历史时期射阳湖演变模式研究

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。

Study on Models of the Changes About Sheyang Lake in Historical Period

In historical period, Sheyang lake was a famous lake in Jiangsu. It had experienced the “shallow bay-old lagoon-lake-marshland-plain” in historical periods. It was one part of Lixiahe shallow bay before Chunqiu Dynasties. An old lagoon was formed during Chunqiu to Tang Dynasties ; later, turned into a freshwater lake gradually. Since Nansong Dynasty,a great quantity of sand was carried into the lake and piled up there swiftly, as the Yellow River captured the Huaihe River in 1128. A lot of marshlands were formed in the lake .In addition to human activities, it became a part of the Lixiahe Plain.