Abstract:

With the method of the diameter—changeable sampling plots, the dynamic development of a kind of subtropical broadleaved forest was studied in Heishiding, Hongkai County of Guangdong Province. The vertical structure of the forest was divided into 3 stratums: Ⅰ. under 10m; Ⅱ. 10-20m; Ⅲ. over 20m. The density, frequency and domination of tree species in each stratum were investigated. As the results 4 types of species were proposed and characterized: (1) Declining species: Pinus massoniana, Quercus chungii, Castanopsis carlesii; (2) Developing species: Cryptocarya concinna, Syzygium hancei, Neolotsea phanerophlebia; (3) Stable species: Qrmosia pachycarpa, Machilus breviflora; (4) Unstable species: Lithocarpus synbalanos, Sinosideroxylon wightianum.

Key words: Community dynamics, Method of divided—stratum frequency, Developing species, Stable species, Declining species