Since the last glaciation, with variations in sea level, the development of incised valleys in the Hangzhou Bay area underwent three stages: 1) deep-cutting stage; 2) rapid-filling stage; and 3) rapid-burial stage.

• 末次冰期以来，随着海平面变化，杭州湾地区下切河谷演化经历了深切、快速充填和埋藏三个阶段。