论文部分内容阅读
猪类对比研究表明,从晚中新世初期到晚中新世末(或上新世初期),中国与欧洲的古气候、古环境和猪类演化都受到了全球性自然变化的影响,有着相同或相似的发展经历。晚中新世早期(early Vallesian(MN9))中国与欧洲的猪类显示它们均受到先前来自南亚猪类的影响,南亚猪类可能通过东南亚扩散到中国南方,通过西亚扩散到欧洲。晚中新世中期(lateVallesian(MN10)and early Turolian(MN11)),中国和欧洲的猪类与南亚已基本没有交流,在各自地区相对独立地演化发展。晚中新世晚期(late Turolian(MN12、MN13))中国北方除了保留有从南方迁移来的种类外,欧洲的猪类也已出现,此时中国(北方)动物群与欧洲动物群关系较为密切。南亚动物群在晚中新世早期(或者更早些)似乎已经和中国及欧洲的动物群分离。受青藏高原隆升等自然因素的影响,晚中新世中后期中国南方的古环境有一个从较为封闭、湿热的森林类型向相对开阔、干冷稀树草原类型的演变过程,而在此期间北方的自然环境则可能是从早期的半干旱疏林草原逐步发展到晚中新世末期的湿润林地。晚中新世欧洲自然环境有一个与中国南方相似的变化过程,比较而言,晚中新世中后期欧洲的环境可能比中国北方更为开阔和干冷。古气候和古环境变化是影响晚中新世猪类分布演化的决定性因素。
A comparative study of pigs shows that the paleoclimate, the paleoenvironment and the evolution of pigs in China and Europe have been affected by the global natural changes from the early Late Miocene to late Late Miocene (or early Pliocene) Same or similar development experience. Early and late Eocene (early Vallesian (MN9)) Pigs in China and Europe showed that they were all affected by previous pigs from South Asia that could have spread to South China through South-East Asia and into Europe through West Asia. Late late mid-Miocene (MN10) and early Turolian (MN11) pigs in China and Europe have had little or no communication with South Asia and have developed relatively independently in their respective regions. Late Turolian (MN12, MN13) In northern China, in addition to the species migrated from the south, European pigs have also emerged. At this time, the fauna of China (North) is more closely related to the European fauna . The South Asian fauna appear to have separated from fauna in China and Europe early or late in the Miocene (or earlier). Due to the natural factors such as the uplift of the Qinghai-Tibet Plateau, the paleoenvironment of the southern China in the late Mid-Miocene had a evolution from a relatively closed, humid-hot forest type to a relatively open, dry and cold savannah type. In the meantime, The natural environment may be from the early semi-arid forest step by step to the late Late Miocene wetland. Late Miocene The European natural environment had a similar change process as southern China. In contrast, the environment in Europe during the late Mid Miocene may be more open and dry than northern China. Paleoclimate and paleoenvironmental changes are the decisive factors influencing the evolution of late Miocene pigs.