3、Quan Cheng, Zhang Shuqin and others used plants and sporopollen fossils for the first time to find out the response of the paleoclimate changes in the Oligocene and the vegetation of Changbai Mountain in the Late Pocene to global climate deterioration.

　　　　　　　　　　　　　　　　　　　　　　　Late Cenozoic palynofloras in Changbai Mountain area