气候变化领域集成服务门户(CCPortal): Vegetation succession and climate change during the early pleistocene (2.2-1.8 Ma) in the Nihewan Basin; northern China

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DOI	10.1016/j.palaeo.2019.109375
	Vegetation succession and climate change during the early pleistocene (2.2-1.8 Ma) in the Nihewan Basin; northern China
	Ding G.; Li Y.; Zhang Z.; Zhang W.; Wang Y.; Chi Z.; Shen G.; Fan B.
发表日期	2020
ISSN	0031-0182
卷号	537
英文摘要	The Nihewan Formation, northern China is ideal for studying environmental changes during the early Pleistocene. In conjunction with palaeomagnetic measurements, pollen and grain-size analyses were conducted on 120 samples from a ~24 m long section (2.2-1.8 Ma) of core NHA from the Nihewan Basin, in order to reconstruct past vegetation and climatic changes. The pollen assemblages were dominated by Pinus, indicating that the vegetation was primarily pine forest and that the climate was relatively warm and wet. From 2.15-1.92 Ma, deciduous broad-leaved tree pollen significantly increased to >10% of the total, showing that more broad-leaved trees grew in the study area during the warmest and wettest period in the study section. From 1.92-1.78 Ma (coeval with the Olduvai event), Pinus and broad-leaved tree pollen types decreased. The percentages of Picea (>20%), Artemisia and Chenopodiaceae increased, indicating that spruce forests expanded, the openness of the forested areas increased and the climate became cold and dry. The vegetation changes reconstructed during the Olduvai period indicates that the climate in the Nihewan Basin was cold and dry, relating to global cooling facilitated by the uplift of the Tibetan Plateau and the strengthening of the winter monsoon. © 2019 Elsevier B.V.
英文关键词	Olduvai event; Palaeoclimate; Palaeovegetation; Pollen assemblages; Reunion event
语种	英语
scopus关键词	broad-leaved forest; climate variation; coniferous tree; deciduous tree; Olduvai event; paleobiogeography; paleobotany; paleoclimate; paleoenvironment; paleomagnetism; palynology; succession; vegetation dynamics; China; Hebei; Nihewan Basin; Qinghai-Xizang Plateau; Amaranthaceae; Artemisia; Picea
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150749
作者单位	College of Resources and Environment Sciences and the Key Laboratory of Environmental Change and Ecological Construction, Hebei Normal University, Shijiazhuang, 050024, China; Key Laboratory of West China's Environmental System (Ministry of Education), Lanzhou University, Lanzhou, 730000, China; Institute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037, China
推荐引用方式 GB/T 7714	Ding G.,Li Y.,Zhang Z.,等. Vegetation succession and climate change during the early pleistocene (2.2-1.8 Ma) in the Nihewan Basin; northern China[J],2020,537.
APA	Ding G..,Li Y..,Zhang Z..,Zhang W..,Wang Y..,...&Fan B..(2020).Vegetation succession and climate change during the early pleistocene (2.2-1.8 Ma) in the Nihewan Basin; northern China.Palaeogeography, Palaeoclimatology, Palaeoecology,537.
MLA	Ding G.,et al."Vegetation succession and climate change during the early pleistocene (2.2-1.8 Ma) in the Nihewan Basin; northern China".Palaeogeography, Palaeoclimatology, Palaeoecology 537(2020).