中国帕米尔高原种子植物科的地理成分分析  

Analysis on Floristic Phytogeography of Family Seed Plants in the Pamirs of China

作　　者：杨淑萍[1] 阎平[2] 

机构地区：[1]石河子大学师范学院,新疆石河子832003 [2]石河子大学生命科学学院,新疆石河子832003

出　　处：《石河子大学学报（自然科学版）》2007年第5期581-584,共4页Journal of Shihezi University(Natural Science)

基　　金：国家自然科学基金(39960008;30360007);教育部高校骨干教师资助项目(200056)

摘　　要：中国帕米尔高原座落于新疆西南部,北纬37°~39°,东经73°~76°,面积约30000km2,区内平均海拔约4000m,有种子植物963种(包括变种),分属于59科303属,其中裸子植物3科3属12种,被子植物56科300属951种。种子植物科的区系特征为:1)单种及单属科所占比例极高,中小科分化强烈,区系组成复杂;2)禾本科、菊科、豆科、十字花科为本区优势科,且优势明显;3)植物区系具有明显的过渡性,且以北温带为主的温带成分占主导地位,有极其微弱的热带成分渗入。The Pamirs,a land about 30000km2 and about 4000m above sea level,is located in the southwest of Xinjiang,between 37°～39°N and 73°～76°E.There are 963 species of seed plants which are blong to 59 families and 303 genera in this area.Gymnosperm have 3 families 3 genera 12 species,Angiosperm have 56 families,300 genera,951 species.From the level of families,the floristic characteristics are summarized as follows:1)The ratioes of single-species and single-genera family are very high,the polarization of Middle or...

关 键 词：地理成分 种子植物 科 帕米尔高原 

分 类 号：Q948[生物学—植物学]