关键词: 山茶, 物种组成, 植物区系, 物种多样性, 舟山群岛

Abstract: Species composition and diversity of the broad-leaved forest and shrub communities with Camellia japonica were studied based on the investigation of typical plots. The results showed that a total of 147 species of vascular plants, belonging to 118 genera in 65 families, were recorded in 8 plant communities. The geographical elements were various, while the tropical elements outweighed the temperate and subtropical elements,?which showed the transitional characteristics from subtropical to warm temperate and reflected the relative advantage of habitat thermal condition. In communities with Camellia japonica, the species richness and Shannon-Wiener index of the arbor layer presented the significant negative correlation with the succession trend. The species richness and Shannon-Wiener index of shrub layer and liana layer in the higher altitude of shrub and sparse forests were greater than those in the broad-leaved forest. Effected by prominent dominant of the dominant species in corresponding communities, including dominant species Machilus thunbergii, Cyclobalanopsis glauca and Distylium gracile in arbor layer, or dominant species Neolitsea sericea in regeneration layer, the variance of Pielou index of arbor layer and regeneration layer was great.

Key words: Camellia japonica, species composition, flora, species diversity, Zhoushan Archipelago