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DOI	10.1016/j.quascirev.2019.105905
	Late Pliocene and early Pleistocene vegetation and climate change revealed by a pollen record from Nihewan Basin; North China
	Li Y.; Zhang Z.; Ding G.; Xu Q.; Wang Y.; Chi Z.; Dong J.; Zhang L.
发表日期	2019
ISSN	0277-3791
卷号	222
英文摘要	The Nihewan Formation is an important early Quaternary sedimentary formation in North China. We conducted pollen analyses of 183 samples and 1611 modern surface samples to characterize the processes of vegetation succession and climate change during the Pliocene-Pleistocene transition (2.89–2.34 Ma) in the Nihewan Basin. The results show that pollen assemblages are dominated by arboreal pollen, indicating that the vegetation in the study area was forest dominated and that the climate was more humid than today, however, the temperature varied substantially. The most substantial vegetation and climate changes occurred at ∼2.8 Ma, when the pollen representation of warm and humid tolerant taxa such as evergreen Quercus and Carya disappeared, and also broadleaved deciduous types such as Ulmus, deciduous Quercus and Betula decreased obviously, on the contrary, the pollen representation of cold and drought tolerant taxa increased substantially: e.g. Picea (from generally less than 20% to more than 30%) and Chenopodiaceae (from generally less than 10% to more than 20%). The quantitative reconstructed results indicating that Tann decreased by about 2–3 °C and Pann decreased by ∼150 mm compared to before 2.8 Ma, with a maximum decrease of ∼9 °C for Tann and ∼450 mm for Pann. Another important vegetation and climate changes occurred at ∼2.6 Ma, which was the coldest and driest of the studied interval, when the vegetation was substantially simplified with spruce (generally above 80%) as the dominated types. © 2019 Elsevier Ltd
英文关键词	Nihewan Basin; Paleoclimatic quantitative reconstruction; Paleovegetation transition; Pliocene-Pleistocene transition; Pollen assemblages
语种	英语
scopus关键词	Vegetation; Early pleistocene; Nihewan Basin; Paleovegetation transition; Pleistocene; Pollen analysis; Pollen assemblage; Sedimentary formation; Vegetation successions; Climate change; climate change; deciduous tree; drought; evergreen tree; fossil assemblage; fossil record; paleoclimate; paleoecology; paleotemperature; Pliocene-Pleistocene boundary; pollen; reconstruction; vegetation type; China; Hebei; Nihewan Basin; Amaranthaceae; Betula; Carya; Picea; Quercus; Ulmus
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151763
作者单位	College of Resources and Environmental Science, Hebei Normal University, Shijiazhuang, 050024, China; Key Laboratory of Environmental Evolution and Ecological Construction of Hebei Province, Hebei Normal University, Shijiazhuang, 050024, China; Institute of Geological, Chinese Academy of Geological Sciences, Beijing, 100037, China
推荐引用方式 GB/T 7714	Li Y.,Zhang Z.,Ding G.,et al. Late Pliocene and early Pleistocene vegetation and climate change revealed by a pollen record from Nihewan Basin; North China[J],2019,222.
APA	Li Y..,Zhang Z..,Ding G..,Xu Q..,Wang Y..,...&Zhang L..(2019).Late Pliocene and early Pleistocene vegetation and climate change revealed by a pollen record from Nihewan Basin; North China.Quaternary Science Reviews,222.
MLA	Li Y.,et al."Late Pliocene and early Pleistocene vegetation and climate change revealed by a pollen record from Nihewan Basin; North China".Quaternary Science Reviews 222(2019).