Late Pliocene and early Pleistocene vegetation and climate change revealed by a pollen record from Nihewan Basin, North China
Late Pliocene and early Pleistocene vegetation and climate change revealed by a pollen record from Nihewan Basin, North China
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华北泥河湾盆地花粉记录揭示的晚上新世和早更新世植被与气候变化
DOI：
10.1016/j.quascirev.2019.105905
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发表时间：
2019-10
影响因子：
4
通讯作者：
Chi Z.Q.
中科院分区：
文献类型：
--
作者：
Li Y.C.;Zhang Z.;Ding G.Q.;Xu Q.H.;Wang Y.;Chi Z.Q.
泥河湾组是华北地区早第四纪重要的沉积建造。通过对泥河湾盆地183个样品和1611个现代地表样品的花粉分析，研究了泥河湾盆地上新世-更新世过渡期（2.89-2.34 Ma）的植被演替和气候变化过程。结果表明，该地区的花粉组合以乔木花粉为主，说明该地区的植被以森林为主，气候较湿润，但温度变化较大。最大的植被和气候变化发生在102.8Ma，常绿栎、山核桃等耐温、耐湿类群的花粉代表性消失，落叶榆、落叶栎、桦木等阔叶类的花粉代表性明显减少，耐寒、耐旱类群的花粉代表性明显增加。例如云杉属（通常小于20%至大于30%）和藜科（通常小于10%至大于20%）。定量重建结果表明，与2.8Ma前相比，Tann下降了约2-3 °C，Pann下降了约150 mm，最大下降幅度分别为109 °C和450 mm。另一个重要的植被和气候变化发生在2.6Ma，这是最冷和最干燥的研究间隔，当植被基本上简化与云杉（通常超过80%）为主导类型。
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 evergreenQuercusandCaryadisappeared, and also broadleaved deciduous types such asUlmus, deciduousQuercusandBetuladecreased 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.
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影响因子：
2.2
作者：
Fuli Wu;X. Fang;Congrong An;M. Herrmann;Yan Zhao;Y. Miao
通讯作者：
Fuli Wu;X. Fang;Congrong An;M. Herrmann;Yan Zhao;Y. Miao
DOI：
10.1016/0031-0182(94)90181-3
发表时间：
1994-06-01
影响因子：
3
作者：
LEROY, S;DUPONT, L
通讯作者：
DUPONT, L
DOI：
10.2307/2401710
发表时间：
1965-05
期刊：
--
影响因子：
--
作者：
K. Faegri;J. Iversen
通讯作者：
K. Faegri;J. Iversen
影响因子：
11.6
作者：
Qin, Feng;Ferguson, David K.;Li, Chengsen
通讯作者：
Li, Chengsen
影响因子：
5.3
作者：
J. Etourneau;R. Schneider;T. Blanz;P. Martinez
通讯作者：
J. Etourneau;R. Schneider;T. Blanz;P. Martinez