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Intensive Wildfire Associated With Volcanism Promoted the Vegetation Changeover in Southwest China During the Permian-Triassic Transition
Corresponding AuthorZhang, Hua(hzhang@nigpas.ac.cn)
Cai, Yao-feng1,2,3; Zhang, Hua1,2; Feng, Zhuo4; Shen, Shu-zhong5,6
2021-03-04
Source PublicationFRONTIERS IN EARTH SCIENCE
Volume9Pages:15
AbstractPalaeo-wildfire, which had an important impact on the end Permian terrestrial ecosystems, became more intense in the latest Permian globally, evidenced by extensive occurrence of fossil charcoals. In this study, we report abundant charcoals from the upper part of the Xuanwei Formation and the Permian-Triassic transitional Kayitou Formation in the Lengqinggou section, western Guizhou Province, Southwest China. These charcoals are well-preserved with anatomical structures and can be classified into seven distinctive types according to their characteristics. Organic carbon isotopic analyses of both bulk rocks and charcoals show that the delta C-13(org) values in the Kayitou Formation are notably more negative than those in the Xuanwei Formation, with a negative excursion of 4.08 parts per thousand immediately above the volcanic ash bed in the middle of the uppermost coal bed of the Xuanwei Formation. Charcoals with high reflectance values (Ro(mean) = 2.38%) are discovered below the ash bed. By contrast, the reflectance values (Ro(mean) = 1.51%) of the charcoals in the Kayitou Formation are much lower than those of the Xuanwei Formation, indicating the palaeo-wildfire types have changed from crown fires to surface fires, which was probably due to the retrogression of vegetation systems during the extinction. Based on the above evidence, we suppose that palaeo-wildfires became more frequent and more severe since the climate became drier during the latest Permian in Southwest China, and the eventual vegetation changeover of the terrestrial ecosystems in Southwest China could be caused by volcanism.
Keywordcharcoal δ C-13(org) reflectance volcanism late Permian Southwest China
DOI10.3389/feart.2021.615841
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Programs (B) of the Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Programs (B) of the Chinese Academy of Sciences[XDB18000000] ; National Natural Science Foundation of China[U1702242] ; National Natural Science Foundation of China[41502023] ; CAS[QYZDY-SSW-DQC023]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000629757600001
Funding OrganizationStrategic Priority Research Programs (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; CAS
PublisherFRONTIERS MEDIA SA
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/37931
Collection中国科学院南京地质古生物研究所
Corresponding AuthorZhang, Hua
Affiliation1.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
4.Yunnan Univ, Inst Palaeontol, Kunming, Yunnan, Peoples R China
5.Nanjing Univ, State Key Lab Mineral Deposits Res, Nanjing, Peoples R China
6.Nanjing Univ, Sch Earth Sci & Engn, Nanjing, Peoples R China
Recommended Citation
GB/T 7714
Cai, Yao-feng,Zhang, Hua,Feng, Zhuo,et al. Intensive Wildfire Associated With Volcanism Promoted the Vegetation Changeover in Southwest China During the Permian-Triassic Transition[J]. FRONTIERS IN EARTH SCIENCE,2021,9:15.
APA Cai, Yao-feng,Zhang, Hua,Feng, Zhuo,&Shen, Shu-zhong.(2021).Intensive Wildfire Associated With Volcanism Promoted the Vegetation Changeover in Southwest China During the Permian-Triassic Transition.FRONTIERS IN EARTH SCIENCE,9,15.
MLA Cai, Yao-feng,et al."Intensive Wildfire Associated With Volcanism Promoted the Vegetation Changeover in Southwest China During the Permian-Triassic Transition".FRONTIERS IN EARTH SCIENCE 9(2021):15.
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