吉林中部平原区地下水动态变化特征和地下水超采状况的判定

以长春、四平市为中心的吉林中部平原区是吉林省经济最发达的地区和全国商品粮基地。由于城市、工农业用水量很大，水资源供需矛盾突出。正确认识该区的地下水资源的开采现状，对正确制定未来的用水规划有着很重要的意义。本文通过对该区百余眼地下水动态观测井近10多年地下水位动态的系统分析，提出了在无明显区域水位降落漏斗的情况下，如何判别地下水超采的方法，为正确制定未来供水规划提供了科学依据。

Analysis of Dynamic Variation of Groundwater Level and Over-Draft in the Plain Area of Central Jilin

The plain in the central Jilin with Changchun and Siping as the center is not only a most developed area in the province, but also a base of producing commodity grain in China. Because of the vast quantity of water usage in city life, industry and agriculture, the conflict between water supply and demand have become more and more prominent. Therefore, understanding exactly the actual situation of groundwater exploitation in this area is crucial to plan the water use in the future. Based on ground water level data of more than one hundred observation wells in recent 10 years, this paper systemically analyses the perennial change laws of water table in the area. Furthermore, the paper puts forward a method to judge whether groundwater in the area is over-draft in the case of no groundwater level depression, and offers some scientific advices on planning water use in the future.