In order to protect Carpinus insularis, an endemic species to Hong Kong, the community characteristics of C. insularis were investigated by using typical plot method. The results showed that there were sixty-eight species vascular plants, belonging to 66 genera, 37 families within a quadrat of 225 m2. Carpinus insularis is the constructive species with the maximum height to 3 m, but its average height in this community is 0.92 m. The C. insularis community in Hong Kong Island showed recession with very few young individuals. Therefore, it was suggested that the managements of in situ and ex-situ conservation would help to re-establish populations.
