Wildlife conservation is all down to humans, professor says

Analysis of millions of infrared photos and tens of thousands of videos shows that the Sanjiangyuan area in the heart of the Qinghai-Tibet Plateau has one of the most complete food chains in the world.

The analysis was carried out by the Shan Shui Conservation Centre over more than a decade.

Lyu Zhi, 57, a professor of conservation biology at Peking University, who founded the center in 2007 and has worked on the preservation of Sanjiangyuan for 17 years, said: "Conservation of nature is not about shouting slogans related to keeping rare animals alive. It is not something you can learn from textbooks.