The most important impact of the human activities on the estuarine dynamics of the Modaomen estuary lies in altering the barotropic force, which decreases generally in recent decades.

• 人类活动对磨刀门河口动力最主要的影响是改变了正压力项的大小，近几十年来，磨刀门河口正压力呈减小的趋势。