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中文摘要：
为探讨湿润地区土壤质地和地下水对区域水量平衡的影响,以淮河中上游地区为研究对象,基于Budyko假设在获得研究区长系列水文气象和土壤质地资料后,通过研究不同土壤质地下的水量平衡关系,分析了土壤质地对水量平衡的影响.并在计算出基流指数的基础上,研究了地下水对流域水量平衡的影响.结果表明：基于Budyko假设的水热耦合平衡关系在淮河流域是成立的,证实了湿润地区土壤质地差异和地下水同样对区域水量平衡有较大影响.
英文摘要：
For studying the influences of soil texture and groundwater on watershed water balance process in the moisture area, after obtaining the long- term hydrologic and soil data in upstream Huaihe River, on the basis of Budyko hypothesis, we present an analysis on the water balance affected by different soil textures in the research area. In addition, impact of groundwater on re- gional water balance is also analyzed after different base flow index being calculated. The analysis results show that based on Budyko hypothesis, the coupled water - energy balance relationship of Huaihe River Basin is reliable ; meanwhile, differences of soil texture and groundwater have large impact on regional water balance.
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