Species Diversity of Tree Layer in a Secondary Evergreen Broad-leaved Forest in the Wawu Mountain

By the method of typical community survey plots,studies were made of tree layer species diversity characteristics in the Wawu Mountain of the secondary evergreen broad-leaved forest. The results showed that(1) 17 species belonging to 16 genera and 10 families constituted species of the secondary evergreen broad-leaved forest tree layer in the Wawu Mountain. (2) Dominant species were Castanopsis platyacantha and Schima castanopsis, mainly associated with broad-leaved tree species of Lithocarpus hancei, Acanthopanax evodiaefolius, Mallotus japonicus, Cyclobalanopsis myrsinifolia etc.(3) Species diversity index was between 1.25~2.68, ecological dominance was between 0.17~0.45, and evenness index was between 0.26~0.47. (4) The secondary evergreen broad-leaved forest succession evolved from double excellent community towards diverse excellent community patterns in the Wawu Mountain.