The Climatic Fluctuation and Important Events of Holocene Megathermal in China

摘要: Data from various sources including the ice core, inland lakes , paleosols in loess and eolian sands, sea level fluctuations, paleozoological, archeological evidences especially palynology bontanical studies of China are reviewed . Holocene Megathermal mainly appeared during 8. 5-3 ka BP lasted for 5. 5 ka. There were several strong climatic fluctuations cooling events this period, e. g. it was an unstable temperature fluctuation phase 5-7. 2 accompanied with increase precipitation as well northward westward migration vegetation zone ; rapid development Neolithic Culture happened phase. It a stable warm wet 7. to 6 BP, i. Maximum, when monsoon rainfall almost throughout China, plants unprecedentedly flourished, Yangshao reached its climax. is characterized by adverse environment 6-5 impact on culture development. After climate better than those former phase, there sharp number archaeological sites. Around 4 deteriorated catastrophic flood then 3 still humid.