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

文献类型：期刊论文

作者Dodson, John1,2,3; Shi, Ge1,2; Lu, Fengyan1,2; Yan, Hong1,2,4
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2021-07-01
卷号573页码:10
关键词XRF Palynology LGM forest Fire absence Erosion history
ISSN号0031-0182
DOI10.1016/j.palaeo.2021.110441
通讯作者Dodson, John(john@ieecas.cn)
英文摘要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.
WOS关键词ASIAN SUMMER MONSOON ; DAJIUHU BASIN ; PEATLAND ; VARIABILITY ; PLATEAU ; PROXY ; LAKE
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
语种英语
WOS记录号WOS:000656517500005
出版者ELSEVIER
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC)
源URL[http://ir.ieecas.cn/handle/361006/16681]  
专题地球环境研究所_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.

入库方式： OAI收割

来源：地球环境研究所

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