中文摘要：

中国西北干旱区石羊河流域因水资源紧缺,一些地区大量开 采地下水,造成地下水位大幅度下降。了解该区域的地下水埋深时空变异规律对于科学管理水资源和实施生态保护具有十分重要的意义。依据该区域1981-2003年的地下水埋深观测数据,基于GIS中的Arcview3.3软件,选用反距离加权平均空间插值方法对石羊河流域地下水埋深的空间分布进行了内插。分析了20余年来该地区地下水位的动态变化过程,并探讨了地下水位时空演变的原因及这种变化给生态环境及生活带来的影响,提出了相应的建议和对策。

英文摘要：

The Shiyang River basin is located in arid area of northwest China. The groundwater level of this region has been dropping drastically due to excessively exploiting of groundwater resources. The spatial and temporal variations of groundwater level play a significant role in water resource management and ecological protection. In this paper, the groundwater mineralization from 1981 to 2003 in the Shiyang river basin was interpolated using inverse distance weighting （IDW） method. Moreover, the reasons causing variations of groundwater level and the influences on environment and social impacts were discussed, some corresponding countermeasures and suggestions were put forward.