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DOI	10.1016/j.gloplacha.2024.104401
	Low-latitude forcing on 4.2 ka event indicated by records in the Asian monsoon region
	Zhou, Xin; Liu, Xiaoyan; Zhan, Tao; Oyebanji, Dorcas B.; Zhang, Jixiao; Tu, Luyao; Jiang, Shiwei
发表日期	2024
ISSN	0921-8181
EISSN	1872-6364
起始页码	235
卷号	235
英文摘要	The 4.2 ka event is an important climatic event of the Holocene that is expected to considerably influence the development of human civilizations. However, the forcing mechanism of the 4.2 ka event remains unclear, with current evidence being divided between high-latitude and low-latitude forcings. The Asian climate system contains strong summer and winter monsoon circulations, and thus the region is ideal for studying high- and lowlatitude climate forcings on 4.2 ka event. In this study, we present a high-resolution pollen record of the past 5000 years from Wudalianchi Crater Lake in northeastern China in the East Asian monsoon region. An evident decrease in broadleaf trees occurred during the 4.2 ka event, suggesting a decrease in summer monsoon rainfall. Well-dated high-resolution pollen, stalagmite 818O, and winter monsoon records were collected to study the possible transportation of high- and low-latitude signals. Most of the pollen records showed significant changes during the 4.2 ka event, while no apparent change was found in winter monsoon records. Meanwhile, more obvious changes in stalagmite 818O records were observed in lower- rather than the higher-latitude regions around 4.2 ka. Our results suggest that the signal of the 4.2 ka event might be transported by low-latitude processes, thus corresponding to a low-latitude forcing.
英文关键词	4.2 ka event; Asian monsoon region; Pollen percentage; Winter monsoon record; Stalagmite 8 18 O; Low -latitude forcing
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001210924500001
来源期刊	GLOBAL AND PLANETARY CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298759
作者单位	Chinese Academy of Sciences; University of Science & Technology of China, CAS; Nanjing Normal University
推荐引用方式 GB/T 7714	Zhou, Xin,Liu, Xiaoyan,Zhan, Tao,et al. Low-latitude forcing on 4.2 ka event indicated by records in the Asian monsoon region[J],2024,235.
APA	Zhou, Xin.,Liu, Xiaoyan.,Zhan, Tao.,Oyebanji, Dorcas B..,Zhang, Jixiao.,...&Jiang, Shiwei.(2024).Low-latitude forcing on 4.2 ka event indicated by records in the Asian monsoon region.GLOBAL AND PLANETARY CHANGE,235.
MLA	Zhou, Xin,et al."Low-latitude forcing on 4.2 ka event indicated by records in the Asian monsoon region".GLOBAL AND PLANETARY CHANGE 235(2024).