Middle Cretaceous pCO(2) Variation in Yumen, Gansu Province and its Response to the Climate Events
Lei Xiangtong1,2,3; Du Zhen1,2; Du Baoxia1,2,3; Zhang Mingzhen4; Sun Bainian1,2
2018-04
发表期刊ACTA GEOLOGICA SINICA-ENGLISH EDITION
ISSN1000-9515
卷号92期号:2页码:801-813
摘要

The palaeo-atmospheric CO2 concentration (pCO(2)) variation in the Yumen, Gansu Province during the middle Cretaceous has been reconstructed using the newly established plant photosynthetic gas exchange mechanistic model, and the results show that the pCO(2) values are in the range of about 550-808 ppmv. The present pCO(2) values are higher than the pCO(2) results (531-641 ppmv) of the previous study according to the Recent standardization of the stomatal ratio method, and much lower than the pCO(2) results (882-1060 ppmv) according to the Carboniferous standardization of the stomatal ratio method(.) The present pCO(2) variation is not only within the error range of GEOCARB II and GEOCARB III but also is similar to the reconstructed results based on the biochemistry and carbon isotope models. Besides, the present Brachyphyllum specimens were collected from four consecutive horizons of the upper Zhonggou Formation of the Hanxia Section, and the reconstructed pCO(2) exhibits the reconstructed pCO(2) exhibits a decline trend during the late Aptian to early Albian. This decline variation is probably associated with the Oceanic Anoxic Events (OAE1b) and the Cold snap event. With the combination of pCO(2) during the Albian to Cenomanian recovered by the plant photosynthetic gas exchange mechanistic model, the pCO(2) showed a prominent increase during the late Aptian to early Cenominian, which indicates a response to the greenhouse warming during the middle Cretaceous. Therefore, the mechanical model of the plant photosynthetic gas exchange shows a relatively strong accuracy in the reconstruction of the pCO(2) and can reflect a strong relation between the atmospheric CO2 concentrations and climatic events.

关键词Pco(2) Greenhouse Climate Plant Photosynthetic Gas Exchange Mechanical Model Oae1b Cold Snap
DOI10.1111/1755-6724.13555
收录类别SCI
语种英语
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000437257000021
出版者WILEY
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/22663
专题中国科学院南京地质古生物研究所
作者单位1.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China;
2.Lanzhou Univ, Key Lab Mineral Resources Western China Gansu Pro, Lanzhou 730000, Gansu, Peoples R China;
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China;
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources, Gansu Prov Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China
第一作者单位中国科学院南京地质古生物研究所
推荐引用方式
GB/T 7714
Lei Xiangtong,Du Zhen,Du Baoxia,et al. Middle Cretaceous pCO(2) Variation in Yumen, Gansu Province and its Response to the Climate Events[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2018,92(2):801-813.
APA Lei Xiangtong,Du Zhen,Du Baoxia,Zhang Mingzhen,&Sun Bainian.(2018).Middle Cretaceous pCO(2) Variation in Yumen, Gansu Province and its Response to the Climate Events.ACTA GEOLOGICA SINICA-ENGLISH EDITION,92(2),801-813.
MLA Lei Xiangtong,et al."Middle Cretaceous pCO(2) Variation in Yumen, Gansu Province and its Response to the Climate Events".ACTA GEOLOGICA SINICA-ENGLISH EDITION 92.2(2018):801-813.
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