1. Ahmad T, Khanna P P, Chakrapani G J et al., 1998. Geochemical characteristics of water and sediment of the Indus river, Trans-Himalaya, India: Constraints on weathering and erosion. Journal of Asian Earth Sciences, 16(2/3): 333–346.
2. Cao D, 2013. Yangtze River source area water environment and hydrochemistry background characteristic [D]. Beijing: Engineering China University of Geosciences (Beijing). (in Chinese)
3. Cao J, Zhao Y, Liu J et al., 2000. Fluoride concentrations of water sources in Tibet. Fluoride, 33(4): 205–209.
4. Chang H, Xu W, Yuan J et al., 2012. Current situation of grassland resources and grazing capacity in Ali, Tibet. Pratacultural Science, 29(11): 1660–1664. (in Chinese)
5. Chen J, Wang F, Xia X et al., 2002. Major element chemistry of the Changjiang (Yangtze River). Chemical Geology, 187(3/4): 231–255.