内蒙古阿鲁科尔沁国家级自然保护区种子植物区系研究

The flora of seed plants in Arhorchin National Nature Reserve in Inner Mongolia

内蒙古阿鲁科尔沁自然保护区有种子植物63科、215属、358种(含种下等级)。其中裸子植物1科1属1种,被子植物62科214属357种。植物生活型多样,多年生草本占优势(56.70%),一、二年生草本也占一定比例(27.93%),其余为木本植物。水分生态型以中生植物为主,占56.71%,旱生植物其次,占31.28%,由于生境的多样化,也有一些湿生和水生植物分布。地理成分比较复杂,东亚成分优势明显,蒙古成分也较多,反映出与周边地区的联系,温带亚洲、北温带、旧大陆温带成分均占有较高的比例,表现温带性质。

There are 358 species of seed plants which belonges to 215 genera and 63 families and distributes in the Arhorchin National Nature Reserve.Among them there are only one family,one genus and one species in Gymnospermae,and 62 families 214 genera 357species in Angiospermae.Life forms of plant are diverse.The perennial herbs are dominant and annual-biennial herb are secondary,their proportion are 56.70% and 27.93% respectively.The mesophyte is main water ecological types,the proportions is 56.71%,and the proportions of xerophyte is 31.28%.Hygrophyte and hydrophyte exist simultaneously due to the habitat diversity.The floristic geographic elements are complex.Dominant East Asia distribution and more Mongolia type are closely related to the around region.High proportion of Asia Temperate Zone,Northern Temperate Zone and Old Continent Temperate Zone types reflect obvious temperate zone characteristics.