中文摘要：

黑河干流中游地区内地下水和河水、泉水的转化以及综合利用具有西北干旱区的典型性.在一维明渠汇流和三维地下水流耦合数值模型的基础上,结合1995—2003年的黑河水位、流量和地下水头监测等数据对模型进行了识别,分析了正义峡站黑河水位和流量、地下水头变化和地表水和地下水综合利用状况,说明模型是可靠的.同时,利用GRACE重力卫星和GLDAS土壤含水量数据反演了2004—2012年地下水储量的变化,根据2004—2007年监测和模拟地下水头对比效果反推了研究区的地下水开采量,模拟发现地下水向黑河排泄水量、泉水溢出量和潜水蒸发量基本呈逐渐下降的趋势.其成果可为黑河干流中游地区水资源管理和综合利用提供服务.

英文摘要：

Interactions among groundwater,river and springs are typical in the middle branches of the Heihe River basin.The coupled 1-D open channel flow/3-D groundwater flow model was calibrated with data from 1995 2003.River stage and flux of the Heihe River,hydraulic head at observation wells were calibrated, simulated river stage,flux and hydraulic head at observation wells were compared with observed data.River stage and flux at the Zhengyixia Station,the change of hydraulic head,and surface water and groundwater use were also analyzed,indicating that the model was reliable.Changes in groundwater storage from 2004 2012 were obtained using GRACE and GLDAS data,and groundwater pumpage was inferred based on comparison between simulated and observed hydraulic head at observation wells from 2004 2007.Values of groundwater discharges to the Heihe River,springs,groundwater evaporation all decreased from 2004 2007.These findings would provide support for water resource management and conj unctive uses in the middle branches of the Heihe River basin.