Source Analysis and Migration Mechanisms of Nitrate during Thaw Period in Seasonal Freezing-Thawing Agricultural Regions Based on Nitrogen and Oxygen Isotopes

ZHAO Qiang, CHANG Dan, PENG Zhen-yang, ZHANG Chi, LIN Zi-yuan, TIAN Qing-lu, WU Jing-wei

China Rural Water and Hydropower . 2026, (5): 23 -29 . DOI: 10.12396/znsd.2500945