Effects of Straw Mulching on Near-Surface Hydrological Process and Soil Loss in Slope Farmland of Red Soil

Slope farmland is prone to soil erosion, especially in sub/tropical regions. However, our understanding of near-surface hydrology characteristics and their controlled factors red sloping remains limited. Here, we conducted simulated rainfall experiments assess the impact pattern, straw mulching, structure on hydrological processes southern China. Results showed that: (1) short duration-high intensity rain caused greater surface runoff sediment production than did long duration-low rain, whereas variation pattern subsurface flow exhibited opposite trend; (2) tillage behavior could weaken promote development flow; (3) mulching increased water infiltration rate associated (increased by 1.33~12.71 times), thus reduced (reduced 99.68~100%). These findings highlight crucial roles regulating spatial distribution rainwater suggest that can effectively reduce erosion via accelerating form slope