Quercus aquifoliodes forest is a type of high mountain hard leaf evergreen broad-leaved forests distributing in Hengduanshan Mountain,this paper researches correlation of the minimal areas and the numbers of species inside the minimal areas of Quercus aquifoliodes dwarf forest with altitude gradient at Wolong Nature Reserve in Sichuan Province by the use of Species-area theory.

The results showed that the heterogeneity of the montane elfin forest was strong,variance of the montane elfin forest was mostly extracted the floristic elements.

Species diversity of forest communities of the montane elfin forest was studied by using the method of Shanˉnon-Wiener Index,species evenness,abundance,ecological dominance,the distribution of species-abundance in Shimentai Nature Reserve,Yinde of Guangdong.