1　前言我国是世界上高原面积最大的国家 ,以内蒙古、黄土、云贵、青藏四大高原著称于世。特别是号称“世界屋脊”的青藏高原是世界上海拔最高、面积最大的高原 ,这里居住着以藏族为主的高原世居民族。新中国成立后 ,人民解放军进驻高原 ,大量平原地区的人进入青藏支援建设 ,关 1 Introduction China is the country with the largest plateau in the world. It is known to the four plateaus of Inner Mongolia, Loess, Yunnan-Guizhou and Qinghai-Tibet. In particular, the Qinghai-Tibet Plateau, known as the “Roof of the World,” is the highest altitude plateau in the world with a large population of native Tibetans. After the founding of new China, people’s Liberation Army stationed in the plateau, a large number of people in the plains into the Qinghai-Tibet support construction