ϵͳ�о���������ʼ����ֲ���߷۵������������ù������ӷ����������ؽ�����ʼ��������仯��ͨ����ϸ������ͳ�ƣ�������ʼ��������鹲�������߷� 85 �� 100 �֣��Ա���ֲ�ﻨ��ռ�������ƣ������ݷۡ�鲷ۡ���ľ�ۺ��ܷۺ����ϸߣ�����ֲ�ﻨ�ۺ�ާ��ֲ�����Ӻ����ϵͣ��߷�������ȴ�- - ���ȴ����ӽ϶࣬�����������´������ȴ����������ȴ���ůʪ������ͨ�����������õ�������ʼ�����������: �����Ϊ 13. 6�� �� 18. 4�桢�����¾��� 23. 6�� �� 27. 9�桢�����¾��� 5. 5�� ��7. 8�桢�꽵���� 887 �� 1 206 mm����ʪ�½����� 187 �� 236 mm������½����� 16 �� 41 mm������ů�½����� 45 ��143 mm����Ƚ��ڼ��ֶ����������ʼ�������߷�ֲ��Ⱥ�͹����򣬲��첻�󣬾������͵���ůʪ������򻷾���

This paper systematically studies the Eocene palynological characteristics in Huadian Basin��and quantitatively reconstructs the Eocene climatic change��adopting method of the Coexistence Approach (CA)�� 85 genera and 100 species are identified in the Eocene Huadian Formation��which indicates that the palynoflora is characterized by the dominance of angiosperm pollen��and Quercoidites��Alnipollenites��Ulmipollenites and Tiliaepol- lenites are overwhelmingly predominant among the angiosperm pollen�� The contents of gymnosperm pollen and fern spores are lower�� The palynological assemblages show that the tropical- subtropical taxa are some abundant��while lower than temperate and subtropical taxa in contents��which indicates a northern subtropical warm and humid cli- mate�� The Eocene climate of Huadian Basin is quantitatively reconstructed by the Coexistence Approach��in which the MAT (13. 6 ��18. 4��)��MWMT (23. 6�� ��27. 9��)��MCMT (5. 5�� ��7. 8��)��MAP (887 ��1 206 mm)�� HMP (187 ��236 mm)��LMP (16 �� 41 mm) and WMP (45 �� 143 mm) are estimated�� The comparison of pa- lynofloras and palaeoclimates between the Huadian and Hunchun basins in eastern Jilin Province suggests that the Eocene climates of the two basins are very similar��i�� e�� both are warm and humid��