气候变化领域集成服务门户(CCPortal): Hydroclimate Changes Based on Testate Amoebae in the Greater Khingan Mountains' Peatland (NE China) during the Last Millennium

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DOI	10.3390/atmos15030314
	Hydroclimate Changes Based on Testate Amoebae in the Greater Khingan Mountains' Peatland (NE China) during the Last Millennium
	Li, Xiao; Han, Dongxue; Cong, Jinxin; Gao, Chuanyu; Wang, Guoping
发表日期	2024
EISSN	2073-4433
起始页码	15
结束页码	3
卷号	15 期号:3
英文摘要	The driving force of climate change in the monsoon margin is complex, making it a key area for regional and global climate change research. Palaeohydrological studies in the monsoon margin have increased the resolution of research in the long term, transitioning from qualitative to quantitative studies to comprehend climate change processes, patterns, and mechanisms. Testate amoebae (TA) in peat sediments are used as a proxy indicator organism for quantitative reconstruction of palaeohydrology. Thus, their community changes are directly related to precipitation, and widely used to reconstruct the patterns of summer precipitation globally. We investigated TA species and reconstructed palaeohydrological changes in the Greater Khingan Mountains' Hongtu (HT) peatland, located in the East Asian Summer Monsoon (EASM) margin. The result showed that the most abundant TA species were Assulina muscorum (12.4 +/- 5.0%) and Nebela tincta (8.9 +/- 4.9%) in the HT peat core. The increase in dry indicator species (e.g., A. muscorum and Alabasta militaris) indicated a drying pattern in the HT peatland since 150 cal yr BP. Principal component analysis (PCA) explained 47.6% of the variation in the selected TA assemblages. During 400 to 250 cal yr BP, PCA axis 1 scores ranged from 0.2 to -1.3 (reflecting a drier climate), associating with the Little Ice Age. The paleohydrology of the northern part of the Greater Khingan Mountains was mainly controlled by the EASM, which was associated with changes in North Atlantic Sea surface temperature and solar radiative forcing. The apparent drying pattern may be the result of the gradual intensification of anthropogenic activities and the increase in EASM intensity.
英文关键词	peatland; testate amoebae; East Asian Summer Monsoon; reconstruction; palaeohydrology
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001191776900001
来源期刊	ATMOSPHERE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/308341
作者单位	Chinese Academy of Sciences; Northeast Institute of Geography & Agroecology, CAS; Chinese Academy of Sciences; Northeast Institute of Geography & Agroecology, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Li, Xiao,Han, Dongxue,Cong, Jinxin,et al. Hydroclimate Changes Based on Testate Amoebae in the Greater Khingan Mountains' Peatland (NE China) during the Last Millennium[J],2024,15(3).
APA	Li, Xiao,Han, Dongxue,Cong, Jinxin,Gao, Chuanyu,&Wang, Guoping.(2024).Hydroclimate Changes Based on Testate Amoebae in the Greater Khingan Mountains' Peatland (NE China) during the Last Millennium.ATMOSPHERE,15(3).
MLA	Li, Xiao,et al."Hydroclimate Changes Based on Testate Amoebae in the Greater Khingan Mountains' Peatland (NE China) during the Last Millennium".ATMOSPHERE 15.3(2024).