Photo shows a train running on a section of the Qinghai-Tibet Railway. (Photo: CNR.cn)
More than 95 percent of the Qinghai-Tibet Railway has been in good condition since it opened to traffic in July, 2006, according to China National Radio.
Furthermore, 98 percent of the 1，142-km section between Golmud in Qinghai Province and Tibet's capital of Lhasa has been in stable condition.
The Qinghai-Tibet Railway, the highest in the whole world, traverses the places with the harshest conditions.
To protect the environment along the railway, electrical energy, solar energy and other clean energies have been used widely.
All the wastewater and garbage on the trains are disposed of in designated sites so as to meet the zero-pollutant discharge target along the railway.
Photo shows several workers maintaining a section of the Qinghai-Tibet Railway. (Photo: CNR.cn)
Meanwhile, education in environmental protection has been carried out for the railway maintainers, who have been instructed not to disturb the migration of wild animals in their worktime.
No serious environment-damaging cases have ever been reported in the past three years.
Moreover, the operation of the railway has contributed a great deal to the development of Qinghai and Tibet. The railway transported 5.41 million passengers and 28.84 million tons of cargo in 2009. Source: Xinhuanet