Temporal-spatial change of vertical groundwater recharge in representative zones of the North China Plain
Scarcity of water resources in the North China Plain has emphasized the need for studying the temporal-spatial change of groundwater recharge. This study analyzes the temporal-spatial change of vertical groundwater recharge by using the EARTH model. The study describes the process starting from rainfall to groundwater recharge in the unsaturated zone. Observed data of rainfall, evaporation, soil moisture and groundwater level are applied synthetically in the transient lumped parameter model (EARTH) to calculate the vertical recharge of groundwater in five representative zones of the North China Plain (Luancheng, Luquan,Cangzhou, Dezhou, and Hengshui), which represent Piedmont Plain, Middle Plain, and Coastal Plain respectively. The annual vertical groundwater recharges of Luquan, Luancheng, Cangzhou, Dezhou, and Hengshui are 249.3 mm/a, 182.6mm/a, 151.0mm/a, 176.5 mm/a, and 140.3 mm/a, which accounts for 21.2％, 19.9％, 15.7％,18.1％, and 16.4％ of the total of the precipitation and irrigation respectively. EARTH model simulation of the five representative zones shows that the infiltration recharge coefficient of Piedmont Plain is higher (20.55％ on average) than that of the Middle Plain and Coastal Plain (16.75％ on average).
X.Lu M.Jin B.F.Al Bassam
The Institute of Water Resources, China University of Geosciences, Wuhan Hubei, China
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
1333-1337
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）