Evolution of the historical polder landscape in the ancient Danyang wetland, lower Yangtze River, China, during the last 3000 years

Polder is a type of irrigation field unique to the lower Yangtze River of China. It is a product of long-term and ingenuous human modifications of wetland landscapes. In the pre-Qin Period, 3000 years ago, the poldered area of eastern Wuhu city was once a large lake called the ancient Danyang wetlan...

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