人工模拟降雨条件下不同土壤抗侵蚀特征的分析

Analysis of Soil Anti-erosion Characteristics under Artificial Rainfall Condition

[目的]开展水动力条件下径流和产沙特征对于探索土壤抗侵蚀特征有着重要的意义。[方法]应用室内人工模拟降雨试验,在同等试验条件下对黄土、黑土、紫色土、红壤坡面产流及产沙特征进行了对比研究。[结果]在同等条件下4种土壤抵抗侵蚀能力大小顺序为黄土<黑土<紫色土<红壤。[结论]在制订保土措施时,应结合不同土壤的侵蚀特征,选择适当的方法,以达到理想的效果。

[ Objective ] There is a great significance of exploration the soil erosion characteristics for analyzing runoff and sediment character- istics under hydrodynamic conditions. [ Method ] The characteristics of surface runoff and sediment yield of loess, black soil, purple soil and red soil were contrastively studied under the same experimental conditions using artificial rainfall experiment. [ Result] Red soil had the best anti-erosion ability, and fallowed by purple soil, black soil and loess under the same condition. [ Conclusion ] When practicing soil conserva- tlon ts, the appropriate method combined with soil characteristics should be selected to achieve the ideal results