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为了探讨不同海拔高度地区低氧环境对高原筑路民工劳动能力的影响，本研究以工地筑路民工为对象，分别在海拔２２６０ｍ、３６００ｍ及５０００ｍ地区筑路工段设立实验组，并以海平地区作对照，观察环境不同程庆低氧对ＰＷＣ＿（１７０）的影响，结果表明海拔２２６０ｍ、３６００ｍ地区，ＰＷＣ＿（１７０）功率（Ｗｐｗｃ＿（１７０））与海平比较变化不明显（Ｐ＞０．０５），海拔５０００ｍ地区Ｗｐｗｃ＿（１７０）下降１８．６％，与海平比较差异显著（Ｐ＜０．０１），从而认为海拔高度对人体劳动能力有不同程度的影响，海拔５０００ｍ以上人的劳动能力明显下降，对此在劳动卫生方面应予特别注意。
In order to explore the impact of hypoxic environment on the working ability of migrant workers in plateau in different altitudes, this study took the migrant workers in site as object, and set up experimental groups in the road construction section with elevation of 2260m, 3600m and 5000m respectively. The results showed that PWC_ (170) power (Wpwc_ (170)) did not change significantly from sea level at 2260m and 3600m altitude (P> 0.05) Wpwc_ (170) dropped 18.6% at an altitude of 5000m, which was significantly different from the sea level (P <0.01). Therefore, the elevation of altitude affected the human labor ability to varying degrees. The working ability of people above 5000m decreased obviously, In this regard, special attention should be paid to labor hygiene.