Research on the climatic change during the Holocene in Northeastern China

Holocene climatic change is the sensitive topic in the northeastern China.Research of the close relationship between the vegetation and the climate of the study area shows the climatic change during the Holocene can be divided into three stages,that is,early Holocene climate change from 10000 to 8000yr,middle Holocene climate change from 8000 to 2500 yr,and the late Holocene climate change from 2500 yr to modern days.At the meanwhile,several important research topics are discussed in this paper,about which environmental indexes research,the climate change limit,the influence of the human activities,and also the other study methods.