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黄河是我国第二条大河,多年平均年迳流量442.8亿立米,挟带入海沙量近11亿吨,以水少沙多闻名于世界。自1855年从苏北改造注入渤海以来,河口三角洲岸线不断外移。据庞家珍、司书亨的研究结果,在1855—1954年间,造陆速率为23平方公里/年,平均岸线外延速率为0.15公里/年;1954—1972年间,造陆速率为23.5平方公里/年,平均岸线外延速率为0.42公里/年,造陆速率基本未变,只是因河口范围缩小,致使河口外延速率增加。
The Yellow River is the second largest river in our country. The average annual flow of water is 44.28 billion cubic meters. The Yellow River brings the sediment volume of nearly 1.1 billion tons to the world with less water and less sand. Since the transformation from the Northern Jiangsu to the Bohai Sea in 1855, the estuarine coastline has been constantly relocated. According to the study by Pang Jiazhen and Secretary Shuheng, the land-making rate was 23 km 2 / year and the average coastline delineation rate was 0.15 km / year between 1855 and 1954. From 1954 to 1972, the land-building rate was 23.5 km 2 / In the year, the average coastline extension rate is 0.42 km / year, and the land-based rate has basically remained unchanged, only due to the narrowing of the estuary, resulting in an increase of the estuary extension rate.