咸阳市地下水位动态变化特征

Dynastic Characteristic of Groundwater Level in Xianyang City

依据咸阳市1977～2006年地下水监测资料,对咸阳市不同地貌单元近30年来地下水位的年际和年内变化特点进行了系统分析,在研究时段内,咸阳市地下水平均水位变化分为持续上升阶段(1977～1987年)、持续下降阶段(1988～2001年)和急剧升降阶段(2002～2006年),降雨量、蒸发量、地下水开采量、灌溉等自然和人为因素的综合影响是导致地下水位发生变化的主要原因。提出了合理开发利用和保护地下水资源的建议,旨在为咸阳市地下水资源的可持续利用提供参考依据。

According to the materials of monitoring Xianyang city＇s groundwater from the year（1977～2006）,in this thesis the annual and monthly changes of groundwater level in Xianyang＇s different plates in recent 30 years were systematically analyzed.During the last 30 years the average groundwater level of Xianyang city can be divided into 3 periods：continuous rising period（1977～1987）;continuous descending period（1988～2001） and radical rising and descending period（2002～2006）.Influence from amount of rainfall,amount of evaporation,amount of pumping groundwater,and irrigating are the main factors leading to the changes of groundwater level.Therefore some suggestion on wisely use and protection of groundwater were put forward,so as to supply referential materials for continuous using of Xianyang＇s groundwater.