中文摘要：

到人的活动的鸭绿江河河口的反应被调查。沉积动力学的变化通过水动力学计算，以及重矿物质和谷物尺寸分析在过去的 10 年期间被探索。另外，河口 geomorphological 进化的特征与历史的数据相比。动态过程和 geomorphological 进化主要是的长期的沉积由源于人的活动的水分泌物和沉积供应的减少影响了。自从 1941，鸭绿江河河口的全部河口系统也经历了重要变化那与构造水库影响的水减小和沉积分泌物被联系。河口最后在 1980 年代形成了当前的模式。与水和沉积分泌物的变化相比，沙挖出直接在过去的 10 年里影响了河口沉积动力学。来自在 2009 测量的六个水动力学车站的数据显示水流带来的碎石运输流动实质地与在 1996 调查了那相比在一个潮汐的周期期间减少了。水流带来的碎石运输方向也在 1996 从朝海的方向改变了到向陆地在 2009。另外，河口床负担运动变化是：来自有水深度的区域的(a) 沉积是不到 5 m 向陆地从海被搬运；来自有在 5 ～ 20 m 之间的水深度的区域的(b) 沉积运输向海是面向的；并且来自有比 20 m 大的水深度的区域的(c) 沉积向陆地从海被传送。

英文摘要：

The response of the Yalu River Estuary to human activities was investigated. Changes of sediment dynamics during the past 10 years were explored through hydrodynamic calculation, as well as heavy mineral and grain size analysis. In addition, the characteristics of estuarine geomorphological evolution were compared with historical data. The long-term sediment dynamic process and geomorphological evolution were primarily affected by the decrease of water discharge and sediment supply resulting from human activities. The entire estuarine system of Yalu River Estuary has also undergone significant changes since 1941 that are associated with water reduction and sediment discharge affected by construction reservoirs. The estuary eventually formed the current patterns in the 1980s. Compared with variations of water and sediment discharge, sand dredging directly affected the estuarine sediment dynamics in the past 10 years. Data from six hydrodynamic stations measured in 2009 indicated that the bedload transport flux has substantially decreased during a tidal cycle compared with that surveyed in 1996. The bedload transport direction also changed from seaward in 1996 to landward in 2009. In addition, the estuarine bed load movement changes were： （a） sediment from areas with water depth being less than 5 m was transported from the sea towards the land; （b） sediment transport from areas with water depth between 5 to 20 m was oriented towards the sea; and （c） sediment from areas with water depth greater than 20 m was conveyed from the sea towards the land.