Abrupt vegetation shifts caused by gradual climate changes in central Asia during the Holocene

doi:10.1007/s11430-017-9047-7

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院新生代地质与环境重点实验室

	Abrupt vegetation shifts caused by gradual climate changes in central Asia during the Holocene
	Zhao, Yan 1,2; Liu, YaoLiang 1,2; Guo, ZhengTang 2,3,4; Fang, KeYan 5; Li, Quan 1; Cao, XianYong 6
刊名	SCIENCE CHINA-EARTH SCIENCES
	2017-07-01
卷号	60 期号:7 页码:1317-1327
关键词	Fossil pollen Vegetation response Threshold effects Holocene climate Central Asia
ISSN号	1674-7313
DOI	10.1007/s11430-017-9047-7
文献子类	Article
英文摘要	Understanding the response of ecosystems to past climate is critical for evaluating the impacts of future climate changes. A large-scale abrupt shift of vegetation in response to the Holocene gradual climate changes has been well documented for the Sahara-Sahel ecosystem. Whether such a non-linear response is of universal significance remains to be further addressed. Here, we examine the vegetation-climate relationships in central Asia based on a compilation of 38 high-quality pollen records. The results show that the Holocene vegetation experienced two major abrupt shifts, one in the early Holocene (Shift I, establishing shift) and another in the late Holocene (Shift II, collapsing shift), while the mid-Holocene vegetation remained rather stable. The timings of these shifts in different regions are asynchronous, which are not readily linkable with any known abrupt climate shifts, but are highly correlated with the local rainfalls. These new findings suggest that the observed vegetation shifts are attributable to the threshold effects of the orbital-induced gradual climate changes. During the early Holocene, the orbital-induced precipitation increase would have first reached the threshold for vegetation "establishment" for moister areas, but significantly later for drier areas. In contrast, the orbital-induced precipitation decrease during the late Holocene would have first reached the threshold, and led to the vegetation "collapse" for drier areas, but delayed for moister areas. The well-known 4.2 kyr BP drought event and human intervention would have also helped the vegetation collapses at some sites. These interpretations are strongly supported by our surface pollen-climate analyses and ecosystem simulations. These results also imply that future climate changes may cause abrupt changes in the dry ecosystem once the threshold is reached.
WOS关键词	NORTH-ATLANTIC CLIMATE ; LAST GLACIAL MAXIMUM ; MOISTURE EVOLUTION ; HIGH-RESOLUTION ; SUMMER MONSOON ; INNER-MONGOLIA ; CHINA ; ECOSYSTEMS ; DYNAMICS ; RESPONSES
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000406020600009
资助机构	National Natural Science Foundation of China(41330105 ; National Key Research and Development Program of China(2016YFA0600501) ; Chinese Academy of Sciences Strategic Priority Research Program(XDB03030000) ; 41690113 ; 41430531) ; National Natural Science Foundation of China(41330105 ; National Key Research and Development Program of China(2016YFA0600501) ; Chinese Academy of Sciences Strategic Priority Research Program(XDB03030000) ; 41690113 ; 41430531) ; National Natural Science Foundation of China(41330105 ; National Key Research and Development Program of China(2016YFA0600501) ; Chinese Academy of Sciences Strategic Priority Research Program(XDB03030000) ; 41690113 ; 41430531) ; National Natural Science Foundation of China(41330105 ; National Key Research and Development Program of China(2016YFA0600501) ; Chinese Academy of Sciences Strategic Priority Research Program(XDB03030000) ; 41690113 ; 41430531)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/42971]
专题	地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者	Zhao, Yan
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 5.Fujian Normal Univ, Coll Geog Sci, Fuzhou 350007, Fujian, Peoples R China 6.Alfred Wegener Inst, Helmholtz Ctr Polar & Marine Res, D-14473 Potsdam, Germany
推荐引用方式 GB/T 7714	Zhao, Yan,Liu, YaoLiang,Guo, ZhengTang,et al. Abrupt vegetation shifts caused by gradual climate changes in central Asia during the Holocene[J]. SCIENCE CHINA-EARTH SCIENCES,2017,60(7):1317-1327.
APA	Zhao, Yan,Liu, YaoLiang,Guo, ZhengTang,Fang, KeYan,Li, Quan,&Cao, XianYong.(2017).Abrupt vegetation shifts caused by gradual climate changes in central Asia during the Holocene.SCIENCE CHINA-EARTH SCIENCES,60(7),1317-1327.
MLA	Zhao, Yan,et al."Abrupt vegetation shifts caused by gradual climate changes in central Asia during the Holocene".SCIENCE CHINA-EARTH SCIENCES 60.7(2017):1317-1327.