气候变化领域集成服务门户(CCPortal): Dust storms in northern China and their significance for the concept of the Anthropocene

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DOI	10.1007/s11430-021-9889-8
	Dust storms in northern China and their significance for the concept of the Anthropocene
	Liu, Jianbao; Chen, Jie; Chen, Shengqian; Yan, Xinwei; Dong, Haoran; Chen, Fahu
通讯作者	Liu, JB ; Chen, SQ (通讯作者)
发表日期	2022
ISSN	1674-7313
EISSN	1869-1897
起始页码	921
结束页码	933
卷号	65 期号:5
英文摘要	A key scientific issue in the study of the Anthropocene is the determination of the corresponding stratigraphic marker in geological archives. The arid and semi-arid regions of Asia are the second largest dust source on Earth, and their release, transport and deposition of dust affect global climate change, as well as marine and terrestrial biogeochemical cycles. Over the past similar to 2000 years, human activity has outpaced natural climatic variability as the dominant control of dust storms in northern China. Thus, exploring the potential of anthropogenic Asian dust as a marker of the Anthropocene and its impacts on lake ecosystems may contribute to an improved definition of the characteristics and timing of the Anthropocene. In this context, we measured spectrally-inferred chlorophyll a from the sediments of an undisturbed alpine lake in northern China, and compared the results with dust storm data from the same cores and with regional climatic records. Asian dust is a widely distributed, globally significant signal of human activity, and it is also well preserved in various geological archives; hence, we propose anthropogenic dust can be considered as a potential marker of the Anthropocene. Anthropogenic dust signals in stratigraphic records during the past similar to 2000 years differ substantially from those during the early and middle Holocene, which demonstrates that, at least since similar to 2000 years ago, human activity has exceeded the natural forcing of dust transport in northern China. We therefore propose that there are spatial and temporal differences in the onset of the Anthropocene, as defined by anthropogenic dust deposition, which is therefore time-transgressive. Our spectrally-inferred chlorophyll a record is consistent with dust storm activity over the past similar to 2000 years (except since the 1950s), suggesting that anthropogenic dust storms were the dominant control on lake primary production. Prior to the 1950s the interactions of the East Asian summer monsoon (EASM), human activity, dust storms and lake ecosystems resulted in a shift from a pattern in which human activity outpaced the EASM as the dominant control on the Earth surface system to one in which, after the 1950s, human activity became the dominant factor influencing the EASM and the Earth surface system. In the future this pattern may trend towards one in which there is the sustainable development of humans and the environment. We suggest that, in order to better understand the interactions of human activity, climate and environment, future research on the Anthropocene should focus on its time-transgressive characteristics and regional differences, in addition to the Great Acceleration.
关键词	SUMMER MONSOON CLIMATE-CHANGE LAKE RECORD PHOSPHORUS DEPOSITION EVOLUTION RESPONSES NITROGEN GONGHAI
英文关键词	Anthropocene; Stratigraphic marker; Dust storms; Lake primary production; Time-transgressive; Great Acceleration
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000773853200001
来源期刊	SCIENCE CHINA-EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260574
推荐引用方式 GB/T 7714	Liu, Jianbao,Chen, Jie,Chen, Shengqian,et al. Dust storms in northern China and their significance for the concept of the Anthropocene[J]. 中国科学院青藏高原研究所,2022,65(5).
APA	Liu, Jianbao,Chen, Jie,Chen, Shengqian,Yan, Xinwei,Dong, Haoran,&Chen, Fahu.(2022).Dust storms in northern China and their significance for the concept of the Anthropocene.SCIENCE CHINA-EARTH SCIENCES,65(5).
MLA	Liu, Jianbao,et al."Dust storms in northern China and their significance for the concept of the Anthropocene".SCIENCE CHINA-EARTH SCIENCES 65.5(2022).