【摘要】 通过对武夷山四新常绿阔叶林物种组成、生物多样性以及样方种—面积曲线进行研究,探讨以少叶黄杞为优势种的中亚热带常绿阔叶林生态系统的组成、结构和功能.采用相邻格子样方法进行样方调查,结果表明:样方内维管植物有35科67属139种;以壳斗科、杜鹃花科、杜英科、山茶科为主,栲属、杜鹃花属、杜英属为重要属;优势树种为少叶黄杞、米槠、南岭栲、赤楠.表明四新常绿阔叶林在取样面积大于0.48 hm2时,物种数量趋于稳定,拟合曲线公式为:y=21.836lnx-87.287(R2=0.990 2);样地植物胸径小于6 cm的植株数占73.89%,落叶植物仅占12.38%.多样性分析结果表明:样地内物种丰富,分布较均匀,较多的树种构成了群落的优势种.更多还原

【Abstract】 The species composition and diversity of evergreen broad-leaved forest community of Engelhardtia fenzelii in Sixin area of Wuyi Mountain was investigated by contiguous grid quadrats and species-area curve method. The result showed that there are 139 vascular plant species within sample square,belonging to 67 genera and 35 families. Fagaceae,Ericaceae,Elaeocarpaceae and Theaceaeare are the dominant families. Castanopsis,Rhododendron,Rhododendron,Elaeocarpus,and Syzygium are the dominant genera. Engelhardtia fenzelii,Castanopsis carlesii,Castanopsis fordii,Syzygium buxifolium are the dominant tree species. The fitting equation of species-area curve is y = 21.836 lnx-87.287( R2= 0.990 2),and the species number tends to stabilized when the investigation quadrat area was set up more than 0.48 hm2. The trees with DBH less than 6 cm accounted for 73.89%,and the deciduous species accounted for 12.38% of the total species. Diversity analysis showed that the species was rich and evenly distributed in evergreen broad-leaved forest of Engelhardtia fenzelii in Sixin area of Wuyi Mountain. The abundance was not concentrated in a few species,but more species constituted the dominant species of the community.更多还原