在鄱阳湖西南缘，风成砂质堆积的下风向，有厚层黄棕壤发育，OSL年代显示，为末次冰期风沙和风尘堆积。在厚田—打鼓岭断面，对沙山到黄棕壤的沉积物粒度并结合地貌学进行分析，发现：沿现代冬季风方向（NE 30°）自东北向西南，地表沉积相为沙—沙黄土—粘黄土逐渐过渡，粒度组成和粒度参数表现出从北而南的系统性变化，显示搬运动力和物源均单一且稳定；粒度参数与物源地的距离，服从对数函数分异模式，在约20km范围之内，变化最剧烈，之后渐趋平稳，20 km是碎屑分选的特征距离。研究结果给出了鄱阳湖西南存在风沙—风尘堆积体系的证据，并揭示了近源风成堆积沉积指标的变化规律，可为粉尘堆积的物源示踪提供相关理论参考。
The yellow brown soil had been formed in the downwind direction of the aeolian sand deposits in the southwestern margin of Poyang Lake which was revealed by OSL age test as the sand and dust accumulations in the last glacial period. According to the grain size analysis and the geomorphology and sedimentology study of the sand hill and the solum (yellow brown soil) in the Houtian-Daguling transect in the south-west bank of the Gan River, we concluded that sedimentary facies of this section had been transmitted from sand to sandy loess soil to clay loess along the direction (NE 30°) of the present winter monsoon. The grain composition and parameters show a systematic change from the north to the south with carry momentum and single and stable provenance. The grain parameters displayed a differential mode of a logarithmic function with the distance to the provenance. Within the distance of 20 km, they changed significantly, but out of this distance, they gradually tended to be stable. Thus, the distance of 20 km might be a characteristic distance for debris sorting. The OSL age test shows that the accumulation system was generated from (94.18±4.82)ka which is consistent with the regional age framework. The study of regional sand-dust accumulation system in this area will provide a theoretical basis for the provenance identification of dust accumulation.
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