In addition, ecotypic differentiations in leaf area, specific leaf area, bark, height under branch and crown width were found between hilltop and foot gulch in the studied species.

• 另外，在山顶和山脚调查的几个种群在叶面积、比叶面积、树皮、枝下高和冠幅等方面，均出现了生态型的差异。