Holocene hydro-environmental evolution and its impacts on human occupation in Jianghan-Dongting Basin, middle reaches of the Yangtze River, China

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Abstract

Based on the comprehensive analyses of 18 core profiles’ sedimentary sequences and lithological characteristics in Jianghan-Dongting Basin of the middle reaches of the Yangtze River and the spatial-temporal distribution of archeological sites in this area, we reconstructed the Holocene hydro-environmental evolution, and its relationship with human occupation. The comparison reveals: 11.5-5.5 ka BP, the water level of rivers and lakes in the middle Yangtze River appeared a rising trend, concurrently, under the development of Neolithic culture and rice agricultural activities, human occupation extended from piedmont plain to inner basin plain in the study area. The water level fell in 5.5-4.0 ka BP, meanwhile, the number of human settlements of Qujialing-Shijiahe culture rapidly increased, especially in the inner basin plain. The water level rose again around 4.0 ka B P, floods spread massively in this period, which led to the decline of Shijiahe culture. The main causes for hydro-environmental evolution in the study area are the fluctuation of sea level and the aggradation of fluvio-lacustrine sediments.

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Zhao, C., & Mo, D. (2020). Holocene hydro-environmental evolution and its impacts on human occupation in Jianghan-Dongting Basin, middle reaches of the Yangtze River, China. Journal of Geographical Sciences, 30(3), 423–438. https://doi.org/10.1007/s11442-020-1735-6

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