File photo taken on June 7, 2016 shows a wolf confronting several Tibetan antelopes in Hoh Xil, northwest China's Qinghai Province. Located in the southern part of Qinghai Province, the Sanjiangyuan region, or the sources of three rivers, namely the Yangtze River, Yellow River, and Lancang (Mekong) River, is an important ecological security barrier in China. In recent years, Qinghai Province has been promoting the ecological protection project in the region, focusing on the restoration of vegetation and the construction of grassland, desert, wetland and river and lake ecosystems through the combination of natural restoration of ecosystems and ecological engineering construction. Now the vegetation productivity in the Sanjiangyuan region tends to be stable, and the number of wild animals is also obviously on the rise. (Xinhua/Wu Gang)
