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根据已有的中国晚新近纪哺乳动物化石记录,综合新近研究成果,初步探讨中国晚新近纪哺乳动物群落演变进程及其对于气候与环境变化的响应。结果表明,自中中新世晚期至晚中新世(约13 Ma至7-8 Ma),中国北方哺乳动物群落组成上没有明显的分异;而在其后的晚中新世晚期发生了较为明显的区域性分化,分化为东部地区以适应潮湿的较为封闭的动物群落与西部地区适应干旱的开阔环境的群落,这种分异可能与东亚夏季风的加强密切相关; 青藏高原及其周边地区化石类群的扩散与交流资料也表明由青藏高原隆升而形成的地理阻隔也可能发生在该时期;上新世哺乳动物群落演化表现出对于持续的干旱化气候背景的适应,而晚上新世某些类群的分异与主导地位的确立与该时期气候环境背景的剧烈震荡相一致。由于化石资料的不完整,时段分布的不均一,以及地理分布区域的局限,全面认识中国晚新近纪哺乳动物群落组成以及与环境变化的关系尚有很长的一段历程。
Based on the existing records of mammalian fossils in late Neogene in China and based on recent research results, the evolution of mammalian communities in late Neogene in China and its response to climate and environmental changes are discussed. The results showed that there was no significant difference in the composition of mammalian communities in northern China since the late Miocene to late Miocene (about 13 Ma to 7-8 Ma), whereas in later Late Neo-Miocene The more obvious regional differentiation, the differentiation into the eastern region to adapt to the wet more closed animal communities and the western region to adapt to arid and open-environment communities, this differentiation may be closely related to the strengthening of the East Asian summer monsoon; the Tibetan Plateau and its surrounding Diffusion and exchange data of regional fossil groups also indicate that the geographical barrier formed by the uplift of the Qinghai-Tibet Plateau may also occur during this period. The evolution of the Pliocene mammalian community showed its adaptation to the persistent arid climate background, while the late Pliocene The establishment and dominance of some taxa are consistent with the violent concussion of the climatic environment during this period. Due to the incomplete information of fossils, the uneven time distribution and the limitation of geographical distribution, it is quite a long history to fully understand the mammalian community composition in the late Neo-Neiman Margin and its relationship with environmental changes.