The Tibetan wild ass, or Kiang, (Equus kiang) on the rangelands of Suojia township in remote Zhiduo county of Yushu prefecture. The Kiang is the largest species of ass in the world and has a growing population thanks to conservation measures and a banning of weapons. The ban has had negative effects for families who cannot defend their property from bears.Sanjiangyuan - The three rivers headwaters. The Tibetan plateau is the world's third pole, producing fresh water for billions downstream. In China, the future of the nation depends on how this water tower is conserved. Where the Yangtze, Yellow and Mekong rivers begin, Tibetan nomads are moving to protect the land, its wildlife and in the process their ancient culture from melting away in the face of resettlement and urbanisation..