Journal of Geographical Sciences

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

HU Xiaosi, WU Li, ZHUANG Yijie, WANG Xinyuan, MA Chunmei, LI Linying, GUAN Houchun, LU Shuguang, LUO Wenjing, XU Ziyi

地理学报(英文版), 2024, 34(10): 2053-2073. DOI: 10.1007/s11442-024-2282-3

Figure 4 The distributions of the poldered fields and historical sites varied across different dynasties, including the Spring and Autumn Period to the Three Kingdoms Period (a), the Jin and Sui Dynasties to the Tang Dynasty (b), the Five Dynasties to the Song Dynasty (c), the Ming Dynasty (d) and Modern Times (e) in the study area

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Figure 1 Location of the ancient Danyang wetland in southeastern Anhui province
Figure 2 Methodological flow chart showing how our research was designed and carried out
Table 1 The newly built area of the poldered fields with a unit of km²/100 yr in the past 3000 years
Figure 3 Change in the areas of the ancient Danyang wetland and poldered fields during the historical periods
Figure 5 Dynamics on the formation and changes of polder landscapes. (a) Summer insolation at 30°N (W/m²) (Berger and Loutre, 1991); (b) Annual mean temperature (°C) (Zhu et al., 2008); (c) Annual precipitation (mm) (Sun et al., 2019); (d) Average chain length value (Liu et al., 2018); (e) Sea level (m) (Xie et al., 2012); (f) Population density (Pop./km²) (Zheng, 2019); (g) Newly built area (km²), (h) Total cumulative area (km²); and (i) Wetland area (km²).
Figure 6 Images of different polder landscape patterns

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