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Stable macro- or micro-aggregates are important for preventing soil degradation. The interactions among soil aggregates and stabilizing agents—like clay, soil organic matter (SOM), Fe, and Al oxides—are complex and have not been fully understood.Eight ultisol samples were collected from the surface (0–10cm) and subsurface layers (10–20cm). The macro-aggregate stability was determined by wet sieving,...
Roads play a significant role in altering hydrological processes. Roads cause more erosion to be generated from the hillslope for both road-concentrated flow and rainfall. In this study, six treatments (Natural Restoration, Grass, Grass & Shrub, Sodded Strip, Grass & Farmland, and Farmland) were used to recolonize hillslope plants on a newly built unpaved road. Rainfall simulation (rainfall...
Particle size variation or distribution is a recognized factor influencing crust characteristics, water infiltration and sediment transport during slope erosion. Limited studies have been conducted about particle size and shape variation resulting from the abrasion of soil aggregate in overland flow. This experiment was based on aggregate abrasion in a 3.8m long flume with a fixed bed, and the particle...
Rainfall splash erosion is a temporal dynamic process that is determined by the interaction of soil surface and rainfall conditions. The properties of aggregate, such as aggregate stability and size distribution, are recognized as factors that influence the variation in soil surface structure and sediment selectivity during splash erosion event. This study based on aggregate stability to investigate...
The assessment of soil erodibility to water erosion in the field is often expensive and time-consuming. This study was designed to reveal the effects of aggregate breakdown mechanisms on interrill erosion dynamics and develop an improved model for assessing interrill soil loss, which incorporated the soil aggregate stability tests as a substitute for the interrill erodibility parameter, from both...
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