中国帕米尔高原菊科植物区系分析

菊科是中国帕米尔高原第一大科,共有36属139种及1亚种5变种,植物生活型以地面芽植物为主,高达85.6%;中国帕米尔高原菊科植物区系地理成分多样,有8个分布类型和6个变型,温带性质明显,以北温带为主,缺乏热带分布型和中国特有分布型;与其它植物区系相比,西帕米尔与中国帕米尔的相似系数最高;该区菊科植物特有现象不明显.

Analysis on the Flora of Compositae in the Pamirs, China

Compositae is the first dominant family in the Pamirs,China,it includes 139 species,1 subspecies and 5 varieties in 36 genera,and the genera and species of Compositae in the Pamirs occupy 33% of the total genera and 26.2% of the total species in Xinjiang respectively,in which there are 126 herbaceous species and occupy 90.6% of the total.Moreover,there are 119 species of hemicryptophyte,their proportion is as high as 85.6%,7 species of therophyte(occupy 5% of the total),and 13 species of chamaephyte.The flora elements of Compositae in the Pamirs,China,are diversiform,their geographical distribution can be classified into 8 types and 6 subtypes,and the temperate elements,especially the north-temperate elements,are dominant in the floristic composition.Comparedwith the peripheral regions,the similarity coefficient of the west Pamirs and the Pamirs of China is the highest,and the endemic appearance of Compositae in the Pamirs is not so significant.