云南九龙山自然保护区水青冈群落物种多样性及群落特征

采用典型样方调查法,对云南九龙山自然保护区内的水青冈群落生物多样性及群落特征进行研究,共设置7个30 m×30 m的样方,从群落的物种组成、重要值、物种多样性、种群年龄结构等方面进行分析。结果表明:云南九龙山水青冈群落中共有维管束植物81种,隶属48科71属,其中蔷薇科为优势科;物种丰富度、多样性、均匀度和优势度在所有群落中均表现为草本层>灌木层>乔木层;在水青冈种群年龄结构中,Ⅳ级和V级所占比例为21.4%、78.6%,未发现幼苗、幼树分布,表明种群自然更新不良,表现为衰退型。提出减少人为干扰因素,促进群落自然更新,建立种群动态数据库,在保持群落物种多样性的同时注重维持群落稳定性等保护建议。

Community Characteristics and Species Diversity of Fagus longipetiolata in Jiulongshan Nature Reserve of Yunnan

The 7 forest plots of 30 m×30 m was set up by the typical sample plot survey method to study the characteristics and biodiversity of Fagus longipetiolata community in Jiulongshan Nature Reserve of Yunnan from the species composition,important value,species diversity and age structure of the community.The results showed that:there were 81 species of vascular plants belonging to 71 genera and 48 families in the F.longipetiolata community and Rosaceae was the dominant family;The species richness,diversity,evenness and dominance were herb layer>shrub layer>arbor layer;In age structure of F.longipetiolata population,the individual of IV and V occupied 21.4%and 78.6%,and no seedlings and saplings were found in the community,which showed the poor natural regeneration in the population.This paper suggested to reduce human disturbance,promote natural regeneration of community,establish population dynamic database,and pay attention to maintaining community stability while maintaining species diversity of community.