Changes in Paleovegetation and Paleoclimate in China since the Late Middle Pleistocene: A Case Study of the Dajiuhu Basin

Liwei Wu, Xinling Li, Qinghai Xu, Manyue Li, Qiufeng Zheng, Maoheng Zhang, Dandan Wang and Zhiguo He
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Liwei Wu: Hebei Key Laboratory of Environmental Change and Ecological Construction, Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, College of Resources and Environment Science, Hebei Normal University, Shijiazhuang 050024, China
Xinling Li: Hebei Key Laboratory of Environmental Change and Ecological Construction, Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, College of Resources and Environment Science, Hebei Normal University, Shijiazhuang 050024, China
Qinghai Xu: Hebei Key Laboratory of Environmental Change and Ecological Construction, Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, College of Resources and Environment Science, Hebei Normal University, Shijiazhuang 050024, China
Manyue Li: Institute of Nihewan Archaeology, Hebei Normal University, Shijiazhuang 050024, China
Qiufeng Zheng: College of Geography Science, Nanjing Normal University, Nanjing 210046, China
Maoheng Zhang: College of Geography Science, Nanjing Normal University, Nanjing 210046, China
Dandan Wang: Hebei Key Laboratory of Environmental Change and Ecological Construction, Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, College of Resources and Environment Science, Hebei Normal University, Shijiazhuang 050024, China
Zhiguo He: Hebei Key Laboratory of Environmental Change and Ecological Construction, Hebei Technology Innovation Center for Remote Sensing Identification of Environmental Change, College of Resources and Environment Science, Hebei Normal University, Shijiazhuang 050024, China

Sustainability, 2021, vol. 13, issue 9, 1-13

Abstract: The East Asian monsoon system is an important part of global atmospheric circulation; however, records of the East Asian monsoon from different regions exhibit different evolutionary rhythms. Here, we show a high-resolution record of grain size and pollen data from a lacustrine sediment core of Dajiuhu Lake in Shennongjia, Hubei Province, China, in order to reconstruct the paleovegetation and paleoeclimate evolution of the Dajiuhu Basin since the late Middle Pleistocene (~237.9 ka to the present). The results show that grain size and pollen record of the core DJH-2 are consistent with the δ 18 O record of stalagmites from Sanbao Cave in the same area, which is closely related to the changes of insolation at the precessional (~20-kyr) scale in the Northern Hemisphere. This is different from the records of the Asian summer monsoon recorded in the Loess Plateau of North China, which exhibited dominant 100-kyr change cyclicities. We suggest that the difference between paleoclimatic records from North and South China is closely related to the east–west-oriented mountain ranges of the Qinling Mountains in central China that blocked weakened East Asia summer monsoons across the mountains during glacial periods.

Keywords: Asian summer monsoon; precessional; Dajiuhu; pollen; late Middle Pleistocene (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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