西藏高原的大部分地区,位于北纬27°到36°之间,平均海拔在4000米以上。喜玛拉雅山、岗底斯山、唐古拉山和横断山脉,构成了高原的骨架;拉萨河、尼洋河和雅鲁藏布江、金沙江、澜沧江和怒江,把高原切割成藏北草原、藏南谷地和藏东南的深山峡谷三大部分。在喜玛拉雅山和唐古拉山东南部的崇山峻岭中,在横断山脉的深山峡谷之 Most parts of the Tibetan Plateau are located between latitudes 27 ° and 36 ° north with an average altitude of more than 4,000 meters. The Himalayas, Gangtiashan, Tanggula and Hengduan Mountains constitute the skeleton of the plateau; the Lhasa, Niyang and Brahmaputra, Jinsha, Lancang and Nu rivers cut the plateau into the northern Tibetan grassland and the southern Tibet Tibet southeastern mountain valley three parts. In the himalayas and southeastern Tanggula mountains, in the mountain range of the mountain canyon