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中文摘要：
受气候和人类大规模开发利用地下水影响,干旱区地下水动态规律复杂。在地下水流数值模型的基础上,对黑河干流中游地区地下水、河流和泉水转化关系进行了近500年的模拟分析,得出当增加的人工开采量最终等于排泄量的减少量时地下水系统达到稳定,但需要近百年的时间,现行地下水开采方案最终结果没有引起地下水向黑河的排泄量的干涸。发现黑河干流中游地区地下水系统稳定受气候和人类活动影响很大,其动态非常复杂。模拟结果可为分析干旱区地下水动态提供依据和参考。
英文摘要：
Under the combined influences of climate change and large-scale groundwater exploriation, groundwater regime is very complex. Based on existed groundwater flow model, the paper simulated the relations among groundwater, rivers and springs at the middle branches of the Heihe River basin in fiver handred years, and concluded that groundwater flow system approach the steady state when added groundwater withdrawls equal to the decreased discharges, and the consumed time is almost five-hundred years. There did exist groundwater discharge to the Heihe River after five hunded years under the current ground water exploiration mode. It was found that the steady state of groundwater system depends mostly on the climate change and human activities. The results can provide the suggestions and references for understanding groundwater regimes in arid regions.
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