图2 昆仑针茅草原物种的区系地理成分分布。1, 青藏高原成分; 2, 青藏高原特有成分; 3, 亚洲中部成分; 4, 东古北极成分; 5, 中亚-亚洲中部成分; 6, 喜马拉雅成分; 7, 西藏-喜马拉雅成分; 8, 亚洲中部山地成分; 9, 泛北极成分; 10, 古北极成分; 11, 古地中海成分; 12, 中国-喜马拉雅成分; 13, 中亚-亚洲中部山地成分; 14, 北极-高山成分; 15, 亚洲中部高山成分; 16, 中亚-喜马拉雅成分; 17, 中亚-亚洲中部高山成分; 18, 中亚-青藏高原特有成分。
Fig. 2 Floristic geographic distribution of the species in Stipa roborowskyi steppe. 1, Qingzang Plateau element; 2, Qingzang Plateau endemic element; 3, Middle Asia element; 4, East palaeo-North pole element; 5, Central Asia-Middle Asia element; 6, Himalayan element; 7, Xizang-Himalayan element; 8, Middle Asia montane element; 9, Pan-North pole element; 10, Palaeo-North pole element; 11, Palaeo-Mediterranean element; 12, China-Himalayan element; 13, Central Asia-Middle Asia montane element; 14, Arctic-Alpine element; 15, Middle Asia alpine element; 16, Central Asia-Himalayan element; 17, Central Asia-Middle Asia alpine element; 18, Central Asia-Qingzang Plateau endemic element.
图2 昆仑针茅草原物种的区系地理成分分布。1, 青藏高原成分; 2, 青藏高原特有成分; 3, 亚洲中部成分; 4, 东古北极成分; 5, 中亚-亚洲中部成分; 6, 喜马拉雅成分; 7, 西藏-喜马拉雅成分; 8, 亚洲中部山地成分; 9, 泛北极成分; 10, 古北极成分; 11, 古地中海成分; 12, 中国-喜马拉雅成分; 13, 中亚-亚洲中部山地成分; 14, 北极-高山成分; 15, 亚洲中部高山成分; 16, 中亚-喜马拉雅成分; 17, 中亚-亚洲中部高山成分; 18, 中亚-青藏高原特有成分。
Fig. 2 Floristic geographic distribution of the species in Stipa roborowskyi steppe. 1, Qingzang Plateau element; 2, Qingzang Plateau endemic element; 3, Middle Asia element; 4, East palaeo-North pole element; 5, Central Asia-Middle Asia element; 6, Himalayan element; 7, Xizang-Himalayan element; 8, Middle Asia montane element; 9, Pan-North pole element; 10, Palaeo-North pole element; 11, Palaeo-Mediterranean element; 12, China-Himalayan element; 13, Central Asia-Middle Asia montane element; 14, Arctic-Alpine element; 15, Middle Asia alpine element; 16, Central Asia-Himalayan element; 17, Central Asia-Middle Asia alpine element; 18, Central Asia-Qingzang Plateau endemic element.