摘要
采用ArcGIS中UK法,研究了西北干旱内陆区石羊河流域中游武威盆地1983—1999年的地下水位变化。计算结果表明:该地区地下水位分布由西南向东北递减,且在20世纪90年代其地下水位的下降趋势明显。并在此基础上,分析比较了农耕地、河流边缘、城镇、沙漠边缘、草地、林地等6种不同的土地类型在这近20年的地下水位埋深变化及其年均降幅。结果表明,不同土地类型的地下水位埋深的年均降幅并不相同,依次是:城镇最大;农耕地和草地次之;沙漠边缘和河流边缘地区较小;林地最小。
The Wuwei Basin is located in the middle reaches of the Shiyang River basin. The change of groundwater table of Wuwei Basin during 1983-1999 was investigated using the UK method in ArcGIS. The results show that the general trend of groundwater table gradually dropped from southwest to northeast, and in the 1990s, the groundwater table significantly dropped year by year. How the groundwater table changed during 1983-1999 and the annual decrease range in six different land types （irrigation lands, towns, grasslands, the edge of desert area, the edge of rivers and woodlands） were also analyzed. The results show that, the largest average annual drop occurred in towns, irrigation lands, grasslands, the edge of desert area, the edge of rivers and the woodlands. The second largest occurred in irrigation lands, the third largest in grasslands, the fourth largest in the edge of desert area, and the smallest in the ledge of rivers and woodlands.
出处
《中国水利水电科学研究院学报》
2014年第3期287-290,共4页
Journal of China Institute of Water Resources and Hydropower Research
基金
泥基本科研1415
泥集1311
Z121100000112008
