掘沟冲蚀 Gully erosion

小沟冲蚀 Rill erosion ; rill wash

纹沟冲蚀 Rill erosion

冲沟侵蚀 gulch erosion

纹沟间冲蚀 Interrill erosion

沟壑冲蚀 Erosion gully

沟蚀冲切 gullycutting

沟坚冲蚀 Gully erosion

冲沟腐蚀 gully erosion