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青藏高原多年冻土区是世界上中、低纬度地带海拔最高、分布最广、厚度最大的冻土区，约140多万km‘，占我国多年冻土总面积的60％以上。约占我国领土面积的14．6％。青藏公路始于青海省省会西宁市，经格尔木市、那曲镇至西藏自治区首府拉萨市，全长1937kpe是国家规划的“五纵七
The permafrost region on the Qinghai-Tibet Plateau is the highest altitude, the most widely distributed and the largest in the world in the middle and low latitudes, covering about 1.4 million km2, accounting for more than 60% of the total area of permafrost in China. Accounting for 14.6% of our territorial area. Qinghai-Tibet Highway began in Xining City, the capital of Qinghai Province, via Golmud City and Nagqu Town to Lhasa, the capital of the Tibet Autonomous Region. The 1937kpe is a national five-longitudinal-