Photo shows a forest ranger counting the number of ancient trees in Tsarak Village of Chushur County, Lhasa of southwest China's Tibet Autonomous Region. [Photo/China Tibet News]

Photo shows the beautiful scenery of Dagdong Village, Lhasa of southwest China's Tibet Autonomous Region. [Photo/China Tibet News]

Lhasa, capital of southwest China's Tibet Autonomous Region, has made great efforts in environmental conservation in recent years.