8种常绿阔叶树木的叶结构特点及其对光照变化的适应性分析

通过对8种常绿阔叶树种和对照种(香樟)的叶结构特征比较,分析它们对光照变化的适应特性。结果显示,由于植物类群系统演化的非同步性,常绿阔叶树种对光照变化的适应方式各有不同,各具特点,需要按各自特点加以分析。比较而言,同科树种的可比性较强。按叶结构特点及其群落等资料综合分析,浙江桂(Cinnamomum chekiangense)和冬青(Ilex purpurea)表现为喜光,灰毛含笑(Michelia foveolata var．cinerascens)其次;大叶冬青(Ilex latifolia)和红茴香(Illicium henryi)表现为耐荫;乐东拟单性木兰(Parameria lotungensis)、云南拟单性木兰(Parameria yunnanensis)等其它种类为中性树种。该研究结果对预测常绿阔叶树种在园林中的合理配植有指导意义。

Leaf structural characteristics of 8 evergreen-broad trees and their adaptation to light

The adaptation to light of 8 evergreen-broad trees and control tree (Cinnamomum camphora) were analyzed by comparing their leaf structural characteristics.The results show that the adaptive manner to light in the evergreen-broad tree is very different for unsynchronization of systemic evolvement in plant groups,so it is necessary to analyze them respectively according to their different characteristics.By comparison,trees of the same family are highly comparable.According to their leaf structural characteristics and community analysis,Cinnamomum chekiangense and Ilex purpurea is sun-tolerant,Michelia foveolata var.cinerascens is close to sun-tolerant;Ilex latifolia and Illicium henryi are shade-tolerant;Parameria lotungensis,Parameria yunnanensis and other trees are between sun-tolerant and shade-tolerant.The results are conductive to the reasonable cultivation of evergreen-broad trees in gardens.