针对三峡工程投运后江湖关系的变化是影响长江中下游治理、水资源开发利用与保护策略的关键,分析了荆江河道冲刷、荆江三口分流、城陵矶水位及洞庭湖区冲淤的变化,基于三峡工程投运后的实测资料,指出长江中下游江湖关系变化的复杂性是长期研究的焦点,并评价了前人研究结果。 Aiming at the changes of relationship between rivers and lakes after the Three Gorges Project is put into operation, it is the key to control the middle and lower reaches of the Yangtze River and to develop and utilize water resources. The changes of Jingjiang river scour, the diversion of Jingjiang River, the water level of Chenglingji and the erosion and deposition of Dongting Lake are analyzed. The measured data after the Three Gorges Project put into operation indicate that the complexity of the changes in the relations between rivers and lakes in the middle and lower reaches of the Yangtze River is the focus of long-term research and the results of previous studies were evaluated.