古田山国家级自然保护区甜槠群落物种多样性研究

A study on the species diversity in Castanopsis eyrei community in Gutianshan National Nature Reserve of Zhejiang Province.

研究分析浙江古田山国家级自然保护区甜槠群落植物区系组成和物种多样性结果表明 ,该区甜槠群落共有维管束植物 4 9科 86属 133种 (含变种 ) ,其中蕨类植物 4科 5属 6种 ,裸子植物 2科 2属 2种 ,被子植物 4 3科 79属 12 5种。植物区系成分复杂 ,热带成分比例较高。甜槠群落科、属、种组成多样性较高 ,植物种类丰富且组分复杂 ,群落垂直结构中灌木层乔木层草本层物种多样性依次递减 ,乔木层、灌木层物种丰富度与多样性指数明显大于草本层。

The floristic composition and the species diversity of the Castanopsis eyrei community in Gutianshan National Nature Reserve of Zhejiang Province we re analyzed.The results show that there are 133 species (including varieties)of 86 genera and 49 families in total,including 6 species of 5 genera and 4 families in Peridophyte,2 species of 2 genera and 2 families in Gymnospermae and 125 spec ies of 79 genera and 43 families in Angiospermae.The floristic elements are com plex,and the total rate of tropical distribution is very high.The community has a high diversity of family,genus and species,has a great variety of plants whose composition is complex.In the vertical structure of community,the species diver sity decreases from shrub,tree to herb layer.The species richness and species di versity index of the tree layer and shrub layer are obviously bigger than those of the herb layer.