Recherche forestière : libre accès
Libre accès

Abstrait

Changes in Ecological Parameter of Woody Vegetation along Altitudinal Gradient in Jebel ElDair, North Kordofan, Sudan

Ismail Mirghani Ismail*

Qualitative and quantitative data on floristic composition and species diversity of the woody plants on Jabal Eldair - Northern Kordofan State were collected from twenty three circular plots 0.1ha., between elevation ranged from 510 to 1200 m above sea level (asl), which later were divided into three vegetation communities (community I, community II and community III).  According to the dominant plant species, to determine how woody plants species change with increasing altitude. A total number of 1147 plants from 47 species belonging to 22 families were sampled. Number of ecological parameters has been studied for each plant species and vegetation community. These parameters include number of individuals, also the frequency percentage, abundance, density, relative density and importance value index (IVI), in addition to numbers of ecological indices.  Community III was found to be more diverse compared to Communities II and I, using Shannon diversity index (H). It also has the highest species richness and density than the other two Communities.