土壤风蚀是干旱、半干旱地区重要的生态环境问题。河北坝上地区是中国北方典型土壤风蚀区，特殊的地理位置使本区成为京津冀重要的生态屏障。为了更好地阐明坝上地区的土壤风蚀过程，完善该区域的风沙防护体系，基于气象、土壤、遥感和土地利用等数据，利用综合风蚀模拟系统（Integrated wind-erosion modeling system，IWEMS），计算了河北省坝上地区的土壤风蚀模数。结果表明：2000—2018年，坝上地区平均风蚀模数与风蚀风险区所占面积比例总体均呈减小趋势。月平均风蚀模数变化表明，11月至次年5月是主要风蚀季。风蚀程度以轻度和中度侵蚀为主，风蚀灾害主要发生在坝上地区中西部。自2009年以来，康保县和张北县的风蚀模数逐渐降低，丰宁县西部的风蚀模数逐渐增加。通过对土壤风蚀影响因素的数据分析，发现不同土地利用类型的风蚀模数为沙地>耕地>草地>林地，植被盖度和土壤湿度是影响风蚀模数月变化的主要因素，起沙风累计时间与风蚀模数正相关。

Soil wind erosion is one of the major ecological environmental problem in arid and semi-arid areas. Bashang region of Hebei Province is a typical wind erosion area in northern China. Its special geographical location makes it an important ecological barrier in Beijing-Tianjin-Hebei. In order to better understand the process of soil wind erosion in Bashang region and improve the wind and sand protection system in this region， this study calculates the soil wind erosion modulus in Bashang region of Hebei Province using the integrated wind erosion modeling system （IWEMS） based on meteorological， soil， remote sensing data and land use data. The results showed that from 2000 to 2018， the average wind erosion modulus and the proportion of wind erosion risk areas in Baishan region showed a decreasing trend overall. The variation of monthly average wind erosion modulus indicates that the wind erosion mainly occurred from November to May. The degree of wind erosion is mainly mild to moderate， and wind erosion disasters mainly occur in the central and western parts of the Baishan region. Since 2009， the wind erosion modulus in Kangbao County and Zhangbei County has gradually decreased， while the wind erosion modulus in the western part of Fengning County has gradually increased. Through data analysis on the factors affecting soil wind erosion， it was found that the wind erosion modulus of different land use types ranked as follows： sandy land > cultivated land > grassland > forestland. Vegetation cover and soil moisture were the main factors affecting the monthly variation of wind erosion modulus， and cumulative sand-carrying time was positively correlated with wind erosion modulus.