Before going to Lhasa, I will go to Xining, Dali, Lijiang, Linzhi and other cities with an altitude of 2000-3000 for a few days, and then come back to Lhasa in about three or four days. Buy oxygen bottles after coming up, pay attention to reducing the amount of exercise and exercise slowly. Qinghai-Tibet Plateau is the plateau with the latest uplift, the largest area and the highest altitude in the world, so it is called the roof of the world, and is regarded as the roof of the earth outside the Antarctic, the Arctic and the Qinghai-Tibet Plateau.
The overall terrain of the Qinghai-Tibet Plateau inclines from northwest to southeast, with complex and diverse landforms and numerous scenes, including steep and winding mountains, steep and deep ravines, glaciers, bare stones, Gobi and other landforms. There are all kinds of exotic flowers and rare wild animals in cold regions, temperate regions, subtropics and tropics, as well as natural wonders with four seasons in one mountain and ten miles in different days. Geomorphology can be roughly divided into Himalayan mountain area, southern Tibet valley, northern Tibet plateau and eastern Tibet alpine canyon area.
plateau climate
Due to the influence of topography, landforms and atmospheric circulation, the climate in Xizang Autonomous Region is unique, complex and diverse. Generally speaking, the climate in the northwest is cold and dry, and the climate in the southeast is warm and humid. So the climate types are tropical, subtropical, plateau temperate zone, plateau sub-frigid zone, plateau frigid zone and so on. In the alpine valleys of southeastern Tibet and the southern slope of the Himalayas, the temperature gradually drops due to the repeated uplift of the terrain.
With the increase of altitude and the decrease of air pressure and air density, the oxygen content per cubic meter of air gradually decreases, which is equivalent to 73% of sea level at an altitude of 3,000 meters, 62% ~ 65.4% at 4,000 meters, 59% at 5,000 meters and less than 52% above 6,000 meters.
Reference to the above content: Baidu Encyclopedia-Tibet