气候变化领域集成服务门户(CCPortal): Wildfire evolution and response to climate change in the Yinchuan Basin during the past 1.5 Ma based on the charcoal records of the PL02 core

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DOI	10.1016/j.quascirev.2020.106393
	Wildfire evolution and response to climate change in the Yinchuan Basin during the past 1.5 Ma based on the charcoal records of the PL02 core
	Shi, Yulan; Pan, Baolin; Wei, Mingjian; Li, Xinling; Cai, Maotang; Wang, Junping; Xu, Xiangke; Hu, Jianmin; Shi, Wei
通讯作者	Pan, BL ; Wei, MJ (通讯作者)
发表日期	2020
ISSN	0277-3791
EISSN	1873-457X
卷号	241
英文摘要	Wildfire activity is an important part of natural ecosystems and is strongly influenced by climate and vegetation changes. Given this, the reconstruction of wildfire history is crucial to understanding the interrelationships between past climate change and fire dynamics, especially in terms of revealing past climate change characteristics during particularly important periods. In this study we employed a macrocharcoal sequence to reconstruct the wildfire history in the Yinchuan Basin (an arid and semi-arid region in China) during the past 1.5 Ma. The responses of wildfire activity to climate and vegetation changes were compared with other obtained environmental indices such as magnetic susceptibility, pollen in the terrestrial basin core (the PL02 core), and delta O-18 in the marine core (LR04). The results confirmed that macro-charcoal records are an effective and sensitive indicator of environmental evolution in arid and semi-arid areas. The peak values of charcoal concentration and charcoal flux generally occurred during climate transition periods, especially in the transition period from humid to drought conditions (specifically in the MIS41-MIS40, MIS39-MIS38, MIS19-MIS18, MIS17-MIS16, MIS15-MIS14, MIS11-MIS10, MIS9-MIS8, and MIS3-MIS2 time intervals). Furthermore, we found that the biomass burned in wildfires (i.e., the high biomass burned as indicated by the peak levels of charcoal concentration) was controlled by the amount of vegetation, while the occurrence of wildfires was related to climate fluctuations. In addition, some Milankovitch cycles (such as 100-ka cycles, 40-ka cycles, and 20-ka cycles) were evident in the charcoal records, thus indicating that the main driving force of wildfire activity in the Yinchuan Basin was climate change caused by variations in the Earth's orbit. Among these, the 40-ka cycles disappeared after 0.72 Ma, accompanied by changes in wildfire activity characteristics. We also discovered that the 400-ka cycles were stable throughout time. This study provides reliable evidence for some remarkable climate events, including the Mid-Pleistocene Transition (MPT) and the Mid-Brunhes Event (MBE), from the charcoal records in the Yinchuan Basin (an arid and semi-arid region in the midlatitudes of the Northern Hemisphere). (C) 2020 Elsevier Ltd. All rights reserved.
关键词	FIRE HISTORY PLEISTOCENE TRANSITION MICROSCOPIC CHARCOAL SPOROPOLLEN RECORD CARBON RESERVOIR POLLEN RECORD NATIONAL-PARK ASIA EVIDENCE BLACK CARBON TIME-SCALE
英文关键词	Yinchuan Basin; 1.5 Ma; Climate change; Charcoal; Wildfire activity
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000551471300005
来源期刊	QUATERNARY SCIENCE REVIEWS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259899
推荐引用方式 GB/T 7714	Shi, Yulan,Pan, Baolin,Wei, Mingjian,et al. Wildfire evolution and response to climate change in the Yinchuan Basin during the past 1.5 Ma based on the charcoal records of the PL02 core[J]. 中国科学院青藏高原研究所,2020,241.
APA	Shi, Yulan.,Pan, Baolin.,Wei, Mingjian.,Li, Xinling.,Cai, Maotang.,...&Shi, Wei.(2020).Wildfire evolution and response to climate change in the Yinchuan Basin during the past 1.5 Ma based on the charcoal records of the PL02 core.QUATERNARY SCIENCE REVIEWS,241.
MLA	Shi, Yulan,et al."Wildfire evolution and response to climate change in the Yinchuan Basin during the past 1.5 Ma based on the charcoal records of the PL02 core".QUATERNARY SCIENCE REVIEWS 241(2020).