Macroscopic fossil charcoals as proxy of a local fire linked to conifer-rich forest from the late Pliocene of northwestern Yunnan, Southwest China
Huang, Yong-Jiang1,2; Shen, Hui3; Jia, Lin-Bo1; Li, Shu-Feng4; Su, Tao4; Nam, Gi-Soo5; Zhu, Hai6; Zhou, Zhe-Kun1,4
刊名PALAEOWORLD
2021-09-01
卷号30期号:3页码:551-561
关键词Neogene palaeofire palaeovegetation precipitation seasonality Sanying Formation Tibetan Plateau
ISSN号1871-174X
DOI10.1016/j.palwor.2020.07.005
英文摘要

Yunnan at southeastern margin of the Tibetan Plateau is subject to frequent wildfires each year, while its wildfire history remains poorly known due to the lack of studies on palaeofire in the region. In this study, we report a local fire from the late Pliocene of northwestern Yunnan, based on macroscopic fossil charcoals recovered from the Sanying Formation of Lanping Basin. These sedimentary charcoals exhibit silky lustre in the light and complete homogenization of adjacent xylem cell walls, characterizing the result of incomplete combustion during the late Pliocene. Our preliminary taxonomic analysis indicates that the studied charcoals are dominated by conifers, suggesting higher importance of coniferous elements as fuel sources in the fire. We assert a conifer-rich source forest for the fire event by also considering plant remains of other types, i.e., needle fragments, small shoots, fruits and seeds, from the same sampling layer. Since conifers are commonly prone to wildfires, this type of forest might have a close link with the fire by serving highly flammable fuels. We consider that the regionally seasonal drought during the late Pliocene might also take responsibility, because in the dry season forest fuels such as ground litter would become ignitable after intensive desiccation. As modern wildfires in northwestern Yunnan are closely coupled with conifer-dominant forests and seasonally dry climate, we assume this correlation might have been established by the late Pliocene. Our study may bring attention to potential roles of wildfire on local and/or regional flora and vegetation evolution in this region. (c) 2020 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights reserved.

资助项目National Natural Science Foundation of China[41972023] ; National Natural Science Foundation of China[31670216] ; National Natural Science Foundation of China[31700184] ; Foundation of the State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences[163108] ; Foundation of the State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences[183132]
WOS关键词ATMOSPHERIC OXYGEN LEVELS ; MONSOONAL CLIMATE ; SP-NOV ; VEGETATION ; HISTORY ; RECORD ; BASIN ; WOOD ; RECONSTRUCTION ; ARIDIFICATION
WOS研究方向Paleontology
语种英语
出版者ELSEVIER
WOS记录号WOS:000689524200006
资助机构National Natural Science Foundation of China ; Foundation of the State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences
内容类型期刊论文
源URL[http://ir.nigpas.ac.cn/handle/332004/39800]  
专题中国科学院南京地质古生物研究所
通讯作者Huang, Yong-Jiang
作者单位1.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Biodivers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
3.Univ Chinese Acad Sci, Sch Humanities, Beijing 100049, Peoples R China
4.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
5.Gongju Natl Univ Educ, 27 Woongjin Ro, Gongju Si 32553, Chungcheongnam, South Korea
6.Shangrao Normal Univ, Coll Life Sci, Shangrao 334001, Jiangxi, Peoples R China
推荐引用方式
GB/T 7714
Huang, Yong-Jiang,Shen, Hui,Jia, Lin-Bo,et al. Macroscopic fossil charcoals as proxy of a local fire linked to conifer-rich forest from the late Pliocene of northwestern Yunnan, Southwest China[J]. PALAEOWORLD,2021,30(3):551-561.
APA Huang, Yong-Jiang.,Shen, Hui.,Jia, Lin-Bo.,Li, Shu-Feng.,Su, Tao.,...&Zhou, Zhe-Kun.(2021).Macroscopic fossil charcoals as proxy of a local fire linked to conifer-rich forest from the late Pliocene of northwestern Yunnan, Southwest China.PALAEOWORLD,30(3),551-561.
MLA Huang, Yong-Jiang,et al."Macroscopic fossil charcoals as proxy of a local fire linked to conifer-rich forest from the late Pliocene of northwestern Yunnan, Southwest China".PALAEOWORLD 30.3(2021):551-561.
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