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Flore et végétation ligneuse à la périphérie du Parc National de Waza (Cameroun) : Dynamiques et implications pour une meilleure gestion

Abstract : Environmental restoration development facilities require knowledge of biodiversity (especially of vegetation. In addition, conservation remains a major challenge, hence the need to find new solutions. The current study aims at analyzing the dynamics of flora and timber trees surrounding the Waza National Park and consolidating lessons to improve conservation and sustainable management of timber resources. The methodology used is a combination of botanical and geographical approaches. Three landscape units characterize the WNP and its peripheral zone: savanna grassland, shrub savanna and wooded savanna. Flora and vegetation characteristics are different in the three landscape units. Floristic inventory identified 52 woody species. The mean absolute density of the whole zone is 81 individuals / ha. This density decreases with a decreasing gradient, from outside the park to inside. This gradient depends on the human pressure gradient which also decreases from the external to the internal park area, except when the gradient is reversed by certain factors such as cattle intrusion. The vertical structure shows that the least represented stems are stems for future planting and regeneration stems, with a very large difference from other stems. Regarding temporal dynamics, there is a regression of woody/timber vegetation cover. Each year, 478 ha of this cover disappear and 319 ha of soil degrade. To cope with the observed changes that are of anthropic, natural, bioecological or politico-institutional origin, management options have been proposed among which: zoning, implementation of a REDD + project, restoration land degraded, participatory management and eco-development.
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Evaliste Rémi Jiagho. Flore et végétation ligneuse à la périphérie du Parc National de Waza (Cameroun) : Dynamiques et implications pour une meilleure gestion. Géographie. Université du Maine; Université de Yaoundé I, 2018. Français. ⟨NNT : 2018LEMA3001⟩. ⟨tel-01902605⟩

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