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DOI	10.1016/j.palaeo.2021.110662
	Divergent patterns of Holocene hydro-climatic evolution in arid central Asia and the Asian summer monsoon margin indicated by Pediastrum records
	Xiang, Lixiong; Chen, Xuemei; Huang, Chong; Sun, Mingjie; Xiao, Yulin; Hu, Yu; Huang, Xiaozhong
通讯作者	Huang, XZ (通讯作者)，Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0031-0182
EISSN	1872-616X
卷号	582
英文摘要	Subfossil Pediastrum, a genus of green algae (Chlorophyceae) which is sensitive to changes in the aquatic environment, is a potential proxy indicator of the evolution of aquatic ecosystems and climate change. We synthesized subfossil Pediastrum records from arid central Asia (ACA) and the Asian summer monsoon (ASM) region in order to characterize their hydro-climatic evolution during the Holocene. In ACA, low concentrations of subfossil Pediastrum during the early Holocene resulted from the higher salinity caused by a dry climate or lower lake levels. The increasing trend of subfossil Pediastrum content during the middle-late Holocene is consistent with the occurrence of wetter regional climatic conditions. In the marginal areas of the Asian summer monsoon (MASM) region of northern China, the variations in subfossil Pediastrum concentration coincide with increased summer monsoon rainfall during the middle Holocene, but concentrations were generally lower during the late Holocene as a result of increased salinity or alkalinity associated with a weakened summer monsoon. In the Tibetan Plateau, the variations in subfossil Pediastrum abundance are more complicated due to divergent moisture/precipitation patterns influenced by both the ASM and the mid-latitude westerlies. In the Indian summer monsoon-dominated region, subfossil Pediastrum abundance was high during the early Holocene and then gradually decreased after similar to 8 cal kyr BP. The observed asynchronous changes in subfossil Pediastrum in ACA and the MASM region during the Holocene may reflect the specific moisture/precipitation patterns of the monsoon- or westerlies-dominated climatic regimes. We suggest that high evaporation in arid and semi-arid areas would have rapidly increased the salinity and/or alkalinity of lakes, while aquatic environments may have been more stable in more humid areas.
关键词	HIGH-RESOLUTION MOISTURE EVOLUTION VEGETATION CHANGES ECOLOGICAL CHANGES TIBETAN PLATEAU POLLEN RECORD QAIDAM BASIN BOSTEN LAKE SANDY LAND XINJIANG
英文关键词	Pediastrum; Paleoclimate; Holocene; Asian summer monsoon; Arid central Asia
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:000704175900009
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254153
作者单位	[Xiang, Lixiong; Huang, Chong; Sun, Mingjie; Xiao, Yulin; Hu, Yu; Huang, Xiaozhong] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China; [Chen, Xuemei] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources Res, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Xiang, Lixiong,Chen, Xuemei,Huang, Chong,et al. Divergent patterns of Holocene hydro-climatic evolution in arid central Asia and the Asian summer monsoon margin indicated by Pediastrum records[J]. 中国科学院西北生态环境资源研究院,2021,582.
APA	Xiang, Lixiong.,Chen, Xuemei.,Huang, Chong.,Sun, Mingjie.,Xiao, Yulin.,...&Huang, Xiaozhong.(2021).Divergent patterns of Holocene hydro-climatic evolution in arid central Asia and the Asian summer monsoon margin indicated by Pediastrum records.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,582.
MLA	Xiang, Lixiong,et al."Divergent patterns of Holocene hydro-climatic evolution in arid central Asia and the Asian summer monsoon margin indicated by Pediastrum records".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 582(2021).