“…In recent years, research regarding the water chemistry on the QT has focused on the major rivers and lakes and their catchments, including Yarlung Zangbo (Sarin and Krishnaswami, 1984;Wang, 2016), Senge Zangbo (Li et al, 2012;Wang et al, 2012), Three River Resource areas (Deng, 1988;Wu et al, 2008;Cao, 2013;Tan et al, 2016), Qinghai Lake (Hou et al, 2009;Jin et al, 2009;Xiao et al, 2012), Yamzhog Yumco Zhang et al, 2012;Sun et al, 2013;Zhe et al, 2017), Pumayum Co (Ju et al, 2010;Zhu et al, 2010), Nam Co (Gao et al, 2008;Wang et al, 2013), Mapam Yumco (Yao et al, 2015). Some scholars have also studied water chemistry in some areas of the QT (Zhang and Gustafsson, 1995;Guo and Wang, 2012;Tian et al, 2015), including microorganisms (Nie, 2011;Zhang et al, 2013;Zhao et al, 2017), heavy metals and trace elements (Cao et al, 2000;Grange et al, 2001;Li et al, 2006;Sheng et al, 2012;Tian et al, 2016).…”