摘要:The pollutant source identification problem has become a hot topic in groundwater. To identify the groundwater source item, an effective hybrid method was designed to reconstruct one dimensional pollutant source with some final observation datum. First of all, a stable implicit difference equation was determined by finite difference method. Secondly, the hybrid method was deduced in detail. Lastly, two different examples were carried out to verify the proposed method. Numerical results demonstrated that, the proposed method was practical and effective to reconstruct the pollutant source in groundwater.