Pollen evidence for the environmental context of the early Pleistocene Xiashagou fauna of the Nihewan Basin, north China
Pollen evidence for the environmental context of the early Pleistocene Xiashagou fauna of the Nihewan Basin, north China
复制标题
泥河湾盆地早更新世下沙沟动物群环境背景的花粉证据
DOI：
10.1016/j.quascirev.2020.106298
复制
发表时间：
2020-05
影响因子：
4
通讯作者：
Zhang Lei
中科院分区：
文献类型：
--
作者：
Zhang Zhen;Li Yuecong;Li Chenzhi;Xu Qinghai;Zhang Ruchun;Ge Yawen;Li Bing;Deng Chenglong;Li Zhiguang;Zhang Lei
下沙沟动物群是东亚最丰富、最具代表性的动物群之一，可与欧洲晚Villafranchian早期的Olivola动物群直接对比。这对了解东亚第四纪动物群和环境的演化具有重要意义。通过对163个化石样品和1045个地表样品的花粉分析，结合NHA钻孔岩芯的结果，对早更新世和下沙沟动物群早期的植被和气候变化格局进行了描述。结果表明，该地区存在3个冷期（2.6- 2.58Ma、2.55- 2.34Ma、2.20- 2.14Ma）和2个暖期（2.58- 2.55Ma、2.34- 2.20Ma）。寒季以云杉、蒿、苋科、禾本科花粉为主，暖季以松、阔叶树花粉为主。在寒冷期，年平均气温（Tann）下降了0.22 °C（最高可达0.10 °C），年平均降水量（Pann）减少了0.200 mm（最高可达0.500 mm）。下沙沟动物群出现在第三次寒冷期（约2.20Ma）的开始，Tann下降了3-4 °C，Pann下降了100-200 mm，花粉谱以蒿属、苋科和禾本科为主（>80%），植被以草原为主。2.19 ~ 2.18Ma，气候稍暖湿，松榆代表性增加，导致森林发育，2.18Ma后气候又变冷干燥。
The Xiashagou fauna is one of the most abundant and representative faunas in East Asia and can be directly compared to the Olivola fauna of early Late Villafranchian age in Europe. Therefore, it is of great significance for understanding the evolution of the Quaternary faunas and environment of East Asia. We conducted pollen analyses of 163 fossil samples and 1045 surface samples, combining the results from the NHA drill core to characterize the patterns of vegetation and climate change in the Early Pleistocene and the early stage of the Xiashagou fauna. The results enable the definition of three cold periods (2.6–2.58 Ma, 2.55–2.34 Ma, 2.20–2.14 Ma) and two warm periods (2.58–2.55 Ma, 2.34–2.20 Ma). The pollen assemblages are dominated byPiceaorArtemisia, Amaranthaceae and Poaceae during the cold periods, while dominated byPinusand broadleaved trees during the warm periods. The annual average temperature (Tann) decreased by ∼2 °C (up to ∼10 °C), and average annual precipitation (Pann) decreased by ∼200 mm (up to ∼500 mm) during the cold period. The Xiashagou fauna emerged at the beginning of the third cold period (∼2.20 Ma) with Tann decreased by 3–4 °C and Pann by 100–200 mm, when the pollen spectra are dominated byArtemisia, Amaranthaceae and Poaceae (>80%), indicating that the vegetation was predominantly grassland. From 2.19 to 2.18 Ma, the climate became slightly warm and humid, with increasedPinusandUlmusrepresentation, which resulted in the development of forest; after 2.18 Ma the climate became colder and drier again.
登录
查看更多内容
DOI：
10.7312/columbia/9780231150125.003.0008
发表时间：
2013-05
期刊：
--
影响因子：
--
作者：
Bao-quan Cai;Shao‐Hua Zheng;J. Liddicoat;Qiang Li
通讯作者：
Bao-quan Cai;Shao‐Hua Zheng;J. Liddicoat;Qiang Li
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：
10.2307/2401710
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
近2.8马里低高纬度相互作用对东亚冬季风记录400 kyr周期演化的影响
影响因子：
4
作者：
Li Dawei;Zhao Meixun;Tian Jun
通讯作者：
Tian Jun
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