Study on the valuation of livestock production in the Tibetan Plateau

I.Introduction
Three villages were selected to do the field research in Tibet Autonomous Region： Khorchak village and Shide Village in Purang Town, Purang County, and Kungyal Village in Hor County. Close to India and IO km from Nepal, the first two villages, Khorchak and Shide, are situated I8 kilometers from Purang County, along the downstream of Peacock River, one of the four major rivers in All. With average altitude of 3850 meters in plateau subfrigid arid climate, these two beautiful villages fall into the category of farming- pastoral area and their productive structure is settled/grazing, herding sheep, goat, cow and etc. Kungyal Village, II5 kilometers to the east of Purang County government, altitude 4670, plateau subfrigid arid climate, is a typical pastoral area and its productive structure is nomad or seasonal nomad, herding yak, sheep goat and etc. These three villages were chosen due to their representative features.