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Climatic control of orbital time-scale wildfire occurrences since the late MIS 3 at Qinghai Lake, monsoon marginal zone

文献类型：期刊论文

作者Hao, Yifei1,2,3; Han, Yongming1,2,4; An, Zhisheng1,2,5; Burr, George S.1
刊名QUATERNARY INTERNATIONAL
出版日期2020-06-10
卷号550页码:20-26
ISSN号1040-6182
关键词Wildfires Climate Orbital time-scale Monsoon Drought Feedback
DOI10.1016/j.quaint.2020.03.002
通讯作者Han, Yongming(yongming@ieecas.cn)
英文摘要Wildfires play an important role in earth climate systems, with influences on the atmosphere, vegetation distributions, and human survival. Considerable debate persists with regard to the relationship between wildfire occurrence and climate. Some records indicate relatively fewer wildfires during glacial times as compared to the Holocene, while others support the opposite view. These contradictory views need to be resolved to fully understand the relationship and controlling mechanisms that relate biomass burning to climate. In this study, black carbon (BC), including both char and soot, is used to reconstruct wildfire history over the past 32 ka from Qinghai Lake. BC, especially as micrometer-size soot, is mainly transported via the atmosphere, and can carry evidence of wildfires over long distances. Qinghai Lake's position on the northeastern edge of the Tibet Plateau is especially well-suited to such long-distance transport, with a potentially global climatic impact. We observed a significantly positive relationship between char and soot fluxes that suggest that the Qinghai Lake BC record is dominated by material transported through the atmosphere in large-scale wildfires. We find that relatively more wildfires occurred during cold-dry late glacial time (32.8-11.7 ka), and fewer wildfires during the warm-humid Holocene. Our study demonstrates that drought is the key factor that determines wildfire occurrences on an orbital time-scale. These fundamental and persistent patterns can assist in our understanding of climate-wildfire interactions and in the assessment of feedbacks on the global climate system, for example, through the well-known relationship between soluble iron and atmospheric CO2.
WOS关键词THERMAL/OPTICAL REFLECTANCE METHOD ; NORTHEASTERN TIBETAN PLATEAU ; CHINESE LOESS PLATEAU ; LAST GLACIAL MAXIMUM ; FIRE REGIMES ; ELEMENTAL CARBON ; CHARCOAL RECORDS ; FOREST-FIRES ; SOURCE AREA ; GRAIN-SIZE
资助项目NSF of China[41625015] ; Chinese Academy of Sciences[132B61KYSB20170005] ; Chinese Academy of Sciences[QYZDY-SSW-DQC001] ; Chinese Academy of Sciences[ZDBS-SSW-DQC001] ; Chinese Ministry of Science and Technology[2016YFE0109500]
WOS研究方向Physical Geography ; Geology
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000555091700002
资助机构NSF of China ; Chinese Academy of Sciences ; Chinese Ministry of Science and Technology
源URL[http://ir.ieecas.cn/handle/361006/15124]  
专题地球环境研究所_古环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Han, Yongming
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Xi An Jiao Tong Univ, Dept Earth & Environm Sci, Xian 710049, Peoples R China
5.Qingdao Natl Lab Marine Sci & Technol, Open Studio Ocean Continental Climate & Environm, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Hao, Yifei,Han, Yongming,An, Zhisheng,et al. Climatic control of orbital time-scale wildfire occurrences since the late MIS 3 at Qinghai Lake, monsoon marginal zone[J]. QUATERNARY INTERNATIONAL,2020,550:20-26.
APA Hao, Yifei,Han, Yongming,An, Zhisheng,&Burr, George S..(2020).Climatic control of orbital time-scale wildfire occurrences since the late MIS 3 at Qinghai Lake, monsoon marginal zone.QUATERNARY INTERNATIONAL,550,20-26.
MLA Hao, Yifei,et al."Climatic control of orbital time-scale wildfire occurrences since the late MIS 3 at Qinghai Lake, monsoon marginal zone".QUATERNARY INTERNATIONAL 550(2020):20-26.

入库方式： OAI收割

来源：地球环境研究所

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