安徽淮北平原地下水动态变化研究

论文对安徽淮北地区69个地下水位站的1980-2006年平均地下水埋深资料进行分析，得出淮北地区多年平均地下水埋深2.33m，1980-1990年各地下水年均埋深较浅、变幅较小，1990年以后地下水埋深变幅加大，且埋深有明显的加深趋势。研究认为淮北平原地下水动态虽然受降水量、蒸发量和人类活动等多种因素影响，但近些年来地下水的动态变化主要是人类活动影响的结果。这些人类活动包括地下水资源开发利用、土地利用、水利工程、农业节水灌溉措施等。其中过度开发利用地下水是导致安徽淮北平原地下水埋深下降，地下水资源减少的主要原因。适度开发利用地下水有利于淮北地区地下水的循环更新，但过度的开发利用，已造成平原北部开始出现严重的环境地质问题，应限制开采。

Study on the Groundwater Dynamic of the Huaibei Alluvial Plain in Anhui Province

Huaibei alluvial plain lies in the middle reach of the Huaihe River basin and the main part of the plain is in Anhui Province. In this region, human activities are intense and water pollution is still serious, so people have to use much groundwater. This article analyzed the annual mean groundwater burying depth from 1980 to 2006 from 69 water table stations on Huaibei alluvial plain, Anhui Province. The authors concluded that multi-annual mean groundwater burying depth is 2.33 m in this region. The annual mean groundwater burying depth was shallow and changed little during the 1980s, but it changed greatly and was apparently deeper after 1990. Although groundwater dynamic is affected by precipitation, evaporation and human activities, the change was the result of human activities in recent years in Huaibei alluvial plain. These activities include groundwater exploitation, land use, hydraulic engineering and agriculture water-saving irrigation measure, and groundwater overexploitation was the main reason for water table decline and groundwater resource decrease. Moderate use of groundwater is advantageous to groundwater circulation and renewal in Huaibei region, but overexploitation of groundwater has caused serious environmental geologic problem in the northern part of the plain. Groundwater use should be limited in this area.