Early and Middle Pleistocene vegetation and its impact on faunal succession on the Liaodong Peninsula, Northeast China
Early and Middle Pleistocene vegetation and its impact on faunal succession on the Liaodong Peninsula, Northeast China
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辽东半岛早中更新世植被及其对动物群演替的影响
DOI：
10.1016/j.quaint.2020.11.034
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发表时间：
2021
影响因子：
2.2
通讯作者：
Xiaoqiang Li
中科院分区：
文献类型：
--
作者：
Hui Shen;Keliang Zhao;Junyi Ge;Xinying Zhou;Yayun Song;Sizhao Liu;Yuan Wang;Changzhu Jin;Chunling Gao;Wenjuan Huang;Xiaoqiang Li
辽东半岛金源洞25.3 m（2.2-0.41 Ma）剖面的孢粉资料表明，早-中更新世以来，气候呈逐渐变冷变干的趋势，并有明显的波动。植被以温带阔叶林为代表。2.2至1.87 Ma，气候相对温暖湿润。1.87 ~ 1.82Ma为明显的冷干期，1.82 ~ 1.76Ma为针阔混交林发育期。1.52Ma至中更新世过渡期（MPT），植被以森林草原为主，后期气候变冷。在0.59-0.41 Ma期间，草原发育，气候寒冷干旱。同时，随着气候的变化，动物群落也发生了明显的变化，并与植被类型共同进化。早更新世早期温暖湿润的气候与广泛的喜温动物的存在有关。从1.7到1.5 Ma，从森林到森林草原的过渡可能促进了某些草原适应动物的出现。在MPT期间，由于森林草原植被的蓬勃发展，草原适应动物成为主导。中更新世草原扩张，动物适应了干旱草原环境。
Pollen evidence from a 25.3-m-long section (~2.2–0.41 Ma) in the Jinyuan Cave, Liaodong Peninsula, indicates that from the Early–Middle Pleistocene, the climate showed a trend of gradual cooling and drying, with obvious fluctuations. The vegetation was represented by temperate broad-leaved forest from ca. 2.2 to 1.87 Ma, suggesting a relatively warm and humid climate. The period from 1.87 to 1.82 Ma witnessed an obviously cold and dry event, and coniferous and broadleaved mixed forests developed from 1.82 to 1.76 Ma. From 1.52 Ma to the Mid-Pleistocene Transition (MPT), the vegetation was dominated by forest steppe, and the climate became cold in the later stage. During the 0.59–0.41 Ma period, steppes developed, and the climate was cold and arid. At the same time, with climate variation, the faunal communities also changed obviously and co-evolved with vegetation types. In the early stage of the Early Pleistocene, the warm and humid climate was related to the presence of a wide range of thermophilous animals. From 1.7 to 1.5 Ma, the transition from forest to forest steppe might have promoted the emergence of certain grassland-adapted animals. During the MPT, grassland-adapted animals became dominant due to the flourishing forest steppe vegetation. The Middle Pleistocene witnessed the expansion of steppe and animals adapted to the arid grassland environment at that time.