摘要
对呼和浩特市域植物区系和植被调查分析确认:该市域内现有自然植物172种,隶属37科、123属,其中多年生草本植物占51.7%,一、二年生草本植物占44.2%,乔木、灌木和半灌木分别占0.58%、1.74%和1.74%.按水分生态类型分析中生植物属优势地位,占58.14%,旱生植物占37.8%,湿生植物占4.07%.区系地理成分组合中泛北极等草甸种位居第一,占47.1%,内亚草原种居第二位占24.4%,东亚森林草甸种占14.0%,世界广布种占9.3%.计有42种为建群植物,构成隶属于多年生旱生草原植被的2个群系、多年生中生草甸植被的15个群系,构成一、二年生中生草甸植被的25个群系.分析结果表明:呼和浩特市域自然分布的植物区系和群系的构成具有北方典型草原地带城市化过程的一般特征.
Through the investigation and analysis on the urban flora and urban vegetation in Hohhot of north China,it has found that there are 172 species belonging to 123 genus and 37 families of seed plant in the urban area.51.7% of these species is perennial herb,annual and biennial herb takes 44.2%,tree,shrub and half shrub takes separately 0.58%,1.74% and 1.74%.When analyzing according to the ecological type of the species,mesophyte is in advantage stage and takes 58.14% of the species,xeromorphic plant takes 37.8% and hydrophytes 4.07%.When analyzing from the geographical element of the flora,the meadow element of middle pan Arctic takes the number one and is 47.1%,Inner continent grassland element takes 24.4%,East Asian forest meadow element takes 14.0% and cosmoplitan 9.3%.There are 42 constructive species and they construct two vegetation formations belonging to the perennial xeric grassland vegetation type,15 formations belonging to the perennial mesophytic meadow vegetation type and 25 formations belonging to the annual and biennial mesophytic meadow vegetation type.The analyzing results reflect that the natural urban flora and vegetation in Hohhot have the general characteristics of the urbanization cities located in typical grassland area of north China.
出处
《内蒙古大学学报(自然科学版)》
CAS
CSCD
1999年第2期206-213,共8页
Journal of Inner Mongolia University:Natural Science Edition
基金
国家自然科学基金