无量山中山湿性常绿阔叶林及其植物区系的初步研究

无量山中山湿性常绿阔叶林是其垂直带上最具特征性的植被类型。从这类森林中２３１种优势和常见植物的种类结构分析看，只有热带亚洲成分、东亚中的中国－喜马拉雅成分、和中国特有成分贯穿乔木Ａ、Ｂ层，灌木层，草本层和层外植物几大类中；而中国特有种的进一步分析表明了它的区系成分的亚热带性质，温带性质不是很显著。该地这类森林与云南同类型植被有诸多方面的相似性，但是大致上每一个大的山头有一套植物种类成分，而以各种石栎树种加以区分，其它重要伴生种及伴生种的各类组合千差万别。对这类森林中３５个特有种的分析显示区系平衡点邻近范围有较大的物种分化水平；它们所隶属的属的分析表明，这类植被的温带性质又较该地整体水平为强；它们的近缘种分布区域对无量山此类森林与这些区域相应类型植被的区系联系和分化有一定指示意义

The Preliminary Floristical Study on Mid-Montane Humid Evergreen Broad-Leaved Forest in Mt. Wuliangshan

The mid-montane humid evergreen broad-leaved forest is the most characteristic type of vegetation in the altitudinal zone of the Mt. Wuliangshan. Based on the analysis of the disposition in vertical structure of 231 dominant and frequent species in the forest, it can be shown that there only are Tropical Asia, Sino-Himalayan and Chinese endemic elements penetrating all the synusiae from the canopy to the field layer, including A, B tree layers, shrub layer and so on. It is probably shown that it is floristically subtropical in the forest rather than temperate according to a thorough analysis of the distributions of these Chinese endemic species. Although there is similarity in many respects between this forest and the similar types of vegetation in Yunnan, there is roughly a set of species dominant in every mountain, they can be distinguished in the light of different trees of Lithocarpus and there are various compositions of other main companions and companions between them. The analysis of the distributions of the 35 species endemic to this forest indicates that there is a more obvious speciation within the limits close to the Floristic Equilibrium Point (FEP). It can be shown that the floristic characteristics of this forest is more temperatethan that of the whole mountain from the base to the top. The distributions of relative species of these endemic species probably indicate the more or less floristic relationship and differentiation between this forest and the concerned forests in the concerned areas.