Estimation of Groundwater Withdrawal in the North China Plain
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Abstract:
Accurate estimation of groundwater withdrawal is meaningful for the assessment and management of regional groundwater resources. However, due to the dispersive groundwater pumping and inadequate means in the current management and statistic methods, errors exist in the statistical data of groundwater withdrawal. In this study, a numerical model of regional groundwater flow in the North China Plain was developed, and the inversion estimation of groundwater withdrawal was performed through the fitting between the simulated and measured water levels. Finally, the groundwater withdrawals data from 2002 to 2008 were obtained and the average annual groundwater withdrawal in the NCP was 249.20×108 m3.
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