The grazing method in Qinghai-Tibet pastoral area is

Nomadic, that is, mobile animal husbandry, is the best way to obtain living materials and maintain the sustainable utilization of grassland through mobile grazing, so as to utilize aquatic resources in arid areas.

At the most basic level, it is an economic production mode for human beings to make use of the marginal environment where agricultural resources are scarce. Taking advantage of herbivores' feeding habits and excellent mobility, plant resources that cannot be directly digested and utilized by human beings in vast areas are transformed into food such as meat and milk and other daily needs. In poor mountainous areas, such as Qiang nationality areas in western Sichuan, it takes about 6- 10 mu of land to support such families. But at present, in Xinbaerhu Right Banner of Inner Mongolia, only one sheep can be raised on 20 mu of land, and at least 300-400 sheep can feed a family of five. Therefore, a herdsman family needs at least 6000-8000 mu of land. These figures can show that the unit land productivity of "nomadism" is far lower than that of agricultural production. Known nomadic areas in the first half of the 20th century-such as deserts and sparse grasslands in Arabian Peninsula, East Africa, North Africa and Central Africa, mountains in West and Central Asia, Eurasian grasslands, highlands such as Tibet, Pamir and Andes in southern China, forests and grasslands in Siberia and northeast China.