On the base, the gully erosion process, the gully erosion developing condition and the interactivity between sheet erosion and gully erosion have been described.

• 在此基础上，对侵蚀沟由顺犁沟发展至槽沟的发展过程、发展条件，以及面蚀与沟蚀的发展转化关系进行了阐述。