浙江丽水太山芒萁灌草丛的物种多样性与生态学特征

通过样方调查,应用物种丰富度、物种多样性指数和群落均匀度等指标对分布在浙江丽水太山山地的芒萁灌草丛不同恢复阶段的物种多样性进行了研究.结果表明,芒萁群落乔木种类较为单一,物种的丰富度、多样性和均匀性都随年龄增加而逐渐增加,灌木层的物种丰富度和物种多样性指数最大,草本层次之,乔木层最小,灌木层-草本层-乔木层的物种多样性依此递减.根据分布生境、群落结构和种类组成,可将该山地灌草丛分为三个类型,即马尾松芒萁群落、杉木芒萁群落和杜鹃芒萁群落.

Plant Diversity and Physiognomy of a Form. Dicranopteris pedata in Taishan Mountain of Lishui, Zhejiang Provcince

Through plot investigation,Plant diversity of the Form.Dicranopter is pedata in Taishan mountain of Lishui in Zhejiang provcince was determined and a nalyzed by using the index of species richness,species diversity and community e venness.The results are given below:t The number of species for Arbor were littl e in community of Dicranopteris pedata.The species richness,diversity and evenne ss were gradually increased as ages.The species richness and diversity index of shrub layer are the biggest,while those of herb layer and arbor layer are the se cond and the smallest respectively. The species diversity decreases from Shrub,H erb to Arbor layer.Three main community types were recognized based on their hab itat,species composition and community profiles:a Pinus massoniana Dicranopteris pedata community,aCunninghamia lanceolata-Dicranopteris pedata community and R hododendron simsii-Dicranopteris pedata community.