Sanjiangyuan which literally translates as the “three river source area” feeds China’s mightiest rivers. The 300,000-square kilometer region, high on western China’s Qinghai-Tibetan plateau, provides a quarter of the Yangtze’s water, almost half of the Yellow River’s, and 10 percent of the Mekong’s.Crucial as this area is, its environment is deteriorating, with rising