广西植物2012，Vol.32Issue(2)：157-162,6.DOI:10.3969/j.issn.1000-3142.2012.02.004
中国喀喇昆仑山离瓣花类植物区系特征
Floristic characteristics of Archichlamydeae plant in Karakorum of China
摘要
Abstract
The floristic characteristics of Archichlamydeae were studied. The results revealed that more than 24 families, 114 genera,310 species and 11 variaties of Archichlamydeae were recorded in Karakorum mountains of China. There were 2 families Leguminosae(66 species)and Brassicaceae(63 species)that were more than 60 species,and 3 families in cluding 20 - 39 species,4 families including 10 -19 species. The propotion of 9 families were 78. 95% of total genera and 88.39% of total species in this area. The monotypic genera and oligotypic genera(103 species) accounted for dominant position in the floristic geographical elements of genera. But on the level of species, the little species genera and more species genera(245 species) accounted for dominant position in the floristic geographical elements of species. The analysis on the geographical elements of the 114 genera and 310 species of Archichlamydeae showed that there were 8 normal types and 14 aberrations of plant distribution in the area,most of which were temperate genera,including 67 genera and 194 species, 66. 34% and 79. 18% of total plant genera species in the area. This indicated the temperate zone property was the basic characteristic of the flora in the area without tropic distribution and the Chinese unique distribution. Mean while,most interflows between the flora in this area with that in the Mediterranean,Western Asian and Central Asian, and few ones with Eastern Asian flora had been found,but without tropic distribution and the Chinese unique distribu tion. Compared with the peripheral regions,the similarity coefficient of the Pamirs of China and Karakorum Mountain of China was the highest,respectively were 82. 14% of total families,63. 69% of total genera and 33. 86% of total species. The similarity coefficient of the East Afghanistan, Himalayan and the Qinghai-Tibeta to Karakorum Mountain of China respectively were 17. 92% ,15. 36% and 16. 26% of total genera. But on the level of species the similarity coefficient was lower,and respectively were 1. 76% to 5. 69% of total species.关键词
区系特征/离瓣花/中国喀喇昆仑山Key words
floristic characteristics/ Archichlamydeae/ Karakorum Mountain of China分类
农业科技引用本文复制引用
张燕君,徐文斌,马真,贺晓欢,阎平..中国喀喇昆仑山离瓣花类植物区系特征[J].广西植物,2012,32(2):157-162,6.基金项目
国家自然科学基金(30760018,30360007) （30760018,30360007）
