贺兰山西麓复杂的环境与气候培育了多样的植物种类和植被类型。在大量野外调查的基础上,研究了贺兰山西麓的植物区系、植被分类系统及类型、主要植被类型概况等。结果表明:研究区共有野生维管植物357属788种,区系地理成分主要为温带分布;研究区植被类型包括森林、灌丛、草原、疏林、荒漠、草甸和水生、沼生植被;最后分别从垂直分异、水平分异、坡向分异对研究区植被空间格局进行了研究。

The complex environment and climate of west Helan Mountains in Inner Mongolia cultivate a variety of plant species and vegetation types.Based on a large number of field investigations,this paper studied the flora,vegetation classification system and types of west Helan Mountains in Inner Mongolia,as well as the general situation of main vegetation types.The results revealed that there were 357 genera and 788 species of wild vascular plants in the study area.Vegetation types in the study area include forest,shrub,grassland,open forest,desert,meadow and aquatic and marsh vegetation.Finally,the spatial pattern of vegetation in the study area was studied from vertical differentiation,horizontal differentiation and slope differentiation respectively.