一、历史演变杭州湾北岸南汇段又称南汇县南滩,位于长江口南岸南端至杭州湾北岸末端,西至奉贤县交界(泻水槽)东至塘角咀,是长江与钱塘江两江汇合的岸段,全长10余km。据历史文献记载距今2000年前,现代杭州湾中的王盘山,曾与陆地相继,距今1250年左右,大小金山相继入海,成为海中孤岛,公元713年,现南汇县的航头到周 I. Historical evolution Nanhui, the northern bank of Hangzhou Bay, is also called Nantan Nanhui County. It is located at the southern end of the south bank of the Yangtze River estuary to the end of the north bank of Hangzhou Bay. From the west to the border of Fengxian County (diarrhea tank), it is the junction of the Yangtze River and Qiantang River. Shore segment, more than 10 km in length. According to historical records 2000 years ago, the modern Hangzhou Bay Wang Panshan, and the land have been, from about 1250 years ago, the size of Jinshan have entered the sea, becoming an island in the sea, the year 713, is now in Nanhui County, the first flight to the week