摘要
大兴安岭南部山地坐落在蒙古高原草原区与辽河平原草原区的分水界上，北边与大兴安岭北部山地针叶林区一脉相连，南边与华北燕山山地夏绿润叶林相接．因此本区植物区系与周边植物区系发生广泛的相互交流与分化．对大兴安岭南部山地植物区系多样性及其性质进行了统计、分析，并与周边地区植物区系作了比较．该地区拥有野生维管植物１０４科，４３１属１０３１种．其植物属可划分为１５个分布区类型和３１个变型，植物种可划分为２８个分布区类型．其中温带成分数量最多，东亚成分在群落中的作用最为突出，蒙古草原成分渗透强烈，是一个植物种类相对较丰富、成分混杂、过渡性的年轻植物区系。
The southern sector of the Great Kingan Mountains lie on the east edge of Mongolia Plateau steppe region. The 1031 species of vascular plants,beloning to 104 families and 431 genera,have been recorded now . Based on the statistics and analysis at generic and specific levels, and the comparison with the relationship of the surrounding floras ,the results show that the geographic elements of the flora are complex and diverse, but the numbers of temperate elements is the most ;the East-Asia elements play a leading role in the zonal forest vegetation ; the steppe elements infiltrate strongly to the flora;the flora is a young flora where there are not endemic and old plants,the flora is a transitional flora which are connected with the other surrounding folristic regions ,particularly with the East-Asia flora ,and is an important pivot and passageway to connect surrounding floras.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
1997年第4期553-562,共10页
Journal of Inner Mongolia University：Natural Science Edition
基金
国家自然科学基金
