摘要
对江西三清山国家重点保护植物华东黄杉(Pseudotsuga gaussenii Flous)群落的组成和结构进行了调查研究。结果表明,该华东黄杉群落主要以杜鹃花科(Ericaceae)、松科(Pinaceae)、山茶科(Theaceae)、壳斗科(Fagaceae)、蔷薇科(Rosaceae)、樟科(Lauraceae)和冬青科(Aquifoliaceae)等种类为主,其中热带属和温带属种类分别占54.1%和45.9%,群落优势种及建群种以温带属为主。猴头杜鹃(Rhododendron simiarum Hance)、岩柃(Eurya saxicola H.T.Chang)、台湾松(Pinus taiwanensis Hayata)及华东黄杉在群落中的重要值较高,分别为61.35、45.04、37.61和34.20;年龄结构显示,华东黄杉、台湾松和猴头杜鹃等种群均有一定的衰退趋势。群落多样性指数为3.66,表明该群落介于南亚热带常绿阔叶林与中亚热带常绿阔叶林之间。群落分层明显,乔木层可分为3层,华东黄杉为最顶层,最高可达24 m;物种的生活型以高位芽植物占绝对优势,约76.25%,地上芽植物、地面芽植物和一年生植物分别占5.00%、17.50%和1.25%。
The community composition and structure of Pseudotsuga gaussenii Flous in Sanqing Mountain of Jiangxi Province were investigated and analyzed.The community is composed mainly of tropical genera（54.1%） and temperate genera（45.9%）,and typical families are Ericaceae,Pinaceae,Theaceae,Fagaceae,Rosaceae,Lauraceae and Aquifoliaceae,etc.The dominant species in the community are Rhododendron simiarum Hance,Eurya saxicola H.T.Chang,Pinus taiwanensis Hayata and P.gaussenii,with the important values of 61.35,45.04,37.61 and 34.20 respectively.The population age structure of R.simiarum,Pinus taiwanensis and P.gaussenii belongs to declining population.The Shannon-Wiener index of the community reaches to 3.66,which is between evergreen broad-leaved forests in south subtropic and in middle subtropic.In uprightness structure of the community,arborous layer is divided into three layers,the first one is mainly made up of P.gaussenii,its tallest tree reaches to 24 m.Phanerophyte is the abundant life form（76.25%）,while the percentage of chamaephyte,hemi-cryptophyte and annual plant is 5.00%,17.50% and 1.25% respectively.
出处
《植物资源与环境学报》
CAS
CSCD
2007年第3期46-52,共7页
Journal of Plant Resources and Environment
基金
江西省三清山风景名胜区管理委员会"三清山生物多样性综合考察"资助项目
关键词
三清山
华东黄杉
群落组成
群落结构
分析
Sanqing Mountain
Pseudotsuga gaussenii Flous
community composition
community structure
analysis
