Abstract:We analyzed the floristic composition, structure, physiognomy and species diversity of a Schima remotiserrata + Fokienia hodginsii community in Nanling National Nature Reserve, Guangdong, by field investigation of a 1 600 m2 plot at the altitude of 1 400 m. Results showed that there were 113 vascular species, belonging to 75 genera and 45 families. Pantropic elements were the dominant (20.59%), followed by Tropical and Temperate elements which showed obviously transitional characteristic. The community was mainly dominated by Schima remotiserrata, Fokienia hodginsii, and Ilex hanceana, and of complex structure. However, the dominant components scatteredly distributed and were not obviously enough. The vertical structure of the community was composed of arbor, shrub and herb-liana layers, and dominated by evergreen plants in Microphanerophytes (30.97%) and Mesophanerophytes (27.43%). According to the Raunkiaer Frequency Law, species in 1-20% occurrence frequency dominated the community, accounting for 55.75% of the total species. Saplings and young trees comprised the F. hodginsii population, indicating the population was in pioneer stage and with growing status. The diversity indices, such as Margalef richness index, Simpson dominance index, Shannon-Wiener index and Pielou evenness index showed similar trend, with shrub layer>arbor layer>herb-liana layer in the community.
