No abstract

Tantan, Tarfaya and Laayoune provinces, which belong to the Moroccan Atlantic Sahara, are characterized by exceptional geo and ecotourism potentials. In this context, singing dunes, sand rivers and the presence of several wadis mouth’s in such desert environment could constitute a locomotive for the development of green and geological tourism. Indeed, the studied region presents Eco and Geo-tourism potentials, combining ecological sites classified by the RAMSAR convention as the Khnifis lagoon, the wadis mouth’s including the longest river in Morocco (Oued Draa) with its new national park. Rivers of sand with multitudes sand colours, singing dunes, virgin beaches and sebkhas with the lowest point in Morocco, the sebkha of Tah with an altitude of -55 m adsl.

Study of climate variability gets great importance for integrated water resources management. This work examines impact of climate variability on the evolution of water resources in the Bandama sub-watershed at Sinematiali with a view of better management. The time series of rainfall and discharge were used as a database for this purpose. Known calculation hydrologic methods of Nicholson, Maillet as well as the statistical test for breaking detection (Pettitt test) were applied. The effective rain and recharge were estimated by using the ESPERE software models over the period 1980 to 1987. Climate variability is characterized by alternative season of wet, normal, and dry periods, and a pluviometry break occurred in 1984 year. The annual effective rain was assessed from 30 to 570 mm while recharge of aquifers estimated between 2 and 333 mm. This work constitutes a fundamental base for modeling water resources management at Sinematiali.

This study focuses on mapping and identification of pollution factors in the Kan dam basin in Bouaké (Côte d'Ivoire); All through the use of GIS and field investigations. The consequences of socio-economic development on the Kan dam are important. Indeed, the watershed of the dam appears to be the outlet for all the waters (used and rain) of the town of Bouaké. The mapping of land use in the dam basin allows the identification of nuisance and pollution sources. Mainly five (05) types of nuisance and pollution activities were identified: urbanization (habitat zones); Agriculture (agricultural areas); Fishing (fishing zone); Poultry farming (poultry farming); Cattle breeding (pasture area).

No abstract