Changes of the erosion type and the rill erosion process under simple rainfall is one of the key problems in soil erosion research. By placing rare earth elements (REE) on different soil depth across the slope, the simulated rainfall is applied to study the change of erosion type and the rill erosion process. The results indicate that the main erosion type is sheet erosion at the beginning of the experiment, and serious erosion happens after the rill erosion appears. Accumulated the sheet erosion amount an...
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