Fate and retention mechanisms of nitrate across the vadose–saturated continuum in a typical agricultural irrigation area of the North China Plain: evidence from hydrogeochemistry and microbiome analyses

Gongyu Zhou, Kehan Yuan, Chengyi Zu, Ruihua Shang, Xiaoyang Liu, Liuzhu Chen, Lili Liang, Teng Ma

China University of Geosciences　Wuhan University of Science and Technology