Abstract:

The species composition, importance values of tree population, species diversity and spatial structure of evergreen broad leaved forest community in Bijia mountain of Longyan, Fujian, were analysed. The community is composed of 186 species belonging to 75 families and 132 genera, and the community of richer plant species contains multiple dominance populations. The horizontal spatial pattern of 8 dominance populations conform to aggregated distribution. The tree layer can be divided into multiple layers in terms of height. The species diversity indexes of the second sub layer of tree layer are biggest in the five layers of community vertical structure, except species richness. The species richness and diversity index of herb layer are the second, and the community evenness is the third. The species richness of shrub layer is the first, and the community evenness is the smallest. The species diversity indexes of the first sub layer of tree layer, except the community evenness is the second, are the smallest. The diversity indexes of vine are the third or the fourth. The result also shows that the values of the Simpson's index and the interspecific encounter probability are almost equal in the community.

Key words: Bijia mountain, Evergreen broad leaved forest, Community structure