///The influence of global warming on East Asian Monsoon (EAM) has received intensive concern, and studies on history of EAM could provide important climate analogue in the warmer temperature context. Five loess-paleosol sequences in the southeastern Loess Plateau were sampled to address the history of EAM during the last 20 ka. The intensity of EAM was weak from 18 to 12 ka B.P., increased rapidly in the interval of 12~10 ka B.P, and reached highest points during 10~6 ka B.P., and declined after 6 ka B.P. The proxies of summer monsoon, magnetic susceptibility and paleo-weathering intensity in this study is basically timely consistent with the geological records in different part of EAM region. The insolation of low-latitude northern hemisphere is main control factor of EAM, although changes of EAM lagged variations of insolation of low-latitude northern hemisphere. The lag may be induced by several important boundary conditions (e.g., scales of polar ice sheet in northern high latitudes, sea level changes, interaction between sea and atmosphere in low latitudes) of EAM to insolation and interaction between components of climate system.
