摘要
作者对分布在高山低氧生态环境中的植物进行了内部解剖构造特点的研究,以探讨植物对高寒气候的适应方式和途径.这样对了解青藏高山植物的演化趋势、植物区系以及植物资源提供科学根据.
The authors have Studied the anatomical Structure of alpine plants at an altitude of 3,830 meters above sea level on Qinghai plateau.We discovered that the characteristics of the leaves and stems of alpine plants in structure are as follows: (1) Almost all these plants have a well developed aerenchyma (Intercellular gaps, Canal and Crevice). The appearance of this structure is due to the adaptatiou for them to grow in an environmet of lack of oxygen and carbon dioxide. (2) Most alpine plants have strongly developed mechanical tissue (Collenchyma and Sclerenchyma). (4) The anatomical structure of the identical kind of plants at different destribution altitudes is not the same, especially the aerenchyma. It seems that the altitude of 2,550 meters is a demarcation line of their structural change.
出处
《青海师范大学学报（自然科学版）》
1990年第3期34-47,共14页
Journal of Qinghai Normal University(Natural Science Edition)
关键词
高寒地区
植物
解剖学
青海
Aerenohyma, Altitude, Pressure of oxygea and. carbon dioxide, Adaptation, Natural selection.
