Multi-proxy evidence of environmental change related to collapse of the Liangzhu Culture in the Yangtze Delta,China  

作　　者：Keyang HE Houyuan LU Guoping SUN Xiang JI Yonglei WANG Kaikai YAN Xinxin ZUO Jiangping ZHANG Bin LIU Ningyuan WANG 

机构地区：[1]Key Laboratory of Cenozoic Geology and Environment,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,100029,China [2]Innovation Academy for Earth Science,Chinese Academy of Sciences,Beijing,100029,China [3]Center for Excellence in Tibetan Plateau Earth Sciences,Chinese Academy of Sciences,Beijing,100101,China [4]College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,100049,China [5]Zhejiang Provincial Institute of Cultural Relics and Archaeology,Hangzhou,310014,China [6]State Key Laboratory for Subtropical Mountain Ecology of the Ministry of Science and Technology and Fujian Province,Fujian Normal University,Fuzhou,350007,China

出　　处：《Science China Earth Sciences》2021年第6期890-905,共16页中国科学（地球科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.41830322,41902187);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB26000000);the China Postdoctoral Science Foundation(Grant No.2020M670444)。

摘　　要：The Liangzhu Culture(5300–4300 cal.a BP)has been regarded as the culmination of the Neolithic Age in the Yangtze Delta and as an archaic state.However,the reason behind the collapse of the Liangzhu Culture remains controversial.Some scholars attributed it to social conflicts or foreign invasions,while others suggested that environmental deterioration,such as cold episodes,inundation and palaeo-typhoon events,disrupted the civilization.Notably,the yellowish silty sediments widely overlying the Liangzhu group sites have been presumed to be one of the vital clues to resolving these issues.The process and cause of their formation are key to understanding the decline in the Liangzhu Culture.In this study,two typical profiles composed of the Liangzhu cultural layer and yellowish silty sediments were collected in Liangzhu Ancient City.Multiple proxies,including pollen,phytoliths and diatoms,along with radiocarbon and optically stimulated luminescence dating and synthesized geochemical evidence from different sediments,were applied to reconstruct ecological and hydrological changes and discuss their linkage to cultural collapse.The regional ecology was typical freshwater wetlands during 4800–4400 cal.a BP,which facilitated rice farming and large-scale architectural engineering in Liangzhu Ancient City.Evidence from microfossils and dating of the yellowish silty sediments indicated that Liangzhu Ancient City was significantly affected by seawater after abandonment during 4300–3400 cal.a BP.Furthermore,geochemical evidence,including trace element and Sr-Nd isotopic compositions,suggested that the primary provenance of the yellowish silt was a mixture of sediments from the Qiantang River,East China Sea,Yangtze River and Yellow River,which had been transported to Liangzhu Ancient City by the Yellow Sea Coastal Current and a marine transgression.Therefore,based on evidence from archaeological sites and numerical simulation in the Yangtze Delta,it was supposed that the short-term accelerated relative sea-level rise at ap

关 键 词：Collapse of the Liangzhu Culture Yangtze Delta Yellowish silt MICROFOSSILS GEOCHEMISTRY 

分 类 号：P512.2[天文地球—地质学]