气候变化领域集成服务门户(CCPortal): <p>Keywords: PETM Palynological record Swamp ecosystem Fushun Basin NE China</p>

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DOI	10.1016/j.palaeo.2022.110975
	Keywords: PETM Palynological record Swamp ecosystem Fushun Basin NE China
	Xie, Yulong; Wu, Fuli; Fang, Xiaomin
通讯作者	Wu, FL ; Fang, XM (通讯作者)
发表日期	2022
ISSN	0031-0182
EISSN	1872-616X
卷号	595
英文摘要	The Paleocene-Eocene Thermal Maximum (PETM, ~56 Ma) was a geologically abrupt and extreme global warming event that had a profound effect on global climate and ecosystems. Efforts to understand the response of vegetation to this hyperthermal event have hitherto primarily focused on Europe and North America. However, a limited record from China hampers the understanding of regional terrestrial ecosystem response to PETM warming. Here, we present the a detailed palynological record from the Fushun Basin, NE China, spanning the late Paleocene to early Eocene. The palynological assemblage reveals an abrupt change in vegetation composition as a response to PETM warming. Swamps dominated by taxodioid conifers (Cupressaceae) were abruptly replaced by communities of Pinaceae conifers and the megathermal genus Aquilapollenites. This marked the abrupt collapse of the swamp ecosystem during the PETM as climate became hotter and wetter and mean annual temperature (MAT) increased from 15.6 C to 19.7 C. Vegetation turnover was driven by rapid global warming and localised changes due to increases in precipitation, subsequent elevated water levels, and expansion of lake systems. The marked discrepancy in the characteristics and magnitudes of the respective vegetation responses shows that the effects of PETM warming were more severe for swamp ecosystems than for other terrestrial ecosystems. The PETM warming led to swamp degradation, frequent wildfires, and concomitant peat burning; these changes may have triggered further warming through positive feedback mechanisms.
关键词	PALEOCENE-EOCENE BOUNDARY CARBON-ISOTOPE EXCURSION THERMAL MAXIMUM EXTREME PRECIPITATION COEXISTENCE APPROACH CLIMATE-CHANGE VEGETATION EVOLUTION SECTION RESOLUTION
英文关键词	PETM; Palynological record; Swamp ecosystem; Fushun Basin; NE China
语种	英语
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000793508500001
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
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/260577
推荐引用方式 GB/T 7714	Xie, Yulong,Wu, Fuli,Fang, Xiaomin. Keywords: PETM Palynological record Swamp ecosystem Fushun Basin NE China [J]. 中国科学院青藏高原研究所,2022,595.
APA	Xie, Yulong,Wu, Fuli,&Fang, Xiaomin.(2022). Keywords: PETM Palynological record Swamp ecosystem Fushun Basin NE China .PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,595.
MLA	Xie, Yulong,et al." Keywords: PETM Palynological record Swamp ecosystem Fushun Basin NE China ".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 595(2022).