vol. 12, 1972, pp. 12.1-12.19.
[3] S. Kuznetsov, U. Feudel and A. Pikovsky, “Renormali- zation Group for Scaling at the Torus-Doubling Terminal Point,” Physical Review, Vol. 57, No. 2, 1998, pp. 1585- 1590.
[4] J. Poesen and J. Hooke, “Erosion, Flooding and Channel Management in Mediterranean Environments of Southern Europe,” Progress in Physical Geography, Vol. 21, No. 2, 1997, pp. 157-199. HUdoi:10.1177/030913339702100201U
[5] J. D. Phillips, “Hillslope and Channel Sediment Delivery and Impacts of Soil Erosion on Water Resources,” International Association of Hydrological Sciences (IAHS) Publications, Vol. 23, No. 184, 1989, pp. 183-190.
[6] P. A. Idah, H. I. Mustapha, J. J. Musa and J. Dike, “Determination of Erodibility Indices of Soils in Owerri West Local Government Area of Imo State, Nigeria,” Assumption University Journal of Technology, Vol. 12, No. 2, 2008, pp. 130-133.
[7] G. Brhane and K. Mekonen, “Estimating Soil Loss Using Universal Soil Loss Equation (USLE) for Soil Conservation planning at Medego Watershed, Northern Ethiopia”, Journal of American Science, Vol. 5, No. 1, 2009, pp. 58-69.
[8] L. Oldeman, R. Hakkeling and W. Sombroek, “World map of the Status of Human Induced Soil Degradation, an Explanatory Note,” Global Assessment of Soil Degradation GLASOD, 1st Edition, International Soil Reference and Information Center, Wageningen, United Nations Environmental Program-I11, Nairobi, 1990, 41 p.
[9] S. D. Angima, D. E. Stott, M. K. O’Neill, C. K. Ong and G. A. Weesies, “Soil Erosion Prediction Using RUSLE for Central Kenyan Highland Conditions,” Agriculture, Ecosystems and Environment, Vol. 97, No. 1, 2003, pp. 295-308. HUdoi:10.1016/S0167-8809(03)00011-2U
[10] D. C. Pimental, “Environmental and Economic Cost of Soil Erosion and Conservation Benefits,” Science, Vol. 267, No. 5201, 1995, pp. 1117-1123.HUdoi:10.1126/science.267.5201.1117U
[11] R. Bou Kheir, M. C. Girard, M. Khawlie and C. Abdallah, “Water Erosion in Mediterranean Environments: A Bibliographic Review,” Soil Survey and Management, Vol. 8, No. 4, 2001, pp. 231-245.
[12] CEC (Commission of European Communities), “Com- munication from the Commission to the Council, the European Parliament, the Economic and Social Commit- tee and the Committee of Regions: Towards a Thematic Strategy for Soil Protection,” Final Report, Bruxelles, 2002.
[13] R. Moussa, M. Voltz and P. Andrieux, “Effects of the Spatial Organization of Agricultural Management on the Hydrological Behaviour of a Farmed Catchment during Flood Events,” Hydrological Processes, Vol. 16, No. 2, 2002, pp. 393-412. HUdoi:10.1002/hyp.333U
[14] V. Souchère, O. Cerdan, N. Dubreuil, Y. Le Bissonnais and C. King, “Modelling the Impact of Agri-Environ- mental Scenarios on Overland Flow in a Cultivated Catchment (Normandy, France),” Catena, Vol. 61, 2005, pp. 229-240. HUdoi:10.1016/j.catena.2005.03.010U
[15] FAO, “Erosion control and Soil Conservation in Morocco. Analysis of Erosion Problems at National Scale,” Report Based on the Works of the Project Team of Experts, Rome, 1975.
[16] H. M. J. Arnoldus, “Prediction of Soil’s Losses by Sheet and Claw Erosion. Watershed Development,” FAO Soils Bulletin: Soil Conservation, 1977, pp. 121-149.
[17] N. Boutayeb, “Impact of Watershed’s Degradation on National Economy,” Proceedings of the National Seminar on Watershed Development, 18-23 January 1988.
[18] MINENV, “Report on the State of the Environment in Morocco,” Secretariat of the State Charged of Water and Environment, Department of Energy, Mines, Water and Environment, Morocco, 2001, 292 p.
[19] B. Heusch, “Prerif Erosion. A Quantitative Study of Water Erosion in the Marly Hills of the Western Prerif,” Directory of Forest Research of Morocco, 1970, pp. 129-176.
[20] M. Benmoussa, M. El Yamani and A. Saidi, “Application of the Universal Soil Loss Equation in the Oued Tasfare Watershed,” Géo-observateur, Vol. 3, 1993, pp. 83-93.
[21] A. A. Fora, “Spatial Modeling of Water Erosion in a Watershed of the Moroccan Rif Chain: Validation of the Geomatic Approach Using Sedimentology, Radioactive Tracers and Magnetic Susceptibility,” PhD Thesis, Sherbrooke University, Sherbrooke, 1995, 231 p.
[22] M. Rahhou, “Erosion in the Central Prerif, Interfluviale Area between Leben, Sebou and Ouergha Rivers, an Ex- tension of Natural Evolution, a Social Production,” PhD Thesis, Mohammed V University, Rabat, 1999.
[23] J. Al Karkouri, “Environmental Degradation in the Beni Boufrah Watershed (Central Rif-Morocco): Spatial Ana- lysis and Modeling,” PhD Thesis, University of Moham- med V, Rabat, 2003, 392 p.
[24] H. Siteri, L. A?t Brahim, F. Sossey Alaoui, I. Al Hamdouni, N. El Hatimi, M. Labraimi, A. Ammar, B. Baghdad, and M. Tahri, “Integration of USLE into a GIS to Determine Specific Degradation of Soils in the Northern Rif (Nakhla Watershed Case Study),” Scientific Institute Bulletin, Rabat, Geology and Physical Geography Series, No. 21, 2003, pp.241-276.
[25] A. Sadiki, S. Bouhlassa, J. Auajjar, A. Faleh, and J.J. Macaire, “Use of GIS for the Evaluation and Mapping of Erosion Risk by the Universal Soil Loss Equation in the Eastern Rif (Morocco): Boussouab Watershed Case Study,” Scientific Institute Bulletin, Rabat, Earth Sciences Series, No. 26, 2004, pp. 69-79.
[26] R. Bou Kheir, M.C. Girard, A. Shaban, M. Khawlie, G. Faour, T. Darwich, “Contribution of Remote Sensing for the Modeling of Soil Water Erosion in the Mountainous Coastal Region of Lebanon,” Teledetection, Vol. 2, 2001, pp. 1-22.
[27] R. Bou Kheir, M.C. Girard, M. Khawlie, “Using a Structural Classification OASIS for Mapping of Landscape Units in a Representative Region of Lebanon,” Canadian Journal of Remote Sensing, Vol. 30, 2004, pp. 617-630.
[28] R. B. Kheir, O. Cerdan and C. Abdallah “Regional Soil Erosion Risk Mapping in Lebanon,” Geomorphology, Vol. 82, No. 3-4, 2006, pp. 347-359.HUdoi:10.1016/j.geomorph.2006.05.012U
[29] R. B. Kheir, C. Abdallah, M. Runnstrom and U. Mart- ensson, “Designing Erosion Management Plans in Leba- non Using Remote Sensing, GIS and Decision-Tree Modeling,” Landscape and Urban Planning, Vol. 88, No. 2-4, 2008, pp. 54-63. HUdoi:10.1016/j.landurbplan.2008.08.003U
[30] O. Cerdan, Y. Le Bissonnais, A. Couturier and N. Saby, “Modelling Interrill Erosion in Small Cultivated Catch- ments,” Hydrological Processes, Vol. 16, 2002, pp. 3215-3226. HUdoi:10.1002/hyp.1098U
[31] O. Cerdan, V. Souchère, V. Lecomte, A. Couturier and Y. Le Bissonnais, “Incorporating Soil Surface Crusting Processes in an Expert-Based Runoff and Erosion Model STREAM (Sealing Transfer Runoff Erosion Agricultural Modification),” Catena, Vol. 46, 2002, pp. 189-205.HUdoi:10.1016/S0341-8162(01)00166-7U
[32] M. T. Harris and J. Boardman, “A Rule-Based Expert System Approach to Predicting Waterborne Soil Erosion,” In: J. Boardman, D. L. Foster and J. A. Dearing, Eds., Soil Erosion on Agricultural Land, John Wiley & Sons, Chichester, 1990, pp. 401-412.
[33] Y. Le Bissonnais, J. Thorette, C. Bardet and J. Daroussin, “Water erosion of soils in France,” INRA, IFEN. 2002, 106 p.
[34] A. André, “Introduction to Physical Geography of the Tangier Peninsula,” Journal of Geography of Morocco, Vol. 19, 1971, pp. 57-75.
[35] P. Fallot, “Essay on the Geology of the Northern Rif,” Notes and Memoirs of the Department of Mines and Geological Maps, Vol. 40, 1937.
[36] J. C. Griffon, “The Limestone Ridge in the South of Tetouan,” Notes and Memoirs of the Geological Service, Geological Studies of the Rif Chain I, Morocco, No. 184, 1966, pp. 149-212.
[37] M. Leikine, “The Haouz Chain in the North of Tetouan (Jbel Dersa),” Notes and Memoirs of the Geological Service, Geological Studies of the Rif Chain II, Morocco, No. 194, 1969, pp. 7-49.
[38] A. Nold, J. Uttinger and W. Wildi, “Geology of the Limestone Ridge between Tetouan and Assifane (Internal Rif, Morocco),” Notes and Memoirs of the Geological Service, Morocco, No. 300, 1981, 233 p.
[39] P. Olivier, “Evolution of the Boundary between Internal and External Zones in the Arc of Gibraltar (Morocco, Spain),” PhD Thesis, Toulouse I University, Toulouse, 1984, 229 p.
[40] P. Lespinasse, “Geology of External Areas and Flyschs between Chaouène and Zoumi (Central Rif chain, Morocco),” PhD Thesis, Toulouse I University, Toulouse, 1975, 248 p.
[41] A. Michard, “Elements of Moroccan Geology,” Notes and Memoirs of the Geological Service, Morocco, Vol. 252, 1976, 408 p.
[42] A. Piqué, “Geology of Morocco, the Regional Domains and Their Structural Evolution,” Pumag, Ed., Rabat, 1994, 284 p.
[43] F. Belhadad, “Geological Study of the Northern Rif’s Internal Zones during the Oligocene and the Miocene. Jbel Zemzem,” Post Graduate Thesis, Mohammed V University, Rabat, 1983, 120 p.
[44] M. Durand Delga, L. Hottinger, J. Marcais, M. Mattauer, Y. Milliard and G. Suter, “Actual Data on the Structure of the Rif Chain,” Out of series Memoirs, Geological Society of France (Memory book P. Fallot), Vol. 1, 1962, pp. 399-422.
[45] INYPSA (INformes Y Proyectos SA), “Operational Program INTERREG II Spain-Morocco,” Analysis of the Current Situation, Coordinated Program for the Development, Recovery and Improvement of the Laou Watershed, Morocco, Vol. 1, 1999, 204 p.
[46] A. Benabid, “Knowledge on Moroccan Vegetation: Phytogeography, Vegetation Phytosociology and Series of vegetation,” Lazaroa, Vol. 14, 1994, pp. 21-97.
[47] A. Benabid, “Flora and Ecosystems of Morocco: Assessment and Biodiversity Conservation,” Ibis Press, París, 2000.
[48] A. El Gharbaoui, “Land and Humans in the Tangier Peninsula: Study on Humans and Natural Environment in the Western Rif,” Scientific Institute Bulletin, Rabat, Geology & Physical Geography Series, No. 15, 1981, 439 p.
[49] M. Ibn Tattou, “Talassemtane National Park: Habitats and Plant Biodiversity,” Unpublished Report, MEDA/MAR/ B7-4100/IB/98/0532, 2005, 48 p.
[50] A. Mokadem, “Talassemtane Park: Strengths, Constraints and Strategy,” Proceeding of the Seminar Theory and Practice of Plant Conservation in Southern Iberian Peninsula and Morocco, Tétouan, 2005, pp. 43-44.
[51] A. Chaara, “Agriculture and Fishing in the Rif Coasts,” Publications of the Tetouan Asmir Association, Morocco, 1996, 112 p.
[52] K. G. Renard, G. R. Foster, G. A. Weesies, D. K. McCool and D. C. Yoder, “Predicting Soil Erosion by Water: A Guide to Conservation Planning with the Revised Universal Soil Loss Equation (RUSLE),” USDA Agricultural Handbook, No. 703, 1997, pp. 126-131.
[53] R. Srinivasan, B. A. Engel, J. R. Wright, J. G. Lee, and D. D. Jones, “The Impact of GIS-Derived Topographic Attributes on the Simulation of Erosion Using AGNPS,” Applied Engineering in Agriculture, Vol. 10, No. 4, 1994, pp. 561-566.
[54] S. T. Udoyara and R. Jolly, “Evaluating Agricultural Non- Point Source Pollution Using Integrated Geographic Information Systems and Hydrologic: Water Quality Model,” Journal of Environmental Quality, Vol. 23, 1994, pp. 25-35. HUdoi:10.2134/jeq1994.23125xU
[55] R. Srinivasan and B. A. Engel, “Effect of Slope Predic- tion Methods on Slope and Erosion Estimates,” Applied Engineering in Agriculture, Vol. 7, No. 6, 1991, pp. 779- 783.
[56] Anonym, “Geological Sheet of Chefchaouen at 1/50000,” Notes and Memoirs of the Geological Service, Morocco.
[57] S. E. M. Saadi, E. A. Hilali and A. Boudda, “Geological Sheet of Bab Taza at 1/50000,” Notes and Memoirs of the Geological Service, Morocco, No. 288, 1975.
[58] S. E. M. Saadi, E. A. Hilali and A. Boudda, “Geological Sheet of Talembote at 1/50000,” Notes and Memoirs of the Geological Service, Morocco, No. 290, 1975.
[59] J. Diddon, “Geological Sheet of Souk Larbaa Beni Hassan at 1/50000,” Notes and Memoirs of the Geological Service, Morocco, No. 454, 2001.
[60] S. Davis and R. Deweist, “Hydrogeology,” John Willey and Sons Ltd., Chichester, 1966, 463 p.
[61] Z. Beydoun, “Petroleum Prospects of Lebanon Re-Eva- luation,” American Association of Petroleum Geological Bulletin, Vol. 61, No. 1, 1977, pp. 43-64.
[62] F.A.O., “Erosion Mapping Using High Resolution Satellite Data and Geographic Information System. Pilot Study in the State of Parana, Brasil,” Remote Sensing Center, Rome, 1990, 147 p.
[63] Food and Agriculture Organisation (FAO), “Field Measurements of the Erosion and Surface Water Flow,” FAO Soils Bulletin, Vol. 68, 1996, 153 p.
[64] J. Garcia-Ruiz, T. Lasanta, P. Ruiz-Flano, L. Ortiza, S. White, C. Gonzalez and C. Marti, “Land Use Changes and Sustainable Development in Mountain Areas: A Case Study in the Spanish Pyrenees,” Landscape Ecology, Vol. 11, No. 5, 1996, pp. 267-277. HUdoi:10.1007/BF02059854U
[65] M. Gay, “Regional Management and Soil Erosion Sensitivity,” Laboratory for Remote Sensing and Digital Mapping, Purpan Haigh School, Toulouse, 1996, pp. 1-8.
[66] W. Kelley, “Keep the Earth Alive: The Soil Erosion, Its Causes and Remedies,” FAO Soils Bulletin, Vol. 50, 1983, 62 p.
[67] M. C. Girard and C. Girard, “Processing of Remote Sensing Data,” DUNOD, Paris, 1999, 529 p.

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