Environmental resistance parameters generated by soil and semi-arid crops under inter-rill erosion and overland flow with low Reynolds numbers

Under overland flow with low Reynolds numbers, the resistance parameters generated by the soil and vegetation are crucial under current climate change conditions. The inter-rill erosion occurring under this overland flow can lead to inter-rill erodibility as a resistance parameter, and each type of plant generates different vegetal drag coefficients and hydraulic resistance parameters. A set of sixteen simulated rainfall events capable of generating overland flow on an Fluvisol tilled with a semiarid agroforest, cactus, under a litter layer, and under bare conditions was applied. The overland flows generated were laminar tranquil flows with very low Reynolds numbers varying from 6 to 25 on bare soil. • Environmentally sustainable indicators from soil and semi-arid plants. • Hydraulic resistance and soil erodibility linked to overland flow at low Reynolds number. • Semi-arid crop systems and shrub generating environmental service.