【摘要】 以历史文献资料、树木年轮、冰芯等记录为依据, 论证了“Dark Ages”(400~600 AD)时期发生过一次以冷干为特征的气候突变. 此次气候突变在中国及世界其它地区均有所反映, 可以推断此次气候突变在北半球比较明显甚至具有全球性, 它对人类社会的发展造成了灾难性的影响. 到目前为止关于“Dark Ages”时期气候突变的原因有许多争议, 有待于进一步的研究证实. 气候总是在冷暖波动中前进的, 结合紧随其后的中世纪暖期(MWP), 由“Dark Ages”向“MWP”的过渡可以为认识由小冰期(LIA)向20世纪全球变暖的转变提供借鉴.更多还原

【Abstract】 In recent years, !Dark Ages" has drawn more and more scholars’ attention in Europe. They believe that there was an abrupt climate change during about 400～600 AD. It is characterized as cold and dry in Europe, and the coldest period appeared in the 30’s of the 6th Century. On this basis, the climate change during the !Dark Ages" (400～600 AD) is expounded and proved in this paper according to the records of historical documents, tree-ring, ice core etc. It is found that the dry-cold period existed in China and other countries in the world. We can conclude that the cold event may have covered the entire Northern Hemisphere or even the globe. Because of the abrupt change, it brought catastrophic influence to human beings: agricultural failure, drought, famine, epidemic disease, followed by massive flood, plague, the disorder of society, migration, war etc. At present, there are many controversial opinions about the reason of the abrupt change of climate. The main opinions are as follow: eruption of a super volcanic, a comet or asteroid hit the earth, solar activity that caused the climate event on earth. Further study and verification is needed. Study on the transition form !Dark Ages" to Medieval Warm Period will provide us some valuable references to understand the climate change from Little Ice Age to the 20th Century warming.更多还原