Academic literature on the topic 'Eau en agriculture – Sahel'
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Journal articles on the topic "Eau en agriculture – Sahel"
Tiberghien, Frédéric. "Eau et agriculture : problématiques actuelles." Pour 213, no. 1 (2012): 37. http://dx.doi.org/10.3917/pour.213.0035.
Full textDrain, Michel. "Eau et agriculture dans l'espace méditerranéen." L'information géographique 66, no. 1 (2002): 53–69. http://dx.doi.org/10.3406/ingeo.2002.2789.
Full textZIMMER, D. "L'action scientifique structurante aquae (eau et agriculture)." Nature Sciences Soci�t�s 10 (April 2002): 101. http://dx.doi.org/10.1016/s1240-1307(02)80145-5.
Full textHabib, Adnane, Kamal Labbassi, Nadia Akdim, and Amina Tadji. "Contribution des données Alos et Landsat dans la cartographie et l'analyse des linéaments dans le Sahel Central (Maroc occidental)." Revue Française de Photogrammétrie et de Télédétection, no. 203 (April 8, 2014): 33–42. http://dx.doi.org/10.52638/rfpt.2013.28.
Full textMartin, Philippe, Jean-Stéphane Bailly, and Flavie Cernesson. "Approche des relations entre eau et agriculture à AgroParisTech." Pour 213, no. 1 (2012): 203. http://dx.doi.org/10.3917/pour.213.0203.
Full textLoudière, Daniel. "Compte rendu du colloque international « sécheresses, étiages et déficits en eau ». UNESCO−SHF." La Houille Blanche, no. 2 (April 2020): 86–88. http://dx.doi.org/10.1051/lhb/2020012.
Full textSissoko, Keffing, Herman van Keulen, Jan Verhagen, Vera Tekken, and Antonella Battaglini. "Agriculture, livelihoods and climate change in the West African Sahel." Regional Environmental Change 11, S1 (November 3, 2010): 119–25. http://dx.doi.org/10.1007/s10113-010-0164-y.
Full textSangare, D., B. Sawadogo, M. Sou/Dakoure, D. M. S. Ouedraogo, N. Hijikata, H. Yacouba, M. Bonzi, and L. Coulibaly. "Ecological sanitation products reuse for agriculture in Sahel: effects on soil properties." SOIL Discussions 2, no. 1 (March 31, 2015): 291–322. http://dx.doi.org/10.5194/soild-2-291-2015.
Full textFox, P., and J. Rockström. "Supplemental irrigation for dry-spell mitigation of rainfed agriculture in the Sahel." Agricultural Water Management 61, no. 1 (June 2003): 29–50. http://dx.doi.org/10.1016/s0378-3774(03)00008-8.
Full textSedano, Fernando, Vasco Molini, and M. Azad. "A Mapping Framework to Characterize Land Use in the Sudan-Sahel Region from Dense Stacks of Landsat Data." Remote Sensing 11, no. 6 (March 16, 2019): 648. http://dx.doi.org/10.3390/rs11060648.
Full textDissertations / Theses on the topic "Eau en agriculture – Sahel"
Thébaud, Brigitte. "Gestion de l'espace et crise pastorale au Sahel : étude comparative du Niger oriental et du Yagha burkinabé." Paris, EHESS, 1999. http://www.theses.fr/1999EHES0079.
Full textDiallo, Mamadou. "Problemes economiques de la maitrise de l'eau dans le sahel : le cas des petits perimetres irrigues avec l'eau souterraine." Paris, ENMP, 1988. http://www.theses.fr/1988ENMP0123.
Full textYobom, Oudah. "Climate Change, Agriculture and Food Security in Sahel." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCG001.
Full textThis thesis deals with the impact of climate change on agriculture and food security in the Sahel zone that we define as a region comprising 12 countries and 52 agroecological zones within these countries. The study area covers Burkina Faso, Djibouti, Eritrea, Ethiopia, Mali, Mauritania, Niger, Nigeria, Senegal, Somalia, Sudan and Chad. The situation in this part of the world is strongly impacted by climate change because agriculture, largely rainfed, plays an important economic role there. Climate change is then expected to have an impact on food production, which will make food availability and access even more difficult.From a theoretical point of view, this thesis aims to feed the literature on climate change and its effects on agricultural sectors in the world, particularly in the Sahel, by focusing on agroecological zones. From an empirical point of view and by using a range of statistical and econometric techniques, this thesis takes into account the agricultural and climatic characteristics of each country and agroecological zones of the Sahel.In the first chapter, we deal with the issue of climate change and variability based on precipitation and temperature during the different seasons of the countries and agroecological zones of the Sahel. Using a linear regression model and an endogenous structural change model, we show that countries and agroecological zones are indeed affected by climate change and that the year 1980 is an essential point in explaining this phenomenon for both scales. We also show that desert and arid areas suffered a large number of shocks from 1901 to 2016, with the exception of Nigeria, where wetlands and non-desert areas suffered several shocks.In the second chapter, we study the relationship between climate change and variability, measured by temperature and precipitation conditions in the rainy seasons, and agricultural production at country level and at the level of agroecological zones in the Sahel. Focusing on an agricultural production index and five cereals (corn, millet, sorghum, wheat and rice), we study this relationship using an original database with socio-economic and climate variables. On the basis of an estimated agricultural production function for the 1961-2016 period, we show that precipitation and average temperatures during the growing season have very heterogeneous effects on agricultural production according to the cereal and agricultural zone, depending specific needs and stress linked to the cereal and agronomic and climatic conditions of each zone.In the third chapter, we analyze the link between climate change and food security in the Sahel countries. Based on a multidimensional analysis of food security and a panel data model with delayed climate variables of interest, we show that drought and floods negatively affect food security. In the presence of these climatic disasters, floods cause more damage to food security. Socioeconomic factors also play an important role in food security. Our results show that the low level of economic development, population growth and inflation of food prices do not guarantee food security. In addition, the absence of conflicts and political stability are important levers for improving the food security situation of the populations
Jackowska, Jonathan. "De l’eau et des idéaux. Les formes d’engagement des organisations de la société civile à l’ère de la gouvernance de l’eau au Sahel. Pistes de réflexion dans le domaine de l’accès à l’eau potable." Thesis, Paris 4, 2011. http://www.theses.fr/2011PA040049.
Full textThe participation of non-state actors (e.g., civil society organizations, private companies) in the management of public affairs is one of the major characteristics of governance. In its contemporary meaning, this notion implies a redefinition of the role of the State and invites to the delegation of public utilities. It leads to the promotion of the lucrative and non profit-making private sector. In the field of access to drinking water in Sahel, numerous civil society organizations (CSOs) dedicate themselves to the provision of services, carrying out social missions which fell previously within the State prerogatives’. Most CSOs follow the structural reforms (e.g., pricing, private sector participation) which have been introduce for the past twenty years in hydraulics, both in the urban and rural areas. On the contrary, some CSOs dispute the current structural changes through the denunciation of the « commodification » of water as well as the « privatization » of water supply utilities that favour large transnational private operators. They denounce certain CSOs that would contribute, through their actions, to the inculcation and to the validation of principles promoted by the reforms. The plurality of the representations of water, the variety of the promoted modes of water management : these different points of view which feed the public controversies, the oppositions – but sometimes arouse the mergers – between CSOs, private companies, States and institutional sponsors are in the heart of our thesis. The inter-association relations are also considered. If problems are often perceived from a similar point of view and necessity to reform widely acknowledged, important differences lay between actors when considering the solutions to propose and the type of reforms to implement
Gozé, Eric. "Modèle stochastique de la pluviométrie au Sahel : application à l'agronomie." Montpellier 2, 1990. http://www.theses.fr/1990MON20250.
Full textJouve, Philippe. "Adaptation des systèmes de production à l'aridité au Maroc et au Sahel." Montpellier 3, 1993. http://www.theses.fr/1993MON30033.
Full textThis works oriented thesis presents the results of researches undertaken in morocco and in the sahel about the adaptation of agricultural production systemes to aridity. It comprises two volumes. In the first one, a foreword retraces the professional career of the author and indicates the main reasons of the choice of the thesis topic. Then a first part shows the main characteristics and the specificity of the aridity in morocco and in the sahel with their agronomical consequences as well. In the second part, the cropping systems adopted in the two zones are described and their practises and strategies against climatic hazards are analyzed. The third part is about the presentation and discussion of the results of researches geared at adapting the production systems to aridity. In particular, the pathways and means of improving the water availability of rain cultivation and the efficiency of rains. At last, the possibility to fight aridity through irrigation is examined. A comparative analysis of both the morocco and the sahelian, most contrasted experience in this field, allows to discuss the conditions of success of irrigation. The second volume gathers a selection of 18 publications of the author about the study of the agricultural production systems and their adaptation to aridity
Devaux, Pascal. "La relation entre le crédit et l'investissement en milieu rural sahélien." Lille 1, 1999. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1999/50374-1999-9.pdf.
Full textThe part of credit in the agricultural investment decision is particular in sahelian zone given nonseparability of production and consommation decisions. Empirical studies allow to establish that sahelian farmers face an uninsurable background risk. The farmer's investment decision is therefore both affected by income maximisation and income securisation. In integrating credit into investment decision, we have to consider multiple source of risk : the income risk and the investment risk. The hypothese of prudent and strong risk aversion in ross sense behaviour allow to consider a double effect of credit on the investment decision : an incitative wealth effect linked to the increase in available liquidity, and a negative debt effect on investment. This debt effect is linked to the consequences of a debt to repay from an uncertain futur income. Beyond strictly productive elements, the relationship between credit and investment in rural sahelian zone depends on the income level and the income risk. The negative impact of financing investment by credit on income risk can lead sahelian producer not to invest, or to favour divisible and liquid agricultural investments, in order to minimise the debt and its effects on risk. Natural agricultural environment is likely to be affected; in furthering investment linked to extensive agriculture to the detriment of soil conservation investment, the latter being undivisible and illiquid
Ibrahim, Maimouna. "Impacts des changements d'usage des sols sur les ressources en eau souterraine au Sahel nigérien." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20046/document.
Full textIn semiarid sub-Saharan Africa, the rapid population growth (~3%.yr-1) during the past few decades has resulted in land clearing and large-scale conversion from savannah and fallow to rainfed or irrigation crop fields. The traditional duration of fallow has been also shortened. In order to estimate the impact of these land use changes on groundwater recharge, the vadose zone was investigated during three years (2009-2011) for two regions located in Niger (south-west and south-east).A qualitative analysis was first carried out for identifying vadose zone properties and for characterizing the corresponding water fluxes (0-10 m depth) for the main land use types: natural savannah; fallow; rainfed millet crop; and irrigated sweet pepper crop. Grain size and electrical resistivity profiles were established and soil water content and matric potential were monitored. Based on the results of this analysis, two more detailed investigations were performed.In southwestern Niger, in order to estimate changes in diffuse recharge from a fallow with Guiera senegalensis to a rainfed millet crop (Pennisetum sp.), a physically-based modeling with Hydrus-1D code was completed. Probability density functions were first built for the soil hydraulic parameters based on the GLUE approach; then, deep drainage (0-10 m depth) was simulated for a 2 × 100 year time-period including a fallow-millet conversion. It was shown that the increase in millet crop areas could result in an increase in deep drainage from 20 to 25 mm.yr-1 after a delay of 35 to 60 years.In southeastern Niger, in order to assess the impact of rainfed and irrigated cropping development on soil and groundwater salinization, major ion concentrations in pore water of the vadose zone were measured and compared with the geochemical composition of water inputs (rainfall, irrigation). It was shown that rainfed cropping does not affect soil water and groundwater quality whereas irrigation results in an increase of solutes concentrations in soil pore water, which could lead to a groundwater salinization at mid-term through soil leaching
KANE, MAMADOU LAMI. "Les petites villes du Sahel du Sénégal." Université Joseph Fourier (Grenoble), 1989. http://www.theses.fr/1989GRE1A001.
Full textThe senegalese sahel is characterized by a very old but still discontinuous urbanization. Since senegal was independent in 1960, deep changes have occured, which have given birth to a new urban setup. During all that time, the rate of the population increase in those small towns has by and large remained high. In small urban centres, farm activities play an essential part in that they promote the development of other economic activities. Farmproduce industry has successfully contributed to the wealth of richard toll and dagana in the senegal delta, while both the tightness of the local market and the low income of the population have shrunk the expansion of craft industry. The road system development has led up to bypass old colonial commercial stops. Presently, small, urban trade confines itself to the redistribution of manufactured and food-producting goods. Lastly, small towns are also characterized by their inedequate equipement but, for some years, they have been tending to differentiate as far as housing conditions ans social development are concerned
Gafsi, Fadia. "Géopolitique de l'eau au Sahel dans la Tunisie postrévolutionnaire. Contexte de crise : tension sur la ressource, réponses institutionnelles et sociétales." Thesis, Montpellier 3, 2017. http://www.theses.fr/2017MON30080.
Full textTunisia, the country from which sparked the revolutionary uprising in December 2010, presents a political and economic situation that has continued to evolve in a direction that is not always positive. It is characterized by instability and sometimes anarchy, which has had repercussions in all areas, particularly in the vital area of water, which management has been severely disrupted.In this perspective, this resarch is intended, based on a series of surveys and interviews, to contribute to a better understanding of the risks of water scarcity for the various actors in charge of the management of the resource in the area of the Tunisian Sahel (Sousse-Monastir). It proposes a critical analysis of the different interactions between the factors of scarcity and the indicators of water crisis in connection with the socioeconomic and geopolitical situation. The results of these investigations show a very delicate situation especially after the Revolution. However, levels of scarcity vary from one county to another eventhough the feeling of water stress is widespread in the tunisian Sahel. The study also offers a spacialized dataset that can be integrated into a Geographic Information System (GIS), as well as a battery of individual and collective adaptation measures for a more efficient water management based on taking into account perceptions
Books on the topic "Eau en agriculture – Sahel"
Bukari, Université Mande. Les transformations de l'agriculture au Sahel. [Bamako, Mali]: Editions Le Cauri d'Or, 2003.
Find full textFakhfakh, Mohamed. Projet eau potable en Tunisie centrale: Cartographie des resources en eau et population. Binghamton, N.Y: Institute for Development Anthropology, 1987.
Find full textBroekhuyse, Jan. The organization of rural society in the Sahel. Amsterdam: Royal Tropical Institute, 1989.
Find full text1942-, Olsen Ole, ed. Indigenous integrated farming systems in the Sahel. Washington, D.C: World Bank, 1992.
Find full textBonfils, Michel. Halte à la désertification au Sahel: Guide méthodologique. Wageningen, Pays-Bas: C.T.A., 1987.
Find full textGrand, Yves Le. Tradition pastorale et modernisation des systèmes de production au Sahel. Paris: L'Harmattan, 1998.
Find full textLeisinger, Klaus M. Überleben im Sahel: Eine ökologische und entwicklungspolitische Herausförderung. Basel: Birkhäuser Verlag, 1992.
Find full textJayne, Thomas S. Technology and agricultural productivity in the Sahel. Washington, DC: U.S. Dept. of Agriculture, Economic Research Service, 1989.
Find full textChangement pour lutter contre la famine dans le Sahel. Paris: Pensée universelle, 1985.
Find full textBook chapters on the topic "Eau en agriculture – Sahel"
Breman, H. "Sustainable agriculture in the Sahel? (Integrated farming, perennials and fertilizers)." In Systems Approaches for Sustainable Agricultural Development, 213–35. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0121-9_12.
Full textLèye, Babacar, Cheick Oumar Zouré, Roland Yonaba, and Harouna Karambiri. "Water Resources in the Sahel and Adaptation of Agriculture to Climate Change: Burkina Faso." In Climate Change and Water Resources in Africa, 309–31. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61225-2_14.
Full textTechoro, Prosper Somah, and Michael Schmidt. "The Cumulative Impacts of Climate Change on Subsistence Agriculture in the Sudano-Sahel Zone of Cameroon: Enhancing Adaptation Policies." In Environmental Protection in the European Union, 219–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-540-77614-7_14.
Full textHarris, Ray, and Khalid Koser. "Agriculture and Fishing." In Continuity and Change in the Tunisian Sahel, 98–106. Routledge, 2018. http://dx.doi.org/10.4324/9781351161121-11.
Full text"Agriculture." In Rapport mondial des Nations Unies sur la mise en valeur des ressources en eau 2017, 71–79. UN, 2017. http://dx.doi.org/10.18356/868b082e-fr.
Full textYERGEAU, Michel, Christian PRÉVOST, Bertin Goze BÉNIÉ, and Ferdinand BONN. "Intégration de données multisources pour la gestion des ressources en eau au Sahel." In Télédétection de l'environnement dans l'espace francophone, 457–78. Presses de l'Université du Québec, 2011. http://dx.doi.org/10.2307/j.ctv18pgwp2.39.
Full text"Alimentation et agriculture." In Rapport mondial des Nations Unies sur la mise en valeur des ressources en eau 2021, 73–86. United Nations, 2021. http://dx.doi.org/10.18356/9789214030157c011.
Full textSalack, Seyni, Koufanou Hien, Namo K. Z. Lawson, Inoussa Abdou Saley, Jean-Emmanuel Paturel, and Moussa Waongo. "Chapitre 2. Prévisibilité des faux-départs de saison agricole au Sahel." In Risques climatiques et agriculture en Afrique de l’Ouest, 31–43. IRD Éditions, 2020. http://dx.doi.org/10.4000/books.irdeditions.36114.
Full textToulmin, Camilla. "Facing an uncertain future." In Land, Investment, and Migration, 198–232. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198852766.003.0008.
Full textBoughton, D., T. Reardon, and J. Wooldridge. "Determinants of Diversification of Urban Sahel Diets into Maize: A Contingent Valuation Study of Processed Maize Demand in Mali." In Food Security, Diversification and Resource Management: Refocusing the Role of Agriculture?, 317–24. Routledge, 2018. http://dx.doi.org/10.4324/9780429457326-21.
Full textReports on the topic "Eau en agriculture – Sahel"
Keller, A., E. Weight, and S. Taylor. Évaluation rapide de la disponibilité en eau et des technologies appropriées pour la petite agriculture: directives pour les acteurs de terrain. International Water Management Institute (IWMI)., 2013. http://dx.doi.org/10.5337/2014.227.
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