植物研究2005，Vol.25Issue(1)：106-114,9.
喀喇昆仑山和昆仑山地区禾本科植物区系
The floristic of the family Gramineae of Karakorum and Kunlun area, China
摘要
Abstract
There are 47 genera and 161 species of Gramineae except the cultivated species in the area of the Karakorum and Kunlun Mountains. The results of research on the distribution of the genera and species of Gramineae in the Karakorum and Kunlun Mountains show that (1) The Gramineae mainly contains elements of North Temperate, rich Old Word Temperate and other Temperate. It is obvious that the floristic nature of Gramineae in the Karakorum and Kunlun Mountains is the North Temperate; (2) All Pantropic genera can stretch to the Temperate Zone in this region, which all parts of the Pantropic type are the Temperate nature to a certain degree. For example, Erianthus ravennae from mediterranean to the Karakorum and Kunlun Mountains through the Central Asia; (3) As most genera of Grasses are the type of Temperate and the Frigid Zone, they have distinct floristic characteristics of mountainous and plateau flora such as Orinus, Alopecurus, Elymus, Trisetum, Littledalea, Elytrigia, Stephanachne and Paracolpodium etc. All of these indicate adaptive phenomenon of alpine specialization and cold-xerophilization on Grasses in this area; (4) Endemic genus of Gramineae is absent due to its nature and history and the endemic species are also rare in the Karakorum and Kunlun Mountains. Most of the genera with one or fewer species have originated from its relative and widespread genera, such as Ptilagrostis from Stipa, Timouria from Achnatherum, and so on; (5) Flora of the Karakorum and Kunlun Mountains is most closely related to the flora of Tibet, and is also extensively to its adjacent areas.关键词
喀喇昆仑山和昆仑山/禾本科/区系特征Key words
Karakorum and Kunlun Mt./family Gramineae/floristic characteristics分类
农业科技引用本文复制引用
吴玉虎..喀喇昆仑山和昆仑山地区禾本科植物区系[J].植物研究,2005,25(1):106-114,9.基金项目
国家自然科学基金和中国科学院项目(9487003) （9487003）
