ABSTRACT

There are many glaciers with snow throughout the year, whose area is about 49,000 square kilometers. Meanwhile, Qinghai-Tibet Plateau is the birthplace of many rivers, and there are a lot of lakes on it with area of 30,000 square kilometers, moisture storage capacity of 546,000,000,000 cubic meters which accounted for 73% of the whole country. So Qinghai-Tibet Plateau has the praise of “Chinese water tower”.[1] Qinghai-Tibetan Plateau is not suitable for the cultivation of cereals, but suitable for pasture because of lower temperature and shortage of heat. Here is the grassland stretch as far as eye can see, and the area is 2,100,000,000 acres, which accounted for 60% of the whole plateau. Grassland was divided into many types, including alpine meadow, Plateau Lake and basin meadow, plateau gully meadow, upland meadow, plateau gully desert grassland, mountain desert grassland, mountain shrubby grassland, marsh grassland and so on.