基于EPIC模型的粉粒含量与土壤可蚀性关系研究
Study on the Relationship between Silt Content and Soil Erodibility Based on EPIC Model

土壤可蚀性是土壤侵蚀研究的重点问题之一，为研究土壤粉粒含量与土壤可蚀性K值关系，依据EPIC模型，构建了沙粒、粉粒、粘粒含量分别为1%到98%的所有整数组合的数据集，计算了在有机质含量为2%的前提条件下的土壤可蚀性K值，分析了各种粘粒含量条件下土壤可蚀性与粉粒含量的关系，结果表明两者间存在明显正相关关系，粉粒含量中等时，前者斜率大于后者，粉粒含量较大或较小时，前者斜率小于后者。
Soil erodibility is one of the key issues in soil erosion research. According to the EPIC model, a data set of all integer combinations of sand, powder, and clay content from 1% to 98% was constructed for studying the relationships between soil powder content and soil erodibility K value, and the soil erodibility K value under the premise of an organic matter content of 2% was calculated. The relationship between soil erodibility and silt content under various clay content conditions is analyzed, and the results show that there is an obvious positive correlation between the two. When the silt content is medium, the slope of the former is greater than the latter, and when the silt content is larger or higher, the slope of the former is smaller than that of the latter.