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通过野外观测与室内风洞实验模拟，结合研究区气象资料统计分析，研究了塔克拉玛干沙漠中部地区线形沙丘表面动力学过程。结果表明，塔克拉玛干沙漠中部地区的线形沙丘与主风向的夹角为１２．５°，与年合成输沙方向（ＲＤＤ）的夹角为４．８°。年合成风向与主风向一致，但风向变率较大。风洞模拟实验揭示，当风向与线形沙丘的夹角较小时，沙丘背风侧均有旁侧气流存在，且随夹角增大而减弱。气流与输沙势分解结果显示，由于平行于沙丘的输沙分量显著大于垂直于沙丘的输沙分量，使线形沙丘纵向移动较快，约为１０ｍ·ａ－１。整体侧向移动不明显，但因风向变率较大，沙丘基座以上局部侧向移动频繁；平行于沙丘的气流分量大于垂直于沙丘的分量，加上背风侧旁侧气流盛行，使沙粒的总体运动方向平行于沙丘的走向方向，从而使线形沙丘在快速纵向移动的过程中保持形态基本不变。
Through the field observation and indoor wind tunnel experiment simulation, combined with the meteorological data statistical analysis in the study area, the surface dynamic process of the linear dunes in the central Taklamakan Desert was studied. The results show that the angle between the linear sand dunes and the main wind direction in the central part of the Taklamakan Desert is 12.5 ° and the angle with the annual synthetic sediment transport (RDD) is 4.8 °. The annual synthetic wind direction and the main wind direction, but the wind direction variable rate larger. The wind tunnel simulation experiment revealed that when the angle between the wind direction and the linear sand dune is small, there is a lateral air current on the leeward side of the sand dune, and the weakened air current increases with the angle increasing. Airflow and sediment transport decomposition results show that the linear sand dune moves longitudinally faster, about 10m · a-1, because the sediment transport component parallel to the sand dune is significantly larger than that of the sediment transport component perpendicular to the sand dune. The overall lateral movement is not obvious, but due to the greater wind rate variability, the dune base above the local lateral movement more frequent; parallel to the dune airflow component is greater than the vertical component of the sand dune, coupled with the leeward side of the prevailing airflow, sand The overall direction of movement is parallel to the direction of the sand dunes, so that the linear dunes remain in the same shape during the rapid longitudinal movement.