Palynoflora and climatic dynamics of the Laizhou Bay of Bohai Sea,North China Plain,since the late middle Pleistocene  

作　　者：Wen-Xia Wang Xiu-Li Zhao Shou-Jun Li Lei Zhang Xiao-Li Wang Xiang-Yu Zhang 

机构地区：[1]College of Life Sciences,Linyi University,Linyi 276000,Shandong Province,China [2]College of Earth Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,Shandong Province,China [3]State Key Laboratory of Palaeontology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 210008,Jiangsu Province,China [4]State Key Laboratory of Lake Science and Environment,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,Jiangsu Province,China

出　　处：《Journal of Palaeogeography》2023年第2期278-295,共18页古地理学报（英文版）

基　　金：supported by the Taishan Scholar Foundation of Shandong Province,China(Grant No.20190954);the National Natural Science Foundation of China(Grant No.32101373);the Shandong Provincial Natural Science Foundation,China(Grant No.ZR2020QC050);the State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,CAS,China(Grant No.123104)。

摘　　要：The coastal plain of Laizhou Bay in Bohai Sea is a transitional area of land-sea interaction.Sediments in this area can bear significant information of sea-level fluctuation,climate change,as well as regional geological setting.Here,in this study,new sporopollen data from three boreholes(GK138,GK111 and GK95)in the coastal plain of Laizhou Bay,Bohai Sea were investigated,and the pollen spectrum since the late middle Pleistocene was established as six sporopollen assemblage zones(Ⅰ-Ⅵ),i.e.,Pinus-Quercus-Artemisia,Gramineae-Artemisia-Chenopodiaceae,Picea-Pinus-QuercusArtemisia,Picea-Pinus-Betula-Gramineae-Artemisia,Picea-Pinus-Cupressaceae-Chenopodiaceae and Pinus-Quercus-Gramineae-Artemisia-Chenopodiaceae.Combining with existing sedimentary successions and detailed radiocarbon dating results of the sediments from the three boreholes,paleovegetation and climatic evolution since the late middle Pleistocene were reconstructed.The findings revealed that climatic changes in this area since the late middle Pleistocene were characterized by alternating cold-arid and warmhumid conditions,which were well correlated with marine isotopic stages(MIS).The present study offers specific insight into the climatic dynamics in the North China Plain since the late middle Pleistocene and provides evidence of a clear link among the palynoflora in the area,the glacial-interglacial period climatedriven sea-level changes,and the marineδ^(18)O records.

关 键 词：Laizhou Bay Late middle Pleistocene Pollen spectrum PALYNOFLORA Climatic dynamics North China Plain 

分 类 号：P534.631[天文地球—第四纪地质学] P532[天文地球—古生物学与地层学] Q914[天文地球—地质学]