title: Characteristics of groundwater recharge on the North China Plain.
abstract: Groundwater recharge is an important component of the groundwater system. On the North China Plain (NCP), groundwater is the main water supply. Because of large-scale overexploitation, the water table has declined, which has produced severe adverse effects on the environment and ecosystem. In this article, tracer experiment and watershed model were used to calculate and analyze NCP groundwater recharge. In the tracer experiment, average recharge was 108 mm/year and recharge coefficient 0.16. With its improved irrigation, vegetation coverage and evapotranspiration modules, the INFIL3.0 model was used for calculation of groundwater recharge. Regional modeling results showed an average recharge of 102 mm/year and recharge coefficient 0.14, for 2001-2009. These values are very similar to those from the field tracer experiment. Influences in the two methods were analyzed. The results can provide an important reference for NCP groundwater recharge.
authors.affiliation: State Key Laboratory of Water Resources and Hydropower Engineering Sciences, Wuhan University, Wuhan 430072, China; College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Taian 271018, China.
authors.forename: Xiu-Cui
authors.initials: XC
authors.lastname: Tan
authors.forename: Jing-Wei
authors.initials: JW
authors.lastname: Wu
authors.forename: Shu-Ying
authors.initials: SY
authors.lastname: Cai
authors.forename: Jin-Zhong
authors.initials: JZ
authors.lastname: Yang
mesh_terms: D002681:China; D004784:Environmental Monitoring; D060587:Groundwater / Q000032:analysis*; D008962:Models, Theoretical; D014872:Water Movements; D014881:Water Supply / Q000032:analysis*