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- W2258815890 abstract "La connaissance des caractéristiques du peuplement ligneux du tracé de la Grande Muraille Verte (GMV) du Tchad permet de comprendre leur structure et fonctionnement afin de proposer des stratégies de gestion durable. C’est dans ce cadre que ce travail vise à caractériser la flore et la végétation ligneuses sur le tracé de la GMV du Tchad. La méthodologie utilisée consiste à déterminer la composition floristique et la structure du peuplement ligneux dans les trois sites retenus (Lac, Kanem et Bahr El Ghazal). Les inventaires floristiques ont permis de recenser 18 espèces réparties en 15 genres et 9 familles. La flore ligneuse est dominée par la famille des Mimosaseae. La densité des ligneux (34,67 ind.ha-1) et le recouvrement (1604,30 m².ha-1) sont plus importants au Lac et faible au Bahr El Ghazal (densité de 21,39 ind.ha-1 et recouvrement de 465,66 m².ha-1), quant à la surface terrière, elle est plus élevée au Kanem (3,39 m².ha-1). La distribution par classes de hauteur et de circonférence des ligneux révèle une prédominance des individus de la strate arbustive dans les trois sites. L’étude de la régénération naturelle montre que Acacia raddiana et Balanites aegyptiaca présentent le potentiel de régénération le plus élevé dans les trois sites. Globalement, les résultats obtenus montrent que les espèces les plus adaptées aux conditions écologiques de la GMV au Tchad sont Acacia raddiana et Balanites aegyptiaca et par conséquent, doivent être choisies pour la restauration de ces écosystèmes.© 2015 International Formulae Group. All rights reserved.Mots clés: Tchad, GMV, végétation, peuplement, structure, régénérationEnglish Title: Characterization of the ligneous populatings on the route of the Great Green Wall in ChadEnglish AbstractThe knowledge of ligneous populating characteristics of the route of the Great Green Wall (GGW) of Chad helps to understand their structure and function in order to propose strategies for sustainable management. This study was carried out to characterize the flora and the tree vegetation present on the Chad Great Green Wall (GGW) line. The methodology consisted in determining the floristic composition and the structure of the tree population in three sites: Lac, Kanem, and Bahr El Ghazal. The floristic inventories have identified 18 species distributed into 15 genera and 9 families. Trees are dominated by the Mimosaseae family. Their density (34.67 individuals ha-1) and their recovery (1604.3 m2 ha-1) are more important at Lac and lower at Bahr El Ghazal with 21.39 individuals ha -1 and 465.66 m2 ha-1, respectively. However, the basal area of the vegetation was more important at Kanem with 3.39 m2 ha-1. The distribution by classes of height and circumference of the trees indicates a predominance of the shrub layer in all the three sites. The study of the natural regeneration reveals that Acacia raddiana and Balanites aegyptiaca present the highest regeneration potential in the three sites. Globally, the results obtained in this study show that the most adapted species to the ecological conditions of the Chad’s GGW are Acacia raddiana and Balanites aegyptiaca. Consequently, these species must be considered during the restoration of the given ecosystems.© 2015 International Formulae Group. All rights reserved.Keywords: Chad, GGW, vegetation, population, structure, regeneration" @default.
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- W2258815890 date "2016-02-08" @default.
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- W2258815890 title "Caractérisation des peuplements ligneux sur le tracé de la Grande Muraille Verte au Tchad" @default.
- W2258815890 doi "https://doi.org/10.4314/ijbcs.v9i5.31" @default.
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