The chemical weathering of continental rocks constitutes an important carbonsink for atmospheric CO2. However, Tibetan Plateau contributes to DIC of YellowRiver Basin, including not only the Yellow River source region (from the birthplaceto Dari) and the main water source area (from Dari to Lanzhou), but also the TaoRiver, Datong River and Huangshui. Based on the datas of summer, autumn in2013and winter, spring in2014of the mainstream and tributaries in the Yellow Riverupstream, we conclude that: about30%of...