Traceability simulation of drainage in irrigation areas along the south bank of the Yellow River based on the SWAT model - Hexiang, Zheng; Yujing, Han; Rongxuan, Bao; Biyu, Wang; Jiabin, Wu; Delong, Tian; Haofang, Yan; Beibei, Hao (Frontiers in Environmental Science, 2025)