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首页> 外文期刊>Palaeogeography, Palaeoclimatology, Palaeoecology: An International Journal for the Geo-Sciences >Pollen evidence of the palaeoenvironments of Lufengpithecus lufengensis in the Zhaotong Basin, southeastern margin of the Tibetan Plateau
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Pollen evidence of the palaeoenvironments of Lufengpithecus lufengensis in the Zhaotong Basin, southeastern margin of the Tibetan Plateau

机译：青藏高原东南缘昭通盆地卢峰古猿陆风古环境的花粉证据

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摘要

Evolutionary processes in hominoid primates were closely related to global and/or regional environmental changes, and therefore palaeoenvironmental reconstruction is fundamental for understanding how environmental changes shaped their evolution. Here, we present pollen data from the 16-m-thick Shuitangba (STB) section, Yunnan Province, southwestern China, bearing remains of the hominoid Lufengpithecus lufengensis of the terminal Miocene; and use principal component analysis to reconstruct the palaeovegetation and palaeodimate during the key period when the hominoid lived. Our results show that before the STB hominoid appeared (Zone A), the vegetation was dominated by subtropical evergreen broad-leaved taxa with a few temperate deciduous taxa (e.g., Quercus, Castanea/Castanopsis, Alnus). The development of aquatic plants commencing at the similar to 12 m depth is a prominent feature, indicating a warm and humid climate. During the time when the hominoid lived (Zone B), evergreen broad-leaved forests with evergreen Quercus were predominant, while grasses including Poaceae began to expand, and simultaneously conifers decreased, indicating a warm climate. The significant presence of aquatic pollen taxa in subzone A-2 and Zone B suggests the occurrence of lacustrine or swampy environments. In contrast, in Zone C, the vegetation changed to coniferous forest, indicating cooler and drier conditions. These results provide substantive evidence of the vegetation conditions when the hominoid lived, suggesting that the greater diversity of vegetation and the warm humid climate, compared to the present day, would have favoured its survival. (C) 2015 Elsevier B.V. All rights reserved.
机译：类人猿灵长类动物的进化过程与全球和/或区域环境变化密切相关，因此古环境重建对于理解环境变化如何影响其进化至关重要。在这里，我们提供了来自中国西南部云南省16毫米厚的水塘坝（STB）断面的花粉数据，其中含有中新世末期的类人陆风Lufengpithecus lufengensis的残骸。在类人猿生存的关键时期，运用主成分分析法重建古植被和古生物。我们的结果表明，在机顶盒类人猿出现之前（A区），植被以亚热带常绿阔叶类群和一些温带落叶类群（例如栎属，板栗//香，Al木）为主。从接近12 m的深度开始发展水生植物是一个突出特征，表明气候温暖湿润。在类人动物居住的时期（B区），常绿阔叶林和常绿栎类居多，而禾本科（包括禾本科）开始膨胀，同时针叶树减少，表明气候温暖。 A-2区和B区中水生花粉类群的大量存在表明湖相或沼泽环境的发生。相反，在C区，植被变为针叶林，表明天气凉爽干燥。这些结果为类人猿生存时的植被状况提供了实质性证据，表明与当今相比，植被的多样性和温暖湿润的气候将有利于其生存。 （C）2015 Elsevier B.V.保留所有权利。

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