Dynamique du bilan fourrager et gestion des terroirs agrosylvopastoraux en zone soudanienne du Tchad : cas du canton Lélé

Dassering Oueddo. 2000. Dynamique du bilan fourrager et gestion des terroirs agrosylvopastoraux en zone soudanienne du Tchad : cas du canton Lélé. Créteil : Université de Paris-Val-de-Marne, 197 p. Thèse de doctorat : Sciences et techniques de l'environnement : Université de Paris-Val-de-Marne

Résumé : The sudanian zone of Chad is supposed to play an important role in the agro-pastoral escalation. However, the natural environment degrades essentially under the effect of the anthropic pressure. In canton Lélé, the soils of Manga Dongo, Bologo Nétougou and Serem Kaboutéi are highly populated. Surveys established in 1995 have revealed a very important proportion of youths less than fifteen years. The animal breeding has fathered with the agriculture a strong integration. The study of the ligneous population has allowed following the distribution of abundance, recovering and regeneration. Mainly five ligneous species have been studied because of their interest to forage and their abundance. Their regressions have been established and their available foliar biomass quantified. Tests of FISHER and STUDENT have allowed to constitute homogeneous species groups and to establish their regressions. The study of the food behavior of the ruminants on the pasture has allowed identifying forage species researched, refused or moderately consummated. The statement to forage has allowed equally to evaluate the available vegetable biomass and to appreciate the satisfaction of needs. Holding capacities of the agro-sylvo-pastoral system are started. The expected institutional framework of the information system on environment, supposed to insure compatibility, circulation, valorization and data division of différent institutions. The continuous control and the father ecological research have to be conducted in the long term to apprehend global phenomena (climatical evolution, desertification and degradation of environment) and how local phenomena are influenced, and to provide to administrators the relevant elements for decision-making in management of renewale resources (lasting development).

Mots-clés Agrovoc : type de sol, fourrage, comportement alimentaire, système d'information, projet de développement

Mots-clés géographiques Agrovoc : Tchad

Mots-clés complémentaires : Agrosylvopastoralisme

Classification Agris : L02 - Alimentation animale

Auteurs et affiliations

• Dassering Oueddo, Université de Paris-Val-de-Marne (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/477555/)

Métriques

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