【摘要】 武夷山大安源4800m2样方共记录维管植物31科57属97种植物,其中乔木78种,灌木8种,草本植物5种,藤本植物6种;主要以壳斗科、杜鹃花科、杜英科、山茶科为主,栲属、杜鹃花属、杜英属为最重要的属;优势树种为甜槠(77.10)、马银花(26.70)、鹿角杜鹃(24.68)、薯豆(9.33)、赤楠(8.75),其中甜槠相对胸断面占64.93%;从种-面积曲线可知,大安源常绿阔叶林在取样面积大于4 400 m2后物种数量趋于稳定,拟合曲线公式为:y=21.836lnx-87.287(R2=0.990 2);大安源样地植物胸径小于5 cm的植株数占76.88%,落叶植物仅占12.38%.植物多样性分析结果表明,Simpson指数、Shannon-wiener指数均为南坡大于北坡,Shannon-wiener指数和Pielou指数均随着面积的增加而增加,取样面积2000 m2时,生物多样性值趋于平稳.大安源甜槠常绿阔叶林是典型的东亚中亚热带常绿阔叶林.更多还原

【Abstract】 We investigated the species composition and species diversity in Daanyuan with 4 800 m2area, in Wuyishan mountain. There are 97 vascular plant species,belonging to 57 genera and 31 families. Among them,there are 78 tree species,8 shrubs,5 herbs and 6 lianas. The Fagaceae,Ericaceae,Elaeocarpaceae and Theaceaeare are the dominant families,the Castanopsis,Rhododendron,Elaeocarpus are the vital genera. Based on the important value,C. eyrei,R. ovatum,R. latoucheae,E. japonicas,Syzygium buxifolium are the top 5 dominant species. And C. eyrei have a top RBA value of 64. 93%. The species- area curve show that specie richness stabilized when sampling area over 4 400 m2,and the fitted curve was the logarithmic function equation,y = 21. 836lnx- 87. 287( R2= 0. 990 2). The trees with DBH less than 5 cm accounted for 76. 88%. The deciduous species are accounted for 12. 38% of the total species. Simpson index and Shannon- wiener index of the south slope bigger than north slope. Shannon- wiener index and Pielou index both increased with sampling size,and stabilized at 2 000 m2. C. eyrei evergreen broad- leaved forest in Daanyuan is a typical east asia mid- subtropical evergreen broad-leaved forest.更多还原