中文摘要：

在全球温暖下面，暴风雨事件趋于加强，特别地在影响季风的区域。作为在中国的一个重要农业区域，在它有占优势的季风气候的地方，在四川盆的紫色土壤区域被严肃的土壤侵蚀威胁。耕种操作由改变土壤表面的物理性质在农田上改变流量和土壤侵蚀过程。为了在紫色澄清在耕种和土壤侵蚀之间的关系，玷污区域，在这个区域的三个不同耕种惯例在 4 年在阴谋规模被调查：有最小的耕种(BL ) 的赤裸的土地，常规耕种(CT ) 和开始被设计阻止的季节的没有耕种垅(SNTR ) 由 contoured 垅和没有耕种技术玷污侵蚀。尽管在三个惯例之中在表面流量和土壤侵蚀没有重要差别，结果显示出那， BL 引起了相对高的表面流量和土壤侵蚀，由 CT 和 SNTR 列在后面。降雨事件的分类和比较基于簇分析(CA ) 证实表面流量不在很集中的事件和长集中的事件之间是显著地不同的，但是在很集中、短、中等持续时间的事件之间是显著地不同的。有最高的降雨紧张的仅仅降雨事件能触发严肃的土壤侵蚀，直到 1000 kg 哈 < 啜 class= “ a-plus-plus ” > 在这个区域的 1 。在有季风气候的一个副热带的区域的土壤侵蚀上的耕种操作的效果上的进一步详细的调查被需要为为集水建模并且设计更好的管理惯例提供一个基础。

英文摘要：

Under global warming, storm events tend to intensify, particularly in monsoon-affected regions. As an important agricultural area in China, the purple soil region in the Sichuan Basin, where it has a prevailing monsoon climate, is threatened by serious soil erosion. Tillage operations alter runoff and soil erosion processes on croplands by changing the physical properties of the soil surface. To clarify the relationship between tillage and soil erosion in the purple soil region, three different tillage practices in this region were investigated at the plot scale over 4 years： bare land with minimum tillage （BL）, conventional tillage （CT） and seasonal no-tillage ridges （SNTR） which was initially designed to prevent soil erosion by contoured ridges and no-tillage techniques. The results showed that although there were no significant differences in the surface runoff and soil erosion among the three oractices, BL caused relatively high surface runoff and soil erosion, followed by CT and SNTR. Classification and comparison of the rainfall events based on cluster analysis （CA） verified that the surface runoff was not significantly different between most intensive event and long intensive events but was significantly different between most intensive and short and medium-duration events. Only the rainfall events with the highest rainfall intensity could trigger serious soil erosion, up to 1000 kg ha^-1 in the region. Further detailed investigations on the effects of tillage operations on the soil erosion in a subtropical region with a monsoon climate are needed to provide a basis for modeling catchments and designing better management practices.