摘要
基于2018年对广东罗浮山省级自然保护区5种典型植物群落物种调查数据,分析了各群落的物种组成、垂直结构,选取物种丰富度指数、Simpson优势度指数、Shannon-Wiener多样性指数及Pielou均匀度指数描述植被多样性特征。结果表明:不同林型植被监测样地共记录野生维管植物210种,分属于81科158属,其中,蕨类植物有10科10属11种,珍稀濒危保护植物4种。优势物种主要包括马尾松、木荷、黄樟、密花树等。通过群落聚类分析和群落乔木层主要优势种重要值排序分析,可将16个样地聚为3种森林植被类型、5种群落类型,包括马尾松针叶林、马尾松+木荷针阔混交林、黄樟+华润楠+青冈常绿阔叶林、华润楠-密花树常绿阔叶林、密花树山顶矮林。群落垂直结构可分为乔木层、灌木层、草本层、层间藤本4个层次,乔木上层的建群种主要是黄樟、马尾松,乔木中层常见的优势种有罗浮柿、密花树和木荷,乔木下层高1~5 m,优势种主要有密花树、豺皮樟等。不同群落植物多样性和结构差异明显,季风常绿和山地常绿阔叶林的物种丰富度指数明显高于针叶林、针阔叶混交林和山顶矮林。
5 typical forest communities in Luofushan Nature Reserve were surveyed by using quardart method.Species composition、vertical structure were analysed basingon dividing flora types.Species diversity was analysed by adopting Species richness indexes,Simpson dominance indexes,Shannon-Wiener diversity indexes and Pielou evenness indexes.The results showed that there were 81 families,158 genera and 210 species of tracheophyte on fixed plot in the reserve.Among them,there were 10 families,10 genera and 11 species of pteridophytes and 4 species of rare and endangered protected plants.The dominant species were Pinus massoniana,Schima superba and Cinamomum porrectum、Rapanea neriifolia etc.The16 investigation quadrats had been divided into 5 groups,respectively for form Pinus massoniana forest,Pinus massoniana+Schima superba mixed broadleaf-conifer forest,%Cinamomum porrectum+Machilus chinensis+Cyclobalanopsis glauca broad-leaved forest,Machilus chinensis+Rapanea neriifolia broad-leaved forest,Rapanea neriifolia montane elfin.Community vertical structure can be divided into four layers:tree layer,shrub layer,field layer and Interlayer vine,the high-layer edificator of main Pinus massoniana and Cinamomum porrectum,middle-layer edificatory mainly included the Diospyros morrisiana、Rapanea neriifolia and Schima superba,low-ayer edificator included Litsea rotundifolia、Rapanea neriifolia etc.The diversity and structure of plants in different communities in the reserve area were obviously different.The higher elevation area was mostly the montane mixed evergreen and deciduous broadleavedforest and typical broadleaved forest,community stability and species richness index were higher.
作者
李先霞
杨奇青
潘伟雄
杨丽琼
黄潇洒
LI Xianxia(Guangdong Luofushan Provincial Nature Reserve Guangdong,Huizhou 516133)
出处
《林业科技》
2020年第5期1-5,共5页
Forestry Science & Technology
基金
罗浮山省级自然保护区不同林型植被监测项目(项目编号:政采购2019-07号)。
