由远及近简述历史时期和本世纪上半叶南汇岸滩的时空变化规律,着重分析了近30年芦潮港所在的南汇南滩水下滩坡的变化特征。这种变化与长江口河势和南槽分流分沙情势的变化密切相关。根据目前长江口河势的发展情况,芦潮港岸段水下滩坡的淤积趋势仍将持续,但其强度不会达到五十年代的鼎盛状态。 From the near and the recent description of the temporal and spatial variation of Nanhui Beach during the historical period and the first half of this century, the changing characteristics of the underwater beach slope of Nanhui South Beach, where Luchagan Harbor is located, are emphatically analyzed. This change is closely related to the change of the situation of the diversion and sediment in the Yangtze River estuary and the southern channel. According to the current development of the river mouth in the Yangtze River estuary, the deposition trend of the underwater beach slope in Luchao Port will continue, but its intensity will not reach its peak in the 1950s.