下辽河平原地下水多年动态变化特征分析

ANALYSIS ON THE MULTI-YEAR VARIATIONS OF GROUNDWATER IN LOWER LIAOHE PLAIN

地下水水位动态变化，实际上是含水层中地下水资源量变化的一种反映，地下水水位的升降，直接反映了地下水补给与消耗量的变化．依据多年地下水水位监测数据，总结分析了下辽河平原1996～2005年间孔隙潜水的变化特征及趋势．揭示了孔隙潜水或孔隙承压水在多年升降变化过程中水位动态主要随降水量的变化而变化．此外，地下水开采规模、局部开采布局的调整等措施，也是影响其变化特征的主要因素．

The dynamic variation of groundwater level is actually a reflection of the change of groundwater resources in aquifer. The fluctuation of groundwater level directly reflects the variation in amounts of consumption and recharge of groundwater. Based on the monitoring data of groundwater level, the variation characters of phreatic water in Lower Liaohe Plain from 1996 to 2005 are analyzed. It is concluded that whether phreatic water or confined water, the groundwater levels change along with precipitation in non-exploitation area and dry farmland area. Besides the contribution of precipitation, the exploitation scale and layout of groundwater in exploitation area are also significant influential factors for the variation characters of groundwater level.