Abstract: Hengduanshan is referred to the region situated in west Sichuan and north -west Yunnan, where mountains arrange from north to south. This region is of a special arranging pattern of mountains in China, and the bioclimate is also unique. In this paper, we are trying to take Jinsha Jiang (river) that near 28' 15′N as an exampl to explain the rules of division and distribution of the vertical vegetation zone in this region.

Key words: division, vertical, vegetation, Hengduanshan