NIGPAS OpenIR
Wildfires and deforestation during the Permian-Triassic transition in the southern Junggar Basin, Northwest China
Cai, Yao-feng(蔡垚峰)1,2,3; Zhang, Hua(张华)1,2,3; Cao, Chang-qun(曹长群)1,2,3; Zheng, Quan-feng(郑全峰)1,2; Jin, Chuan-fang(金传芳)1,2; Shen, Shu-zhong4
2021-07-01
Source PublicationEARTH-SCIENCE REVIEWS
ISSN0012-8252
Volume218Pages:15
Abstract

Despite a continuous increase in fossil charcoal records from Late Palaeozoic deposits, which are used as direct evidence for palaeo-wildfires, detailed studies on the charcoal particles are still rare. To investigate the relationship between wildfire activities and the evolution of the terrestrial ecosystem at the end of the Permian, we report on the charcoal recovered from the classic non-marine Permian-Triassic Dalongkou section in Jimsar, Xinjiang Uygur Autonomous Region, Northwest China. Allochthonous and parautochthonous charcoals, identified by both macroscopic and microscopic morphological techniques, were collected from several stratigraphic horizons. These charcoals were classified into 11 categories (which do not represent the taxonomic group) according to their anatomical characteristics and gross morphology. The reflectance values of the charcoals indicate that surface fires were dominant throughout the sequence, with fire regime changing in a distinct interval. The distribution and abundance of all categories and the reflectance of the charcoals suggest that the intensity of wildfires increased in the upper part of the Guodikeng Formation. This trend coincides with the Hg/TOC peaks and a conspicuous excursion in the organic carbon isotope (delta C-13(org)) values, which may indicate volcanic activities and the disturbance of the carbon cycle that occurred during the Permian-Triassic transition. It is reasonable to infer that the end-Permian mass extinction (EPME) is located at the intensive wildfire interval. The reduction in spore pollen and the decrease in charcoal reflectance hint at a vegetational impoverishment that occurred after this interval. We proposed that increased wildfires, promoted by dry climate conditions and volcanism, aggravated the collapse of the forest ecosystem during the latest Permian.

KeywordCharcoal delta C-13(org) Reflectance Permian-Triassic Terrestrial Dalongkou section
DOI10.1016/j.earscirev.2021.103670
Indexed BySCI
Language英语
WOS KeywordCARBON-ISOTOPE COMPOSITION ; ATMOSPHERIC OXYGEN LEVELS ; MASS EXTINCTION ; ORGANIC-CARBON ; TRIASSIC/JURASSIC BOUNDARY ; REFLECTANCE MEASUREMENTS ; TERRESTRIAL ECOSYSTEMS ; CHARCOAL REFLECTANCE ; FOSSIL CHARCOAL ; PALAEO-WILDFIRE
Funding ProjectChinese Academy of Sciences[XDB26000000] ; Chinese Academy of Sciences[XDB18000000] ; National Natural Science Foundation of China[U1702242] ; CAS[QYZDY-SSW-DQC023]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000670197300001
Funding OrganizationChinese Academy of Sciences ; National Natural Science Foundation of China ; CAS
PublisherELSEVIER
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/38385
Collection中国科学院南京地质古生物研究所
Corresponding AuthorZhang, Hua(张华)
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 39 East Beijing Rd, Nanjing 210008, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, 163 Xianlin Ave, Nanjing 210023, Jiangsu, Peoples R China
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Cai, Yao-feng,Zhang, Hua,Cao, Chang-qun,et al. Wildfires and deforestation during the Permian-Triassic transition in the southern Junggar Basin, Northwest China[J]. EARTH-SCIENCE REVIEWS,2021,218:15.
APA Cai, Yao-feng,Zhang, Hua,Cao, Chang-qun,Zheng, Quan-feng,Jin, Chuan-fang,&Shen, Shu-zhong.(2021).Wildfires and deforestation during the Permian-Triassic transition in the southern Junggar Basin, Northwest China.EARTH-SCIENCE REVIEWS,218,15.
MLA Cai, Yao-feng,et al."Wildfires and deforestation during the Permian-Triassic transition in the southern Junggar Basin, Northwest China".EARTH-SCIENCE REVIEWS 218(2021):15.
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