International network for natural sciences – research journal
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Floristic composition, structure and diversity of the woody vegetation of Deux Balé national park, Burkina Faso

By: Boalidioa Tankoano, Mipro Hien, Dibi Hyppolite N'DA, Sibiry Albert Kabore, Paulin Ouoba, Martin Karlson, Valère Carin Jofack Sokeng, Irénée Somda

Key Words: Phytosociology, Plant communities, Floristic diversity, Diametric structure, Burkina Faso.

J. Bio. Env. Sci. 9(4), 249-261, October 2016.

Abstract

Large areas of protected forests in Burkina Faso are degraded yearly due to human pressures and climatic change. The effects of this process are clearly reflected in the state of the forest canopy. This study aims to clarify the local effects of forest degradation in Deux Balé National Park through an assessment of the richness, diversity and structure of the woody vegetation. The floristic analysis revealed a richness of 109 woody species belonging to 30 families, where the most common included Rubiaceae (13.64%), Combretaceae (12.73%), Mimosaceae (11.82%) and Caesalpiniaceae (10.91%). An analysis of floristic diversity and stem diametric structure enabled a separation of 13 plant communities in the area. The stem structure follows a Weibull distribution and shows a prevalence of small trees in the park. Some of the plant communities have values of the parameter of form c lower than 1 and other groups have values of coefficient of form c ranging between 1 and 3.6, which indicates a good health of these plant communities.

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