固定沙丘生物结皮层藓类植物形态结构及其适应性研究

A Study on Morphological Structure and Adaptability of Mosses Grown in Field Stratum to Fix Sand Dunes

对腾格里沙漠沙坡头地区及其毗邻区域固定沙丘生物土壤结皮层6种有代表性藓类植物形态解剖结构及其适应性进行了观察和系统分析,结果表明藓类植物多样的形态结构特征使其适应沙漠环境中水分缺乏、基质不稳、强光辐射伤害等不利环境因子。正是植物体在繁殖、形态和生理上的适应性组合使得这些藓类植物在极端环境中生存、繁衍、发展,也使得周围的微环境不断得以改善,微环境反过来又促进了结皮层中各种植物的生长,在固定沙丘生态系统中形成了良好的循环,对防风固沙和防止水土流失起着重要的生态学作用。

By observing and systematical analyzing morphological structure and adaptability of 6 representative mosses to fix sand dunes in Shapotou region of Tenggeli Desert and its adjacent areas,it indicates that the characteristics of the variety of mosses' morphological structure makes them adapt to the disadvantageous environment factors such as the lack of moisture,substrate instability,light radiation injury.It's the combination of the adaptabilities in plant propagating;morphological structure and physiology that enable them survive,multiply and develop in extreme environments.Their existence,reproduction,development also make the surrounding micro-environment improved and the micro-environment in turn promotes all kinds of plants grow in field stratum,forming a good cycle in the ecosystem of fixing the sand dunes,which plays an important role in wind breaking,sand-fixing and the conservation of soil and water in the ecology.