巴音布鲁克大尤尔都斯盆地野生种子植物区系研究

基于野外实地调查,采集植物标本鉴定并结合相关文献资料整理,构建新疆巴音布鲁克大尤尔都斯盆地野生种子植物名录,在此基础上对该地区野生种子植物区系进行研究.结果表明:(1)巴音布鲁克大尤尔都斯盆地共有野生种子植物60科261属770种.(2)优势科有禾本科、菊科、豆科、石竹科、蔷薇科、十字花科、莎草科、毛茛科等11个科,表征科有豆科、龙胆科、石竹科、禾本科4个科.(3)区系地理成分以温带分布型为主,其中在科级水平上,温带分布型所属科共有30科,占到总科数(不含世界广布科)的88.24％；在属级水平上,温带性质分布型的属有220属,占总属数(不含世界广布属)的97.78％；同时该地区植物物种与地中海、中亚、西亚交流相对较多,而与东亚和热带交流很少.(1)本地区无中国特有属,但有中国特有种55个,其中新疆特有种32个.

Analysis on the Floristic Characteristics of Wild Seed Plants in the Big Youerdosi Basin of Bayanbulak

Based on the field investigation,some specimens and data of relative information,a catalog of wild seed plant,and the floristic of wild seed plant analyzed.The results show that:(1)There are 770 species in 261 genera and 60 families of wild seed plant in the Big Youerdosi Basin of Bayanbulak.(2)11 dominant families are Gramineae,Compositae,Leguminosae,Caryophyllaceae,Rosaceae,Brassicaceae,Cyperaceae,Ranunculaceae etc and Leguminosae,Gentianaceae,Caryophyllaceae,Gramineae are regarded as the typical families.(3)The temperate distribution occupies the overwhelming superiority.In a the Family level,temperate-type belongs to 30 families,accounting for the total number of subjects(excluding the world wide families) of 88.24%.In a grade level,the temperate distribution patterns of the 200 genera,is the total number of 97.78%.At the same time,some plant species are the most interflows between in this area and the Mediterranean,Central Asia,West Asia,little communication with East Asia and tropical.(4)There were no genera endemic to China in the area,although 55 species were China specific in the area,which 32 species endemic to Xinjiang in the area.