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风蚀引起大量植物营养的输移，导致土壤养分和土地生产力的变化。在加拿大Ａｌｂｅｒｔａ南部建立了２个风蚀预测系统（ＷＥＰＳ）模型的试验区。从 ２９次风蚀事件中，选取了 ４００多个风积物样品。通过对风积物中营养物含量与相邻原始表土中营养物含量的比较及作物产量的监测，发现在试验１区，２５ ｃｍ高处风积物中全氮的平均富集率（风积物中养分、有机质与侵蚀表土中养分、有机质的比值）为１．１１，有机碳平均富集率为１．０２；试验Ⅱ区，全氮平均富集率为１．０８，有机碳为１．０５。土地生产力的变化通过春小麦的产量反映出来，随着风蚀的加强，春小麦的产量呈线性下降趋势。结果表明，必须采取有效措施控制风蚀，以确保加拿大半干旱草原地区的农业可持续发展。
Wind erosion causes the transport of large amounts of plant nutrients, leading to changes in soil nutrients and land productivity. Two pilot sites for the WEPS model have been established in southern Alberta, Canada. From 29 wind erosion events, more than 400 samples of aeolian material were selected. By comparing the nutrient content in aeolian material and the nutrient content in the adjacent primitive topsoil and the monitoring of crop yield, it was found that the average enrichment rate of total nitrogen Nutrients, organic matter and erosion of topsoil nutrients, organic matter ratio) was 1.11, organic carbon average enrichment rate was 1.02; Test Ⅱ area, the average nitrogen enrichment rate was 1.08, organic carbon was 1 .05. The change of land productivity was reflected by the yield of spring wheat. With the increase of wind erosion, the yield of spring wheat decreased linearly. The results show that effective measures must be taken to control wind erosion to ensure sustainable agriculture in the semi-arid grasslands of Canada.