摘要
内蒙古共有木本植物４８３种（包括种下分类单位，野生种４１８种，栽培种６５种），隶属于５２科，１３９属。其中乔木１３２种，灌木及半灌木和小半灌木３５１种。这些植物中，裸子植物３科７属３１种，被子植物４９科１３２属４５２种，在被子植物中双子叶植物４８科１３１属４５１种，单子叶植物１科１属１种。本文对４１８种野生木本植物进行了区系统计和分析。结果表明，该区系属于温带性质，地理联系广泛，水平替代现象明显，特有性程度较低。在种类组成中包含有少量的热带性质成分和一些寒带亚寒带性质成分，而主要的则是以温带性质的东亚种为主体，渗入了相当数量的其他温带成分所组成。
There are about 483 species of the ligneous plants in Inner Mongolia, in which arbores 132 species, frutices and suffrutices are 351 species, they belong to 52 families and 139 genera; 31 species of Gymnosperm belong to 3 families and 7 genera, 452 species of Angiosperm belong to 49 families and 132 genera; 451 species of Dicotyledon belong to 48 families and 131 genera; and Asparagus gobicus is the only Monocotyledon. This paper deals with the floristic statistics, analysis of the 418 species on wild ligneous plants. The main conclusions are as follows: The flora is naturally temperate. It has wide connection in geographical relationships with obvious horizontal vicariance. It has a lower level of endemic. The flora is composed of temperate, frigid and subfrigid and tropical elements. The principal part is the temperate elements which include many East Asia temperate and other temperate elements.
基金
内蒙古自治区教委资助
