[Impacts of upslope inflow and soil pipe collapse on slope water erosion in the typical Chinese Mollisol region].

Understanding the effects of upslope runoff and soil pipe collapse on slope water erosion can provide scien-tific basis for preventing Mollisol degradation caused by soil erosion. We conducted an experiment to investigate the effects of upslope inflow rate and soil pipe collapse on slope water erosion and to quantify the contribution of soil pipe erosion to slope soil erosion. The experiment included three inflow rates (30, 40, and 50 L·min) and three near-surface soil hydrological conditions (without soil pipe: NP; with soil pipe but no pipe flow: PF; with pipe flow: PF).

[Impacts of seepage flow and soil thaw depth on hillslope snowmelt erosion in Chinese Mollisol region].

Snowmelt erosion is an important way of soil loss in Chinese Mollisol region. However, little is known about the effects of seepage flow and soil thaw depth on hillslope snowmelt runoff erosion. An indoor simulated experiment was conducted to analyze the impacts of seepage flow and soil thaw depth on hillslope snowmelt erosion.