The field experiment was conducted in a bare sandy farmland during erosion prone spring to study the dynamics of daily wind
erosion sediment and to develop a predictive equation relating daily wind erosion sediment to daily average wind velocity and daily duration of erosion induced wind (≥5m/s at 10 m height) event. The main results were as follows:(1)During the 39 day observation period between March 22 and April 29, daily wind erosion sediment ranged from 1.32 g/m 2 to 130.33 g/m 2, with an average of 24.12 g/m 2, equivalent to 241.20 kg/hm 2. Total amount of wind erosion sediment over the entire observation period was 940.68 g/m 2, equivalent to 9 406.80 kg/hm 2. (2)In terms of the observed data of daily wind erosion sediment and the contents of soil organic carbon and nitrogen in the sedimentary material samples, the calculated daily average losses of soil organic carbon and nitrogen through wind erosion were 1.52 kg/hm 2 and 0.15 kg/hm 2, respectively. Total amount of soil organic carbon and nitrogen loss over the entire observation period was 59.28 kg/hm 2 and 5.85 kg/hm 2, respectively. (3)The particle size distribution analysis of the sedimentary soil material revealed that the proportion of coarse sand (diameter:0.5～0.1mm), fine sand (diameter: 0.1～0.05mm), silt(diameter: 0.05～ 0.002 mm) and clay (diameter< 0.002 mm) was 11.22%, 46.01%, 21.03% and 21.74%, indicating that more nutrient rich micro soil particles were blown away by wind from the bare sandy farmland. (4)Daily soil erosion sediment was found to significantly and positively correlate with daily average wind velocity; Similarly, we found a significant positive relationship between daily wind erosion sediment and daily duration of erosion induced wind event.