Abstract:The Qinghai-Tibetan Plateau forms a key genetic resource for plant flora in China, while also providing an important base for localized animal production. From an ecological perspective, its current degraded state has caused much concern amongst researchers and many factors contribute to this, particularly the Qinghai-Tibetan Highway. In this research, an altitudinal transect was established along the Qinghai-Tibetan Highway from the Xidatan (94°10.016′E,35°43.063′N) to the southern Tanggulashan pass (33°07...