Although many studies have investigated the recharge and evolution of groundwater in the
Hexi Corridor, northwestern (NW) China, they describe individual sites such as Jinchang,
Jiuquan, Dunhuang, and others. Considering the similarity of these sites, a systematic
review of the entire Hexi Corridor is lacking. This paper compares and summarizes previous
studies in the Hexi Corridor to provide a regional perspective of the isotopic characteristics
and hydrochemical composition of groundwater. In unconfined aquifers, groundwater is …