对“分水岭迁移和河流袭夺”理论的进一步探讨

On the Theory of Migration of Divide and River Capture Discussed Further

该文对“分水岭迁移和河流袭夺”理论中的一些不足提出了自己的见解。认为，河流袭夺概念有其特定含义，河流袭夺和河流侵并两种河流兼并现象并存不悖；溯源侵蚀是河流袭夺的主因，但不是唯一原因；无冲刷带并非绝对的无冲刷，低位河的侵蚀通过“侵蚀链”最终能够切穿分水岭，无冲刷带不是河流袭夺不可逾越的障碍。

In this paper,raising personal opinion about some mistakes in the theory of migration of divide and river capture,I consider that the idea of river capture has its own special meaning. The phenomena of river annex,both river capture and river invade-annex can exist simultaneously. Headward erosion is main cause of river captrue,but it is not only; Erodeless belt is not absolute erodeless; Erosion of below river can cut through the watershed by 'erosion chain' at last,Erodeless belt is not obstacle to river capture.