Prolonged cooling interrupted the Bronze Age cultures in northeastern China 3500 years ago
Prolonged cooling interrupted the Bronze Age cultures in northeastern China 3500 years ago
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3500年前的长期变冷中断了中国东北地区的青铜时代文化
DOI：
10.1016/j.palaeo.2021.110461
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Jiahao Li
中科院分区：
文献类型：
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作者：
Yanhong Zheng;Shi-Yong Yu;Tongyu Fan;Clive Oppenheimer;Xuefeng Yu;Zhao Liu;Feng Xian;Zhen Liu;Jianyong Li;Jiahao Li
由于缺乏可靠的气候代理记录，人们对青铜时代气候变化在中国东北地区社会转型中的作用知之甚少。在这里，我们报告了基于中国东北（东北）金川泥炭核心的支链甘油二烷基甘油四醚分布的长达 3600 年的气候记录。我们的记录显示大约 3.5-3.0ka 之间持续变冷，这与社会从定居生活方式向移动生活方式的转变相吻合。比较现有记录表明，这一事件代表了半球范围的降温，可能是由长期厄尔尼诺现象驱动的。夏家店下层时期的低温对农业社会不利，迫使人们南下进入华北和中原地区，导致文化荒凉，并在大约250年的时间里逐渐被牧民占据。我们的研究结果强调，在理解东北亚史前文明的演变时，需要考虑气候动态与社会动荡的相互作用。
The role of climatic change in the social transition in NE China during the Bronze Age is poorly understood due to the lack of reliable climate proxy records. Here we report a 3600-yr-long climate record based on branched glycerol dialkyl glycerol tetraether distributions in the Jinchuan peat core, Northeastern (NE) China. Our record shows a persistent cooling between ca.3.5–3.0 ka, which coincides with the societal transition from a settled to a mobile lifestyle. Comparing existing records suggests that this event represents a hemispherical-scale cooling probably driven by the prolonged El Niño conditions. The low temperatures caused unfavorable conditions for the agriculture-based society during the Lower Xiajiadian period and thus drove people to flee southward into the North China and Central China Plains, leading to a culturally desolated area that was gradually occupied by pastoralists in about 250 years. Our results highlight the need to consider the interplay of climatic dynamics with social upheaval in understanding the evolution of prehistorical civilization in NE Asia.