Localisation des zones d'accès à l'eau en saison sèche par analyse multicritère dans le bassin versant du Goudébo (région de Yakouta, Burkina Faso)

Ouedraogo, Lucien; Ouédraogo, Blaise; Kabore, Oumar; Yanogo, Pawendkisgou Isidore; Zoungrana, Tanga Pierre; Moussa, Ibrahim Bouzou

doi:10.4000/physio-geo.3374

Cited by 6 publications

(5 citation statements)

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“…Multicriteria analysis alone is incapable of taking into account all aspects of spatially referenced decision problems. For this reason, Kêdowidé (2010) and Ouédraogo and et al (2012) suggest coupling it with GIS to obtain better results [24] [25].…”

Section: Discussionmentioning

confidence: 99%

Multicriteria Analysis by Codification for the Determination of Soil Landscape Units in Forest and Pre-Forest Zones of Cote D’Ivoire: The Case of the Square Degrees of M’Bahiakro and Daloa

Yao,

Baka,

Kassin

et al. 2024

IJG

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Section: Discussionmentioning

confidence: 99%

Multicriteria Analysis by Codification for the Determination of Soil Landscape Units in Forest and Pre-Forest Zones of Cote D’Ivoire: The Case of the Square Degrees of M’Bahiakro and Daloa

Yao,

Baka,

Kassin

et al. 2024

IJG

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“…De nombreux auteurs ayant travaillé sur l'ensemble du territoire burkinabè ont fait des constats similaires. C'est le cas de Ouédraogo (2012 ;2015) (2017) à Bobo-Dioulasso. Ainsi, ces résultats montrent une tendance générale à la baisse des quantités de pluie qui tombent sur le territoire du Burkina Faso.…”

Section: Discussionunclassified

Variabilité Spatio-temporelle de la Pluviométrie dans les Zones Climatiques du Burkina Faso: Cas de Bobo –dioulasso, Ouagadougou et Dori

Karambiri¹,

Gansaonre²

2023

ESJ

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L’évolution de la pluviométrie dans la zone sahélienne a connu d’importantes variations depuis les sécheresses des années 70 et 80. Cette zone est considérée par de nombreux auteurs comme la zone la plus affectée par les variations climatiques de ce siècle avec des paramètres climatiques très variables. Ainsi, cette étude a pour objectif d’analyser la variabilité spatio-temporelle de la pluviométrie dans les trois zones climatiques notamment à Bobo-Dioulasso, Ouagadougou et Dori. Pour atteindre cet objectif, les quantités de pluie annuelle de 1921 à 2018 des stations synoptiques de Bobo-Dioulasso, Ouagadougou et Dori, correspondant aux trois zones climatiques que compte le Burkina Faso ont été mobilisées. Ainsi, pour déterminer les différences de variations spatio-temporelles de la pluviométrie, des indices de précipitation ont été calculés pour identifier les années et périodes humides ou sèches. De plus, les ruptures pluviométriques ont été calculées à l’aide du test de Pettitt pour déterminer les différents cycles de l’évolution de la pluviométrie. Les résultats montrent que la pluviométrie a connu une régression depuis 1921 dans les trois localités, mais avec une forte tendance à la baisse à Bobo-Dioulasso où le coefficient directeur est de -0,01. Cependant à Dori la sécheresse est fréquente et rude qui enregistre deux années extrêmement sèches (1926 et 1987). Outre ces résultats, le test de Pettitt a permis d’identifier des ruptures pluviométriques en 1969 à Dori, en 1970 à Bobo-Dioulasso, puis en 1976 à Ouagadougou. L’ensemble de ces résultats montre une différence d’évolution de ce paramètre dans les différentes zones climatiques. The evolution of rainfall in the Sahelian zone has experienced significant variations since the droughts of the 1970s and 1980s. This zone is considered by many authors as the zone most affected by climate variations this century with highly variable climatic parameters. Thus, the objective of this study is to analyse the spatio-temporal variability of rainfall in the three climatic zones of Bobo-Dioulasso, Ouagadougou and Dori. To achieve this objective, annual rainfall amounts from 1921 to 2018 from the synoptic stations of Bobo-Dioulasso, Ouagadougou and Dori, corresponding to the three climatic zones in Burkina Faso, were mobilised. Thus, to determine the differences in spatio-temporal variations in rainfall, rainfall indices were calculated to identify wet or dry years and periods. In addition, rainfall breaks were calculated using the Pettitt test to determine the different cycles of rainfall evolution. The results show that rainfall has been decreasing since 1921 in all three localities, but with a strong downward trend in Bobo-Dioulasso where the leading coefficient is -0.01. However, in Dori the drought is frequent and severe, with two extremely dry years (1926 and 1987). In addition to these results, the Pettitt test identified rainfall breaks in 1969 in Dori, in 1970 in Bobo-Dioulasso, then in 1976 in Ouagadougou. All these results show a difference in the evolution of this parameter in the different climatic zones.

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“…It is a source of income for more than 80% of Burkina Faso people and contributes 10% to Gross Domestic Product [16]. However, water lack forces pastoralists and their livestock to migrate very often to agricultural areas in the south, in search of water and pasture [17], [18]. In Burkina Faso Sahel region, most of farming involves cattle, goats, sheep, donkeys, pigs, horses and poultry.…”

Section: Studied Sitesmentioning

confidence: 99%

Endogenous Renewable Energies Conversion Into Electricity for Optimal Pumping of Aquifers Groundwater in the Sahelian Area: Case Study in Burkina Faso

2020

IJESRT

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The water lack is a major obstacle to socio-economic development in the Sahel of southern countries. Water resources access being one of necessary conditions for the Sahelian space development, only water control is a lasting solution to Sahel development problem. Surface water being very ephemeral in the Sahel area, groundwater exploitation is essential for satisfying daily water needs, especially in rural areas. However, dewatering at optimal cost of groundwater faces the access to electricity problem, which is essential for pumping water. This work presents the optimization of a pumping system for groundwater stored in aquifers, to increase the offer of water resources access in Sahelian area, at a lower cost per cubic meter. The required electrical energy for pumping is produced from a hybrid electrical system, composed of photovoltaic solar and generator sets running on biogas, produced from animal droppings. The technical and economic optimization is done by Homer software. The simulation is carried out with four sites characteristics, located in the Sahel region of Burkina Faso, in West Africa. Simulation results gave water costs at the four sites: 0.152 $/m3 for Oudalan site, 0.184 $/m3 for Seno site, 0.151 $/m3 for Soum site and 0.152 $/m3 for Yagha site. This pumping system integrates environmental consecrations by calculating equivalent CO2 before and after conversion of biogas into electricity. CO2 quantity avoided is 134,244,818 tons per year. Biogas use in addition to solar photovoltaic as sources of energy for hybrid electric system has made it possible to lessen pumped water m3 cost and reduce significantly polluting and greenhouse gas emissions.

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Localisation des zones d'accès à l'eau en saison sèche par analyse multicritère dans le bassin versant du Goudébo (région de Yakouta, Burkina Faso)

Cited by 6 publications

References 1 publication

Multicriteria Analysis by Codification for the Determination of Soil Landscape Units in Forest and Pre-Forest Zones of Cote D’Ivoire: The Case of the Square Degrees of M’Bahiakro and Daloa

Multicriteria Analysis by Codification for the Determination of Soil Landscape Units in Forest and Pre-Forest Zones of Cote D’Ivoire: The Case of the Square Degrees of M’Bahiakro and Daloa

Variabilité Spatio-temporelle de la Pluviométrie dans les Zones Climatiques du Burkina Faso: Cas de Bobo –dioulasso, Ouagadougou et Dori

Endogenous Renewable Energies Conversion Into Electricity for Optimal Pumping of Aquifers Groundwater in the Sahelian Area: Case Study in Burkina Faso

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