2026 ENVIRONMENT PROTECTION ENGINEERING 2026 52(卷), 1(期), (141-161页)
Based on data collected from September to November in a single year, this study investigates the effects of wind speed, wind direction, topography, and seasonal variations on aeolian sand transport and sedimenta-tion dynamics in the Danghe Reservoir area. Sedimentation rates varied markedly among sites: the sand-dune plot on Mingsha Mountain recorded a peak of 13.5 kg & centerdot;month-1 in November, reflecting the highest local wind speeds. The right bank, dominated by fine particles (20.48% in the 0.002-0.005 mm range), dis-played very low and stable deposition of 0.05-0.06 kg & centerdot;month-1, indicating weaker winds. By contrast, the left bank accumulated 0.18-0.29 kg & centerdot;month-1 and exhibited a more uniform grain-size spectrum, signalling greater transport potential. SEM analysis showed smoother grains on the right bank but more weathered, angular particles on the left bank and at Mingsha Mountain. Vertically, finer particles were concentrated in the upper layers, especially at 0.64-0.80 m. These findings show how wind regime and terrain jointly shape aeolian transport and deposition, offering guidance for sand-control measures and water-resource management in arid regions.
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