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射阳湖历史上曾是江苏境内著名的大湖。历史时期,湖区经历了浅水海湾—古泻湖—淡水湖泊—沼泽性湖泊—平原沼泽的演变模式。春秋以前,本区是里下河浅水海湾的一部分;春秋至唐代,本区由古泻湖逐步演变为淡水湖;南宋以来,1128年黄河夺淮以后,大量泥沙进入本区,湖区淤积迅速,成为沼泽性湖泊,加之人类开发活动的深刻影响,射阳湖逐渐演变为里下河平原的一部分。
Sheyang Lake was once the famous Great Lakes in Jiangsu Province. During the historical period, the lake area experienced the evolutionary model of shallow bay - ancient lagoon - freshwater lake - swamp lake - plain swamp. Before spring and autumn, the area was a part of the Lixiahe shallow water bay. From the Spring and Autumn to the Tang Dynasty, the area gradually evolved from ancient lagoon to freshwater lake. Since the Southern Song Dynasty, a large amount of sediment entered the area after the Yellow River took over the Huai River in 1128, , A marsh of lakes, combined with the profound impact of human development activities, Sheyang Lake gradually evolved into a part of the Lixiahe Plain.