黄土坡面侵蚀过程实验研究Ⅱ．坡面形态过程

Experimental Study on Erosion Processs over Loess SlopesⅡ.Surface Flow and Sediment Transport

伴随着黄土坡面上的产流产沙过程，黄土坡面形态亦在经历一个迅速变化的过程。该文主要研究坡面平面形态及其纵剖面形态的变化与侵蚀类型及微地貌形态的关系。对于具有特殊意义的平衡状态下的坡面侵蚀机理之探讨，该文结合前文［１］中的各类过程对面蚀与沟蚀机理分别进行了研究，从而初步揭示了黄土坡面侵蚀过程中坡面形态变化的机理。

Following the companion paper on the process of surface flow and sediment transport,the writers are now presenting the detailed results on the patterns over slopes (hoth surface andvertical profiles)as well as variations. Characteristics of the processes in the steady state are spe-cially discussed.Furtherrmore,mechanism of pattern-variation over slopes with both erosion andmicro-geomorphic types are studied based on the experimental data. This also helps us to under-stand why the loess landform over slopes varies during the different erosion stages.