准确获取地下水开采量对于区域地下水资源评价和管理工作具有十分重要的意义。但由于地下水开采活动过于分散，目前管理和计量的手段不足，导致地下水开采量统计数据存在较大误差。本研究通过建立华北平原地下水流区域数值模型，利用模拟水位与实际观测水位相拟合的方法，完成了华北平原开采量的反演估算，最终获得了华北平原2002～2008年各年的地下水开采量，其平均年开采量为249.20×108 m3。

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.

国家重点基础研究发展计划“973”项目（2010CB428804）。