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西藏地区风景优美,每年吸引着大批游客前来观光游览。但由于其特殊的地理环境和自然条件,进藏前了解一些保健知识是十分必要的。 青藏高原的特点 气压低,空气稀,含氧少。一般海拔每升高100米,大气压下降5.9mmHg。因此,地势越高,空气越稀薄,氧含量也就越少。拉萨地区海拔3658米,大气压480.5mmHg,氧分压为100.71mmHg,这就是高原缺氧的根源。 辐射强,日照低。由于高原空气层薄,
The scenic area of Tibet attracts a large number of tourists each year for sightseeing. However, due to its special geographical environment and natural conditions, it is very necessary to understand some health knowledge before entering Tibet. Qinghai-Tibet Plateau characteristics of low pressure, thin air, less oxygen. The general elevation of 100 meters for every increase in atmospheric pressure dropped 5.9mmHg. Therefore, the higher the terrain, the thinner the air, the less oxygen. Lhasa 3658 meters above sea level, the atmospheric pressure 480.5mmHg, partial pressure of oxygen is 100.71mmHg, which is the root cause of high altitude hypoxia. Strong radiation, low sunshine. Due to the thin layer of air in the plateau,