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冰消期至早全新世的新仙女木事件 ( Younger Dryas,简称 YD) ,因降温时间短 ,气候波动强 ,是全球气候研究者关注的热点。根据近期的研究 ,YD事件在欧洲、北美和我国北方都有所表现。但在我国长江以南的内陆地区 ,未见报道。笔者在用孢粉资料探讨我国南方南岭东部地区1 50 0 0 yr BP以来的植被与环境演变时 ,发现约在 1 0 4 0 0 yr BP前 ,植被发生了较大的变化 ,气候有一较明显的降温波动。这是我国低纬度内陆地区 YD事件的可靠证据 ,这对完善我国南北方更新世至全新世早期的古气候研究工作 ,预测未来的气候变化及东亚古季风的变迁 ,有着重要的意义。
Younger Dryas (YD), which disappears from ice to early Holocene, is a hot topic of concern for researchers worldwide because of its short cooling time and strong climate fluctuations. According to recent studies, the YD incident has been demonstrated in Europe, North America and northern China. However, no reports have been reported in the inland areas south of the Yangtze River in our country. When using the sporopollen information to explore the evolution of vegetation and environment since the 1950s in the eastern Nanling area of China, we found that there was a large change in vegetation before about 10400 yr BP, Significant cooling fluctuations. This is a reliable evidence of YD event in the low latitude inland of our country. It is of great significance to improve the paleoclimate research work from the Pleistocene to the early Holocene in our country, predict the future climate change and the change of the East Asian monsoon.