人称“世界第三极”的西藏高原,属高寒大陆季风气候。通常又称“高原气候”。其气候独特,对人体健康会产生一定的影响,总的看来有如下几个方面: 一、含氧量少、沸点低 西藏高原平均海拔4000m以上,气压低,空气密度仅为海平面的60～70％。虽然空气清新,气体化合物和烟尘都很少,空气中的含氧比率高,但是由于密度小,每m~3空气中氧气只有 The Tibetan plateau, which is called “the third pole of the world”, is an alpine monsoon climate. Often called “plateau climate.” Its unique climate, will have some impact on human health, the total appears to have the following aspects: First, low oxygen content, low boiling point Tibet Plateau average elevation of more than 4000m, low pressure, the air density is only sea level 60 ~ 70%. Although fresh air, gas compounds and soot are very small, high oxygen content in the air, but because of the density of small, every m ~ 3 of oxygen in the air only