气候变化领域集成服务门户(CCPortal): Potential Production of Carbon Gases and Their Responses to Paleoclimate Conditions: An Example From Xiaolongtan Basin, Southeast Tibetan Plateau

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DOI	10.3389/feart.2021.582062
	Potential Production of Carbon Gases and Their Responses to Paleoclimate Conditions: An Example From Xiaolongtan Basin, Southeast Tibetan Plateau
	Wang, Gen; Wang, Yongli; Wei, Zhifu; Sun, Zepeng; He, Wei; Ma, Xueyun
通讯作者	Wei, ZF (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China. ; Wei, ZF (通讯作者)，Key Lab Petr Resources, Lanzhou, Gansu, Peoples R China. ; Wang, YL (通讯作者)，Chinese Acad Sci, Key Lab Cenozo Geol & Geophys, Beijing, Peoples R China. ; Wang, YL (通讯作者)，CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China.
发表日期	2021
EISSN	2296-6463
卷号	9
英文摘要	Uplift of the Tibetan Plateau plays a significant and lasting role in the variations of climate conditions and global carbon cycle. However, our knowledge is limited due to the lack of long-sequence records revealing rates of CO2 and CH4 production, hampering our understanding of the relationship between paleoclimatic conditions, carbon cycling and greenhouse gas flux. Here, we present a combination of paleoclimate records and low-temperature thermal simulation results from sediments of the Xiaolongtan Basin at the southeastern margin of the Qinghai-Tibetan Plateau, spanning the late Miocene (14.1 similar to 11.6 Ma). The n-alkane-derived proxies suggested that the sources of organic matter were obviously different: a mixed source including lower organisms and terrestrial higher plants for the Dongshengqiao Formation from 14.1 to 12.6 Ma, and a predominant contribution from terrestrial higher plants for Xiaolongtan Formation between 12.6 and 11.6 Ma. The paleoclimate was generally warm and humid as reflected by the lipid biomarkers, consistent with previous studies. In addition, the carbon gases (including CO2 and hydrocarbon gases) generated by the low-temperature thermal simulation experiments indicated a production rate of CO2 and CH4 were as high as 88,000 ml/kg rock and 4,000 ml/kg rock, respectively, implying there were certain amounts of carbon gases generated and released into the atmosphere during their shallow burial stage. Besides, the calculated production rate of carbon gases and the estimated burial flux of organic carbon varied in response to the variations of paleoclimate conditions. Based on these observations, we propose that the climate conditions predominantly controlled the formation and accumulation of organic matter, which consequently affected the production of carbon gases and burial flux of organic carbon. The results presented here may provide a significant insight into the carbon cycle in the southeast of the Tibetan Plateau.
关键词	ORGANIC-CARBON N-ALKANES LIPID BIOMARKERS LAKE-SEDIMENTS CLIMATE-CHANGE BURIAL CHINA GEOCHEMISTRY YUNNAN DISTRIBUTIONS
英文关键词	lipid biomarker; low-temperature thermal simulation; carbon cycle; burial rates of organic carbon; late Miocene
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000649796200001
来源期刊	FRONTIERS IN EARTH SCIENCE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254431
作者单位	[Wang, Gen; Wei, Zhifu; He, Wei; Ma, Xueyun] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Wang, Gen; Wei, Zhifu] Key Lab Petr Resources, Lanzhou, Gansu, Peoples R China; [Wang, Yongli] Chinese Acad Sci, Key Lab Cenozo Geol & Geophys, Beijing, Peoples R China; [Wang, Yongli] CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China; [Sun, Zepeng] Shanxi Agr Univ, Coll Resources & Environm, Jinzhong, Peoples R China; [He, Wei; Ma, Xueyun] Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Gen,Wang, Yongli,Wei, Zhifu,et al. Potential Production of Carbon Gases and Their Responses to Paleoclimate Conditions: An Example From Xiaolongtan Basin, Southeast Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,9.
APA	Wang, Gen,Wang, Yongli,Wei, Zhifu,Sun, Zepeng,He, Wei,&Ma, Xueyun.(2021).Potential Production of Carbon Gases and Their Responses to Paleoclimate Conditions: An Example From Xiaolongtan Basin, Southeast Tibetan Plateau.FRONTIERS IN EARTH SCIENCE,9.
MLA	Wang, Gen,et al."Potential Production of Carbon Gases and Their Responses to Paleoclimate Conditions: An Example From Xiaolongtan Basin, Southeast Tibetan Plateau".FRONTIERS IN EARTH SCIENCE 9(2021).