Data for: Evaluating the regulation of runoff hydraulics and sediment-source redistribution by rainfall kinetic energy across erosion stages on purple-soil slopes using rare earth element tracers

Supporting data associated with the study of rainfall kinetic energy regulation of runoff hydraulics and sediment-source redistribution across erosion stages on purple-soil slopes. The deposit includes hydrodynamic datasets, rare-earth-element tracer data, and an analysis-ready table used with R. Detailed experimental procedures, variable derivations, and scientific interpretation are provided in the associated article.