|On the origin and change of sheyang lake in the human history period
Nanjing Normal University
|Sheyang Lake was once in ancientry the largest lake in the north Jiangsu Plain. It was deep and vast, and swarllowed the water drainaging from Yongzou, Xinghua, Gaoyou, Baoying, Taizou, Yaogchen regions and flowed eastward to the Yellow sea. From the Spring and Autumn period to the North Song Dynasty, it was the transport way between the Changjiang River and the Hucihe River. After 1128 A.D.(the Huanghe River flooded southward and deprived the lower Harihc River), the Huanghe River overflowed and bursted frequently, and carried enomous silt and sand southward and deposited in the Lixiahe area with the deposits accummalating, Sheyang Lake almostly changed into a plain during the period from the end of Ming Dynasty to the middle of Qing Dynasty. By now, the remains of Sheyong Lake are only Majadong pool and the sheyongRiver which flows into the Yellow Sea. According to the synthetic analysis based on the micro-landform, drill data.lithological character and lithofacies, sporc-pollen, the fossil of marine organisms and micro-paleorganisms by physiographers, it is affirmed that Sheyong Lake was a fresh water lake developed from a lagoon during Holocene higher sea level period in North Jiangsu plain.