The Himalayas, which lie on the southern edge of the Qinghai-Tibet plateau, are located in China Tibet, Pakistan, India, Nepal, and Bhutan. The main parts are located on the border of China and Nepal. It starts from the Nanga Parbat Peak in the northwest of the Qinghai-Tibet plateau in the west and reaches Namcha Barwa Peak at the sharp bend of the Yarlung Tsangpo River in the east, with a total length of 2,400 kilometers and a width of 200 ~ 350 kilometers. The Himalayan mountain range is also the highest mountain range in the world.
The rolling peaks of the Himalayan mountains block the moist air from the Indian Ocean. Thus, the Southern slope(Nepal side) of the Himalayas has abundant rainfall and vegetation, while the Northern slope(Tibet side) has less rainfall and sparse vegetation, forming a striking contrast. With the increase of the mountain height, the natural scene of the alpine area also changes constantly, forming a distinct vertical natural zone. At the Northern slope, it’s plateau mountain climate with year-round snow, short sunshine time and cold. At the South slope, it’s a subtropical monsoon climate with warm and humid, long hours of sunshine, and adequate rainfall.