The West Kunlun Mountains are located in the northwestern part of the Qinghai-Xizang Plateau with complex topographic and climatic conditions, high peaks and deep valleys. All these make the spectra of vertical soil zones very complicated. The spectra can be divided into five categories: super-arid, arid, semiarid, frigid arid, frigid semiarid. In the semiarid spectrum on the Kunlun Muntain range, there is only spruce. In the arid and semiarid spectra in the southern part of the Tarim basin, there are widely distributed meadow grassland and grassland.Significant difference in spectra has been found between the marginal mountains and the interior mountains and between the low hills and the plateau surface above 5,000 meters