Sealing Process and Crust Formation at Soil Surface Under the Impacts of Raindrops and Polyacrylamide
降雨及聚丙烯酰胺(PAM)作用下土壤的封闭过程和结皮的形成

Soil seals and crusts are formed at the surface of soil due to the impacts of raindrops and break of aggregates. Soil seals and crusts can significantly reduce soil infiltration rate and subsequently low the utilization of water resources, and increase runoff, which result in soil erosion. Study of the processes of seals and formation of crusts is of very importance to understand the interrelations of runoff, infiltration, and soil erosion under rainstorms. The objectives of this study were for better under...