研究岩溶区水土流失特征有助于更好地开展岩溶地区水土保持,防止石漠化。通过在岩溶区不同土地利用类型布设9个径流场,利用2008-01-2010-08野外雨季的监测资料,得到岩溶区地表水土流失特征。结果表明:速效钾在土壤中易被淋失,磷富集度平均值最低,全氮、水解氮、有机质富集度的平均含量居中。从土地利用类型来看,富集度表现明显的是坡耕地(自然坡耕地强于移土培肥坡耕地),其次是林地,金银花地和草地富集度最低。根据相关系数可知淤泥养分含量与降雨强度呈极显著相关关系,淤泥养分含量与降雨量成正相关,但是相关性差。淤泥养分流失总量是通过泥沙量与淤泥养分含量来共同体现的。土壤侵蚀模数从大到小的顺序依次为自然坡耕地>移土培肥坡耕地>草地>金银花地>林地。岩溶区并不是每场降雨都要产生径流,主要是大雨尤其是暴雨才生产径流。岩溶区水土流失径流系数平均值在2.31%～14.72%。该研究有助于更好地理解岩溶区水土流失特征,为治理岩溶区水土流失提供科学依据。 Studying the characteristics of soil erosion in karst areas will help to better carry out soil and water conservation in karst areas and prevent rocky desertification. Nine surface runoff fields were allocated to different types of land use in the karst area, and the surface water and soil erosion characteristics in the karst area were obtained from the monitoring data of rainy seasons in 2008-01-2010-08. The results showed that available potassium was easily leached in the soil, the average value of phosphorus enrichment was the lowest, and the average content of total nitrogen, hydrolyzed nitrogen and organic matter was middle. In terms of land-use types, the obvious enrichment is slope farmland (natural sloping farmland is stronger than sloping farmland for transplanting farmland and sloping farmland), followed by woodland, honeysuckle and grassland. According to the correlation coefficient, it was found that there was a significant correlation between soil nutrient content and rainfall intensity. There was a positive correlation between soil nutrient content and rainfall, but the correlation was poor. The total amount of sludge nutrient loss is through sediment and sludge nutrient content to reflect. Soil erosion modulus from descending order of the natural sloping farmland> Sloping soil sloping farmland> Grassland> Honeysuckle> Woodland. Karst area is not runoff every rainfall, mainly heavy rain, especially heavy rains to produce runoff. The average runoff coefficient of soil erosion in karst areas ranged from 2.31% to 14.72%. The study helps to better understand the characteristics of soil erosion in karst areas and provide a scientific basis for controlling soil erosion in karst areas.