中国帕米尔高原种子植物区系的特征

中国帕米尔高原约有种子植物963种（包括变种）,隶属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。在区系科属分级水平上,寡种科、单种科占绝对优势,超过50种的大科仅有4科,分别占总属数、总种数的40.26%和46.21%,区系优势现象十分明显;单种或少种属也较多,属种比值偏高,表明区系组成上的复杂性。在区系地理成分中则是以温带成分为主的北温带成分占主导地位,其次是旧世界温带分布成分和地中海、西亚至中亚成分,而热带成分十分微弱。

Floristic Elements of Seed Plants in the Pamirs Region of China

Approximately 963 seed plant species, classified into 59 families and 303 genera, are in the Pamirs region of China. Gymnosperm have 3 families,3 genera and 12 species and dominant Angiosperm have 56 families,300 genera and 951 species. One-species and Minor-species of family are predominantly. There are 4 families with more than 50 species .The ratios of gerera and species to pamirs region are about 40.26% and 46.21% in 4 families, so phenomenon of the flora is obviously. Single-species or species-poor genera are more, so composition of the flora is complex. Based on the analysis of genera, the temperate composition, mainly including north temperate, is dominant; Old World Temperate, Mediterranean, Western Asia and Middle Asia Composition are very important; tropical composition occopies only a small percentage.