A 40,000 year record of vegetation, environment and climate change from Chongqing, Central China

doi:10.1016/j.palaeo.2021.110441

IEECAS OpenIR > 古环境研究室

	A 40,000 year record of vegetation, environment and climate change from Chongqing, Central China
	Dodson, John 1,2,3; Shi, Ge 1,2; Lu, Fengyan 1,2; Yan, Hong 1,2,4
通讯作者	Dodson, John(john@ieecas.cn)
	2021-07-01
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	573 页码:10
摘要	Congping is a wetland at about 2100 m asl in Chongqing Province. It is surrounded by a shrubby grassland which grades into a mixed conifer and deciduous woodland. A record based on pollen, microcharcoal and geochemistry has been used to reconstruct an environmental history covering the last approximately 40 kyr BP. The site was wooded throughout the entire record and there were two relatively warm periods; during Marine Isotope 3 (MIS 3) and for the Holocene from about 9 kyr BP. From 27 to 18 kyr BP a gradual cooling occurred and the coldest part of the record was between 22 and 18 kyr BP when a mixed conifer cool temperate deciduous forest occurred, The warmest part of the record lasted from about 9 to 1.5 kyr BP when mixed evergreen and deciduous forest occurred. The broad pattern of changes is in accord with pollen records from Dajiuhu in Hubei, and demonstrates that this was a regional signal. A moist central China at Last Glacial Maximum (LGM) shows that the East Asian Summer Monsoon was delivering enough moisture on the mainland to sustain forest cover, even at 2120 m asl. The large-scale changes are interpreted as relating to changes in Earth's orbital parameters and sea-level changes in the South China Sea which had an impact on moisture delivery into central China. It is surmised that the westerlies which created dry climates in northeastern China trapped the summer Monsoon influence enough to keep central China moist. The Younger Dryas (YD) is present in the weathering parameters as evident in several changes in elemental abundance delivered to the sediments. The Congping record shows no clear evidence of human impact on its vegetation, and there were no local fires to have caused any vegetation changes. In the last 1.5 kyr BP a slight cooling caused a rise in conifers, a decline in broad-leaved tree taxa and increased weathering rates.
关键词	XRF Palynology LGM forest Fire absence Erosion history
DOI	10.1016/j.palaeo.2021.110441
关键词[WOS]	ASIAN SUMMER MONSOON ; DAJIUHU BASIN ; PEATLAND ; VARIABILITY ; PLATEAU ; PROXY ; LAKE
收录类别	SCI ; SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; National Natural Science Foundation of China (NSFC)[41877399] ; National Natural Science Foundation of China (NSFC)[41991250]
WOS研究方向	Physical Geography ; Geology ; Paleontology
项目资助者	Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC)
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000656517500005
出版者	ELSEVIER
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/16682
专题	古环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Dodson, John
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 3.Univ Wollongong, Sch Earth Atmospher & Life Sci, Wollongong, NSW 2250, Australia 4.Qingdao Natl Lab Marine Sci & Technol, Open Studio OCCEC, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Dodson, John,Shi, Ge,Lu, Fengyan,et al. A 40,000 year record of vegetation, environment and climate change from Chongqing, Central China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2021,573:10.
APA	Dodson, John,Shi, Ge,Lu, Fengyan,&Yan, Hong.(2021).A 40,000 year record of vegetation, environment and climate change from Chongqing, Central China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,573,10.
MLA	Dodson, John,et al."A 40,000 year record of vegetation, environment and climate change from Chongqing, Central China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 573(2021):10.