沙丘形态特征是风沙地貌研究的重要内容。通过野外实地考察及Google Earth高分辨率影像，对柴达木盆地西南缘山前沙丘区风沙地貌的空间分布格局进行分析和描述，并探究主要沙丘的形态参数特征。结果表明：（1）基于沙丘的形态-动力学分类原则，研究区沙丘共划分为12类；从发育规模来看，简单型沙丘占比大，复合型、复杂型沙丘占比小；从形态特征来看，以横向沙丘为主。（2）基于沙丘类型的空间变化特征，研究区可划分为5个亚区，风况和河流是导致沙丘类型空间分布差异的主要因素。（3）研究区各类型沙丘发育规模小，这与沙丘发育时间短、沙源供应少密切相关。新月形沙丘的形态参数宽度（w）与高度（h）之间呈良好的线性相关关系，可表达为w=9.47h+14.89。沙丘高度（h）与间距（λ）呈幂函数关系，且幂指数n均小于1。本研究丰富了柴达木盆地风沙地貌的研究内容，为后续的沙丘发育演化模式研究奠定了基础，同时对格库铁路防沙治沙和安全运行具有重要的参考价值。

The morphological characteristics of sand dunes are an important part of the study of aeolian geomorphology. This paper takes the dunes in the piedmont of southwestern Qaidam Basin （also known as the southwestern Qaidam sand area） as the research object. Through field work and high-resolution images provided by Google Earth， the spatial distribution pattern of aeolian geomorphology was analyzed and described. The results show that： （1） Based on the principle of morphological-dynamic， the study area is divided into 12 types； In terms of development scale， simple sand dunes account for a large proportion， while complex and compound sand dunes account for a small proportion； In terms of morphological characteristics， it is dominated by transverse dunes. （2） Based on the spatial change characteristics of sand dune types， the study area is divided into 5 sub-regions. Wind conditions and rivers are the main factors that cause the differences. （3） The analysis of the morphological parameters shows that the development scale of sand dunes is small， which is related to the short development time and the lack of sand source. There is a good linear correlation between width （w） andheight （h）， that is w=9.47h+14.89. Theheight （h） of the main sand dunes has a power function relationship with the spacing （λ）， and the power exponent n is less than 1. This article has enriched the research content of the Qaidam Basin， laid the foundation for the dune development and evolution model， and has important reference value for the sand control and safe operation of the Ge-Ku Railway.