在GIS、RS技术支持下，分析了景电灌区1973年、1987年、2003年和2014年土地利用变化。结果表明：土地利用类型总的变化趋势为草地、戈壁、沙地和盐碱地呈减少趋势；耕地、林地、居民点呈增加趋势，耕地的大幅度增加使得景电灌区的景观基质由1987年的戈壁和草地变为2003年的戈壁和耕地。虽然盐渍化土地整体所占比例较小，且在研究时段内其所占面积比例也在逐年减少，但受绿洲内部耕地变逐渐向盐渍地过程的影响，盐渍化对区域社会经济造成的危害却逐步加剧。

Based on GIS,RS technical support,land use change in Jingdian Irrigation Area in 1973,1987,2003 and 2014 are analyzed.
The results show that: ① In the study period,grassland,desert,sandy and saline area decreased,while the arable land,woodland,residential area increased. In Jingdian Irrigation Area,the Gobi was the landscape matrix in 1987,and in 2014 it was the arable land. ② Influenced by farmland salinization process,although the salinization area is small and gradually decreases,salinization hazard for regional social economy is increasing anually.