Wang, Xiaohui1; Wang, Longsheng1,2,3; Hu, Shouyun4; Yu, Ge4; Wang, Qing1
; Zhang, Zhenhua1; Ma, Mingming5; Liao, Mengna4; Gao, Lei4发表期刊OPEN GEOSCIENCES
ISSN2391-5447
2021-05-13
卷号13期号:1页码:505-516
关键词Yangtze River deltagrain sizeend-member modeling analysisEast Asian monsoon
DOI10.1515/geo-2020-0251
通讯作者Wang, Longsheng(52wls@163.com)
英文摘要Paleoenvironmental research is critical for understanding delta evolution processes and managing delta sustainability, particularly for delta experiencing significant recent fluvial sediment discharge. Based on other previously reported optically stimulated luminescence (OSL) data, Holocene environmental changes of the Yangtze River delta in response to climate fluctuations and human activities were reviewed on the basis of grain-size analyses of core YZ07. The results of grain-size and end-member analysis (EMA) provide a detailed history of East Asian monsoon variability and environmental changes since similar to 10,000 cal year B.P. The lower median values (Md) and sand content reflect relatively cool and dry climate conditions between 10,000 and 9,570 cal year B.P. During the early Holocene (9,570-7,630 cal year B.P.), the highest Md values and sand contents and the lowest end member 2 (EM2) contents suggest the Holocene transgression. The increased Md values and sand contents indicate that the climate conditions were warm and wet during the mid-Holocene thermal optimum. From 4,690 to 4,150 cal year B.P., the climate was cool and dry, corresponding to the cool event, as indicated by the finer grain size. Subsequently, between 4,150 and 2,850 cal year B.P., the grain size derived from the Md value and sand content increased, which reflect a wet and warm episode. The climate, which shifted from warm and wet to cool and dry between 2,850 and 1,020 cal year B.P., may have caused a reduction in the sand contents and Md values. After 1,020 cal year B.P., the lowest values of Md and Standard deviation (Sd) and the highest contents of EM2 and clay suggest that the Yangtze River delta has been severely affected by anthropogenic activity. The variability of the East Asian monsoon intensity in the Yangtze River delta strongly correlates with other East Asian monsoon paleoclimate records in China. These results are important for investigations into the interactions between regional systems and global change in monsoonal climatic regions and can provide an example of the evolution of a large scale geomorphic feature resulting from river-sea interaction.
资助机构National Natural Science Foundation of China; Humanity and Social Science Foundation of Ministry of Education of China; open foundation of CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, YICCAS; open foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS; Natural Science Foundation of Shandong Province; Chinese Academy of Sciences Visiting Professorship for Senior International Scientists
收录类别SCI
语种英语
关键词[WOS]HUANGHE YELLOW-RIVER; LAKE DONGGI CONA; TIBETAN PLATEAU; CLIMATE-CHANGE; UNFLOCCULATED SEDIMENTS; ENVIRONMENTAL-CHANGE; LEVEL STATUS; HOLOCENE; CHINA; SEA
研究领域[WOS]Geology
WOS记录号WOS:000683473700001
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/29610
专题中科院海岸带环境过程与生态修复重点实验室
海岸带生物学与生物资源利用重点实验室_海岸带生物资源高效利用研究与发展中心
通讯作者Wang, Longsheng作者单位1.Ludong Univ, Coast Inst, Yantai 264025, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
4.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China
5.Fujian Normal Univ, Inst Geog, Fuzhou 350007, Peoples R China
推荐引用方式
GB/T 7714Wang, Xiaohui,Wang, Longsheng,Hu, Shouyun,et al. East Asian monsoon during the past 10,000 years recorded by grain size of Yangtze River delta[J]. OPEN GEOSCIENCES,2021,13(1):505-516.
APAWang, Xiaohui.,Wang, Longsheng.,Hu, Shouyun.,Yu, Ge.,Wang, Qing.,...&Gao, Lei.(2021).East Asian monsoon during the past 10,000 years recorded by grain size of Yangtze River delta.OPEN GEOSCIENCES,13(1),505-516.
MLAWang, Xiaohui,et al."East Asian monsoon during the past 10,000 years recorded by grain size of Yangtze River delta".OPEN GEOSCIENCES 13.1(2021):505-516.
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