The Ministry of Environmental Protection said on October 16 that the Qinghai-Tibet Railway has passed its environmental impact assessment.

The ministry launched the assessment of the world's highest rail system in early October and announced the results to be "satisfying."

The wildlife paths, protection of vegetation, frozen earth, marsh and scenery, as well as anti-pollution measures have met expectations, and realized the harmony of projects and the environment, according to the ministry.

Environmental supervision started before construction of the 1,956-km railway and continued after its first operation on July 1, 2006.