Characterization of Surface Runoff Pathways and Erosion Using Hydrological Attributes Under Simulated Rainfall
نویسندگان
چکیده
Conceptualisation of geo-hydrological characteristic erosive runoff are particular importance and has been required in recent soil erosion control. This study aimed to explore the feasibility applying hydrological attributes characterize surface pathways process hillslope due rainfall. Combined with sub-millimeter high-resolution laser scanning computer digital image processing method, three indicators (i.e., sinuosity, gradient orientation) were used investigate changes on slope typical southern red soils shale (HS), Quaternary clay (HQ1 HQ2) under simulated rainfall conditions). The results indicated no significant sinuosity a mean value 1.19. After intensity 1 mm/min 2 mm/min, orientation changed dramatically. greatest appeared at first rainfall, which showed that biggest increase was 26.78% it tended be close original test plot, while dropped by 5.60–31.44%. Compared HS HQ1, pathway characteristics HQ2 more consistent. intensities had impact correlation between indicators. determination coefficients sorting roughness > graient sinuosity. And they significantly linearly related intensity, positive sediment ( p < 0.05). In conclusion, there remarkable relationships orientation, intensity. provided an innovative idea, is simulation prediction model sloping farmland area.
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ژورنال
عنوان ژورنال: Frontiers in Earth Science
سال: 2021
ISSN: ['2296-6463']
DOI: https://doi.org/10.3389/feart.2021.683473