作　　者： ; ;

机构地区： 内蒙古师范大学生命科学与技术学院生物科学系

出　　处： 《内蒙古师范大学学报（自然科学汉文版）》 1998年第1期57-61,共5页

摘　　要： 在《内蒙古植物志》第２版苔草属修订工作和野外工作的基础上，对贺兰山苔草属植物的区系特点、地理分布和生态环境进行了研究．结果表明：（１）苔草属是贺兰山植物区系组成的重要属之一，共有２０种，１变种．新记载内蒙古新纪录３种，贺兰山新纪录１种．（２）贺兰山苔草区系特点表现为多种区系成分汇集、温带成分占主导的性质．通过与邻近山体和相关地区苔草的比较，也表现出与周边地区区系相互交流和渗透的特点．（３）在垂直分布方向上，贺兰山苔草主要分布于海拔１９００～３１００ｍ的山地针叶林带之内，而其它垂直带中种类相对要少．这些苔草的生境变化多样，能够适应贺兰山的复杂环境． On the basis of our revision on Flora Intramongolia(second edition) and field work,the floristic characters,geographical distribution and habitats of Carex in Mt.Helan have been discussed.The results are as follows:(1) Genus Carex(Cyperaceae) is one of the richest generain in Mt.Helan flora,which consists of 20 species and 1 verity,and among which includes 3 new records in Inner Mongolia and 1 newrecord in Mt.Helan. (2) Dominating temperate species and mixed geographical elements,is the feature of Mt.Helan flora.By comparison with adjoning regions and mountains,the Mt.Helan flora is closely related to and connected with these flora.(3) On vertical direction,the distribution of Carex mainly is in neadle leaves forest (1900～3100m above sea level), and there are a few Carex species in others vertical zone.Besides,the complex habitats of Carex are also discussed in the paper.

关 键 词： 贺兰山 苔草属 地理分布 植物区系

领　　域： [生物学]