贵州百里杜鹃风景名胜区露珠杜鹃群落研究

Study on Community of Rhododendron irroratum Baili Rhododendron Scenic Spot in Guizhou

以贵州百里杜鹃风景名胜区露珠杜鹃群落样地调查资料为基础,对该景区露珠杜鹃群落的物种组成、生活型、群落结构和物种多样性等生态学特征进行了研究。结果表明:该露珠杜鹃群落有维管束植物10科14属20种,主要为杜鹃花科、山矾科、壳斗科、山茶科、蔷薇科、樟科、禾本科、忍冬科、百合科、里百科的植物;群落结构分析显示:群落生活型以高位芽占绝对优势,是露珠杜鹃和马缨杜鹃群落的建种群,露珠杜鹃对整个群落的结构、组成和多样性起最主要作用,群落结构为稳定型;群落物种多样性指数Shannon和丰富度指数Richness较低,其在群落不同层次的表现规律为:灌木层﹥乔木层﹥草本层。

Based on data collected from investigating sample plots community of Rhododendron irroratum in Baili Rhododendron Scenic Spot in Guizhou,the species composition,life form spectrum,the community structure and the species diversity were analyzed.The results showed that there were 20 species of vascular plants in these communities of Rhododendren irroratum,belonging to 10 families and 14 genera,mainly including Ericaeae,Symplocaceae,Fagaceae,Theaceae,Rosaceae,Lauraceae,Poaceae,Caprifoliaceae,Liliaceae and Gleicheniaceae.The community structure analysis showed that the phanerophytes was dominant in the life form spectrum of the community.Rhododendron irroratum and Rhododendron delavavi were the constructive species,Rhododendron irroratum in the community played a significant role,controlling the structure,composition and habitat situation of the entire community,the community structure had stable emotion.The community of Rhododendron irroratum had low Shannon-Wicncr index and Richncss index,the variation patterns of species diversity index which were discordant among layers： shrub layer＆gt;tree layer＆gt;herbaceous layer.