植物本身的生物学特性因自然环境因素的长期影响,自然分布随海拔高度而变化,形成垂直分布的自然景观。了解植物对环境的适应能力,与其自身的解剖结构的关系,从解剖学的角度进行探讨,对于揭示植物自然分布的内在联系,是有一定意义的。我们于1982—1983年,在四川米亚罗选择代表针阔混交林、暗针叶林、高山灌丛的主要建群树种,冷杉、云杉、桦木等叶片进行解剖观察。 The biological characteristics of plant itself due to the long-term effects of natural environmental factors, the natural distribution of altitude changes, forming a vertical distribution of the natural landscape. To understand the adaptability of plants to the environment and their relationship with their anatomical structures and to explore anatomically is of some significance for revealing the intrinsic relationship of plant natural distribution. In 1982-1983, we selected the main populations of coniferous and broad-leaved mixed forests, dark coniferous forests and alpine shrubs in Mianyaru, Sichuan Province to conduct anatomical observation on the leaves of fir, spruce and birch.