柴达木盆地西南缘新月形沙丘连片分布、数量丰富、大小各异、形态多样，是开展沙丘动态演化研究的理想区域。基于2013年和2021年两期高分一号卫星影像和气象资料，分析了柴达木盆地西南缘沙丘区537个新月形沙丘移动、形态和区域风况特征，探讨了沙丘移动的影响因素。结果表明：（1）该区域新月形沙丘移动速率1.43~22.37 m·a^-1，平均移动速率7.23 m·a^-1，沙丘移动方向109.22°~171.28°，平均移动方向142.86°，整体呈NW-SE方向移动。（2）受低风能环境和西北偏西风的影响，该区域新月形沙丘移动速率相对其他沙漠较慢，移动方向与盛行风向基本一致。（3）受沙丘尺度的影响，该区域新月形沙丘越大，移动越慢，呈幂函数递减的关系。（4）该区域新月形沙丘分布密度、植被状况、地形起伏等在一定程度上影响沙丘移动速率。

The barchan dunes are contiguous， rich in quantity， different in size， and diverse in shapes in the southwest margin of Qaidam Basin， which is an ideal area to carry out a study on the dynamic evolution of dunes. Based on GF-1 satellite images of 2013 and 2021 and meteorological data， this study analyzed the migration and morphology of 537 barchan dunes and regional wind regime in this dune field， and discussed the influencing factors of barchan migration. We found： （1） The annual migration rate of barchan dunes in this region ranges from 1.43 m·a^-1 to 22.37 m·a^-1， and the average annual value is 7.23 m·a^-1. The migration direction of barchan dunes ranges from 109.22° to 171.28°， and the average value is 142.86°， moving from northwest to southeast. （2） Influenced by lower wind energy environment and west-northwest wind， the migration rate of barchan dune in this region is slower than that of other deserts， and the movement direction is basically consistent with the direction of prevailing wind direction. （3） Influenced by dune scale， the barchan dune is large， and its migration speed is slow， showing a decreasing power function. （4） The barchan dune distribution density， vegetation condition and topographic relief can influence the speed of dune migration to a certain extent in this region.