The positive effect of clayey layer on groundwater resources in the North China Plain
Xiaomin Sun1, Jin Lin1, Jianfeng Wu2, Yunfeng Dai1, Jiangbo Han3 and Peng Liu4, (1)Nanjing Hydraulic Research Institute, Nanjing, China, (2)Nanjing University, School of Earth Sciences and Engineering, Nanjing, China, (3)Nanjing hydraulic research institute, Nanjing, China, (4)Nanjing hydraulic research institute, Hydrology and Water Resources Department, Nanjing, China
