南岭东部新仙女木事件的孢粉学证据(英文)

EVIDENCE FOR THE YOUNGER DRYAS EVENT IN THE EASTERN PART OF NANLING REGION

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。

The Younger Dryas Event has been recorded in Europe, North and South America and in Northern Part of China, although up to now, there is not any evidence found in Southern China. A pollen spectrum in Nanling Region showed that there existed a sharp decrease of the ever green broad leaved tree pollen around 10 400 a BP. It may be the effect of the Younger Dryas Event on the lower latitude of China.