In addition, increasing the slope of the flume from 10% to 20% increased the total AgNPs transported with the runoff sediment by a factor 1.5. The effects of rainfall intensity and slope gradient on runoff, soil loss and rill development were different for the two soils. The runoff and soil loss from the Anthrosol surface were generally higher than those from the Calcaric Cambisol surface. Effect of tillage, slope, and rainfall on soil surface microtopography quantified by geostatistical and fractal indices during sheet erosion Na Ta tana0214@163.com 1 , Chutian Zhang zhangchutian@nwafu.edu.cn 1 , Hongru Ding dinghongru@nwsuaf.edu.cn 2 and Qingfeng Zhang zhqf@nwsuaf.edu.cn 1 Main storm characteristics and soil losses were plotted and equation of the line of best fit were selected. February 2017; DOI: 10.13140/RG.2.2.26247.39841. 1- Expérimentation de nouveau matériaux dans les procédés d 'épuration. The interrill erosion mechanism is becoming clearer, and process-based models are becoming more accurate. In particular, storms with increasing rainfall intensity yielded highest quantities of eroded sediments, total runoff and highest sediment concentrations followed by increasing then decreasing, decreasing then increasing and decreasing intensity, respectively. The storm patterns were: (1) increasing rainfall intensity (2) increasing then decreasing intensity (3) decreasing intensity (4) decreasing then increasing intensity. It was observed that values of sediment outflow rate and average sediment concentration had a good correlation with rainfall intensity and land slope for each mulch treatment. de Lima and Singh, 2003, de Lima et al., 2008). The close relationship between water erosion and rainfall intensity is due to: (1) impact of raindrops on soil surface in high-intensity storms causes increased soil particle detachment (Van Dijk, Bruijnzeel, & Rosewell, 2002); and (2) higher rainfall intensity results in higher rates of infiltration excess runoff, and a much greater transport of suspended sediment load . Soil moisture content and organic matter make up are some of the soil component aspects that determine erosivity of wind or rainfall. ... is vulnerable to soil erosion due to heavy rainfall, its high elevation and undulating terrain. (1988) compared the effects of six different rainfall patterns on runoff and soil … However, effects of long‐term located experiment of RFRH on soil erosion and soil quality in sloping farmland are not well understood. Therefore, the soil erosion rate increases strongly with increasing organic content and clay content. If we would consider the usual lower limits from the literature, we would be ignoring an important percent of natural rainfall episodes. Plastic rods were used to simulate the plants at different densities: 0 stem/m2 (bared soil), 126 stems/m², 203 stems/m², 461 stems/m² and 2500 stems/m²). Statistical analysis revealed significant differences in total runoff, soil loss and sediment concentration across four storm patterns (P<0.001) but no differences in the runoff coefficient. rainfall moved from the top of a slope to the downslope outlet) than upslope-moving rainfall (i.e. The average sediment concentration and outflow was found to be increasing with the increase in land slope, but sediment concentration and outflow decreased with increasing mulch rate for particular land slope and rainfall intensity. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Effect of Slope, Rainfall Intensity and Mulch on Erosion and Infiltration under Simulated Rain on Purple Soil of South-Western Sichuan Province, China Muhammad Naeem Khan 1, Yuanbo Gong 1,*, Tingxing Hu 1, Rattan Lal 2, Jiangkun Zheng 1, Meta Francis Justine 3, Muhammad Azhar 2,4, Mingxuan Che 1 … It can lead to degradation of land productivity and water pollution, which limit human survival and development. Higher rainfall intensity produced less runoff and more sediment for almost each treatment. rainfall moved from the downslope outlet to the top of a slope) (e.g. Ridge‐furrow rainfall harvesting (RFRH) planting could improve crop productivity through enhancing water‐use efficiency. Soil erosion on cultivated land was primarily affected by moisture content, while on uncultivated land, it was mostly affected by slope steepness. During the investigation (November 2016–October 2018), soil water content, rainfall, runoff, and soil erosion were continuously monitored. impact of rainfall patterns on erosion processes has become a popular research subject in recent years. Copyright © 2021 Elsevier B.V. or its licensors or contributors. Keys words __ rain intensity, overland flow, soil erosion, vegetation, selected land slopes under simulated rainfall conditions by using rainfall simulator of size 10 m × 1.2 m × 0.5 m with the locally available soil material in Pantnagar. The results show that the soil erosion rate in areas of metamorphic rocks shows a marked increase compared with areas of steep slope and sedimentary rocks. However, few attempts have been made to analyze the effects of rainfall and inflow on soil erosion for hillslopes dominated by sheet erosion or rill erosion in the Chinese Mollisol region. Secondly, rainfall regimes had an important effect on runoff and soil loss under different land uses. The study confirms that AgNPs can be transported by both overland flow and sediment due to erosion. These results indicate that the geological characteristics to produce soil are closely related to sedimentation before and after erosion, providing basic information for the development of models to predict soil erosion rates. The runoff distribution pattern was observed to be increasing with the increase in land slope. As rainfall continues, the storage of the furrow is exceeded by the volume of rainfall and runoff will overflow the furrow. It was carried out under semiarid conditions and infertile sandy soils of Zimbabwe. Therefore, an artificial, simulated rainfall experiment study is conducted to determine the effect of rainfall intensity and vegetation cover on runoff volume, sediment load, and runoff hydraulics characteristics. AgNPs were detected in all samples collected. Slope steepness was an important topographic factor of hillslope rainfall-runo and soil erosion processes. However, neither the main effect of the soil type for runoff nor the effect of the interaction between the subsequent rainfall and the soil type for percolation was found to be significant at the The results showed that the upslope-moving rainfalls generated more surface flow from 25% to 700% and less soil erosion than the downslope-moving rainfalls in the dry runs due to the different spatial developing processes of soil surface sealing. Keywords: Rainfall simulator, Mulch, Sediment outflow, Runoff, Pantnagar. The runoff and soil loss from the Anthrosol surface were generally higher than those from the Calcaric Cambisol surface. Effect of vegetal cover on runoff and soil erosion under light intensity events. Érosion hydrique dans un contexte de changement global of cookies as compared to mulch treated lands nutrient and sediment to! Becoming clearer, and soil erosion on cultivated land was primarily affected slope! Changement global and Singh, 2003, de Lima and Singh,,! 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