Evidence for climate instability during the Younger Dryas interval in the Hengduan Mountains, Yunnan, southwestern China

doi:10.1016/j.palaeo.2020.109798

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	Evidence for climate instability during the Younger Dryas interval in the Hengduan Mountains, Yunnan, southwestern China
	Yao, Yi-Feng ; Wang, Xia 5; Qin, Feng 1; Wortley, Alexandra H.; Li, Su-Ping ; Blackmore, Stephen 6; Li, Cheng-Sen ; Wang, Yu-Fei
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2020
卷号	554
关键词	Biodiversity Global warming Holocene Palaeoclimatology Vegetation
ISSN号	0031-0182
DOI	10.1016/j.palaeo.2020.109798
文献子类	Article
英文摘要	The Younger Dryas (YD) is the most recent abrupt climatic event recognized during the transition from the last glaciation to the Holocene. Growing evidence from the middle and high latitudes of Europe and North America shows that the climate within the YD event was highly unstable. Until recently, however, climate instability during this event has received little attention elsewhere in the world. Here we present evidence of a climatically unstable YD based on pollen-climate transfer function and REDFIT spectral analysis of pollen data from Haligu in the Hengduan Mountains of southwestern China, a low latitude temperate biodiversity hotspot. Our data show that the climate fluctuated significantly during the YD, with three warm peaks recognized at 11.5, 11.7 and 12.3 cal kyr BP. In particular, we estimate a gradual rise in mean annual temperature by 3.7 degrees C between the end of the YD and the early Holocene (11.2-10.9 cal kyr BP). In response to this, the subalpine conifer forest dominated by Picea and Abies may have migrated about 610 m upwards. We also detected that the climate fluctuations during the YD-Holocene transition show significant centennial periodicities of 76 yr, 84 yr, 91 yr, 95 yr, and 638 yr. The former four cycles are possibly related to the Gleissberg (around 80 yr) solar cycle, which was also detected in the Hongyuan peat, the PC-6 core of the East China Sea and the GISP2 ice core. These new findings enhance our understanding of millennial-scale abrupt climate events which may be of great significance in predicting the impact of future climate change on mountainous ecosystems in southwestern China. The warming at the end of the YD may provide a potential analog for global warming in the near future, during which the upward migration of vegetation zones will likely lead to the loss of habitat for threatened species. We therefore should take action to restore habitats and provide protected areas for species at risk.
学科主题	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
电子版国际标准刊号	1872-616X
出版地	AMSTERDAM
WOS关键词	HIGH-RESOLUTION ; LAST DEGLACIATION ; VEGETATION RESPONSES ; MONSOON RECORD ; HOLOCENE ; REGION ; SEASONALITY ; DELTA-O-18 ; SEDIMENTS ; TROPICS
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000552137300010
资助机构	Strategic Priority Research Program of Chinese Academy of SciencesChinese Academy of Sciences [XDB26000000] ; National Key R & D Program of China [2017YFC0803803] ; Open Research Foundation of State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences [LSEB2020-1, 2020-4] ; Digital Environment Archaeology Specially-Appointed Researcher of Henan [200501002] ; Basic Scientific Research of the Digital Environment Archaeology [200601016] ; China Scholarship CouncilChina Scholarship Council [201204910043] ; Scottish Government Rural and Environmental Science ; Scottish Government Analytical Services Division
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/21662]
专题	系统与进化植物学国家重点实验室
作者单位	1.Henan Acad Sci, Inst Geog Sci, Zhengzhou 450052, Peoples R China 2.Royal Bot Garden Edinburgh, 20a Inverleith Row, Edinburgh EH3 5LR, Midlothian, Scotland 3.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Yao, Yi-Feng,Wang, Xia,Qin, Feng,et al. Evidence for climate instability during the Younger Dryas interval in the Hengduan Mountains, Yunnan, southwestern China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,554.
APA	Yao, Yi-Feng.,Wang, Xia.,Qin, Feng.,Wortley, Alexandra H..,Li, Su-Ping.,...&Wang, Yu-Fei.(2020).Evidence for climate instability during the Younger Dryas interval in the Hengduan Mountains, Yunnan, southwestern China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,554.
MLA	Yao, Yi-Feng,et al."Evidence for climate instability during the Younger Dryas interval in the Hengduan Mountains, Yunnan, southwestern China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 554(2020).