Keywords Lake sediments, Southwest monsoon, Erhai Lake, Southwest China

Based on the multi-environmental proxies of high-resolution lacustrine records from Erhai Lake, Yunnan Province, Southwest China. The sequence of climate evolution in the past 8ka years in Erhai Lake records has been reconstructed. The results indicate that the climate evolution in the past 8ka years includes nine stages coinciding with lake level fluctuations. Comparisons of relative regional environmental records indicate that the climate evolution reduced from Erhai lake sediments are mainly controlled by the strong-weak transitions and the temporal -spatial changes of southwest monsoon in Southwest China. Before 5.9kaBP, the climate was inclined to warm-temperate condition corresponding with the intensifying of solar radiation and monsoon circulation in northern- sphere. The multi-environmental proxies of lacustrine sediment from Erhai Lake show that in warm or temperate-dry stages southwest monsoon was weak and summer monsoon in East Asian was enhanced. On the contrary ,n the conditions of temperate(warm)-wet stages southwest monsoon was strong and summer monsoon in East Asian was weak in the conditions of temperate(warm)-wet stages.There were three cold events in the records from Erhai Lake sediment: 7.2kaBP, 5.3kaBP and 3.7 kaBP. The cold-dry or wet stages were affected by the intensification of winter monsoon in Asian.