德江沙溪楠木群落结构及物种多样性研究

Study on Community Structure and Species Diversity of Phoebe zhennan in Shaxi of Dejiang County

利用样方调查法对德江沙溪楠木Phoebe zhennan群落的种类组成、结构及物种多样性进行了研究。结果表明:在1 200 m2的样地中,共有维管植物27科32属35种,其中优势科为樟科、壳斗科、蔷薇科等;群落中以楠木和杉木为优势种;群落结构简单,分为乔木层、灌木层和草本层;物种多样性分析显示该群落多样性指数偏低,其多样性复杂程度由高到低的顺序为灌木层、乔木层、草本层。

Research has been made on community species composition,population structure,and species diversity of Phoebe zhennan in Shaxi of Dejiang County by plot method.The results show that 27 families,32 genera and 35 species of vascular plant are distributed in a plot of 1 200 m^2 and Lauraceae,Fagaceae and Rosaceae are the dominant families.Phoebe zhennan and Cunnighamia lanceolata are the dominated in the community.Plant community can be divided into three layers：tree,shrub and herb.The species diversity analysis shows that the diversity index is low,and the complexity of the diversity from high to low is shrub layer,tree layer and herb layer.