苔藓植物的生态环境指示作用

苔藓植物是一类分布广泛、结构简单的高等植物, 由于其特殊的形态和生理特征, 对生态环境的变化较为敏感, 是一类良好的生物指示植物。文中对苔藓植物在植被变迁、大气变化、重金属污染监测等方面的研究进行了综述, 并就苔藓植物的养分来源这一存在争议的问题进行了初步探讨, 认为苔藓植物对化学元素的吸收因植物自身特性的需求和化学元素性质的不同而有所差异。

Review on Bio-monitoring of Bryophyte to Environment Changes

Bryophyte is a kind of widely spreading advanced plant with simple structure,and due to its special morphological and physiological characteristics and its sensitiveness to ecological environment changes,bryophyte is usually taken as an ideal biological indicator. We reviewed the advanced study on the functions of bryophyte in vegetation changes,atmospheric changes,and heavy metal pollution bio-monitoring. We also tried to make a discussion on the nutrient source of bryophyte,which has been a controversial issue for a long time. It was held that bryophytes show varied levels in their absorption of chemical elements owing to their own characteristics and the difference in the nature of chemical elements.