Using Hydrochemistry, Multi-Isotope, and MixSIAR Model to Analyze Nitrate Sources of Groundwater: A Case Study of the Yongning River Banks. - Yang, Zhaofei; Yang, Yuesuo; Wen, Yujuan; Gao, Cuiping; Zheng, Changhong; Teng, Xueyan; La, Yuhan (Hydrology (2306-5338), 2026)