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针对咸阳市泾河两岸黄土高原区地下水位快速变化的现象,依据咸阳市1986-2008年地下水监测资料和气象资料,运用灰色系统理论和统计方法对该区的地下水动态变化特征、未来变化趋势及与气候变化的关系进行了分析。结果发现:①该区地下水水位变化滞后于降水变化的周期为3个月,地下水位以不同速率持续下降,到2010年、2011年地下水位将比2008年分别下降0.4 m和0.59 m。②该区在1961-2007年间气候呈明显干旱化趋势,影响着地下水位的变化,且deMartonne气候干燥度每上升10个单位地下水埋深减少0.13 m,每下降10个单位地下水埋深增加0.3 m,结果显示该区地下水系统长期得不到补给恢复,应受到重视。
In view of the rapid change of groundwater table in the Loess Plateau along the Jinghe River in Xianyang City, based on the groundwater monitoring data and meteorological data from 1986 to 2008 in Xianyang City, this paper applies the gray system theory and statistical methods to analyze the dynamic characteristics of underground water changes, The relationship with climate change was analyzed. The results showed that: ①The period in which the groundwater level lags behind that of precipitation in this area is 3 months, and the groundwater level continues to decline at different rates. By 2010 and 2011, the groundwater table will drop 0.4m and 0.59m respectively compared with 2008. ② The climate in 1961-2007 showed a significant aridification trend, which affected the groundwater level change. The groundwater depth of deMartonne increased by 0.13 m for every 10 units increase, and the groundwater depth per 10 units decreased by 0.3 m The results show that the groundwater system in the area has not been recharged for a long time and should be paid attention to.