���ݳ����е���ˮ�۲⾮�Ķ�̬������ϣ������˳�������Ҫ����ˮ���͵Ķ�̬�仯���ɼ�ԭ��2000 ���Ժ󣬵���ˮλ���ڻ���״̬����ɢ�����϶ˮˮλ����ֵ�������0. 16 m��������϶ˮ�������0. 78 m������Ҫԭ��Ϊ���ƿ����������͹۲��ˮλ����仯���ƹ�ʽ������dz�����ˮˮλ������������أ����ͺ�������1 �� 1. 5 ���¡�

Based on dynamic monitoring data of groundwater observation wells��the authors analyzed the dynamic variation trend and reason of main groundwater type in Changchun�� Since 2000��the groundwater level has been in picking up state��and the depth of pore-water decreased for 0. 16 m in loosening rocks and about 0. 78 m in bedrock fissure water reduccd for each year��which was mainly caused by exploitation restriction of groundwater�� The tendency of groundwater level of typical observation holes shows the groundwater level in shallow layer is closely related to air temperature��but there is a response lag for about 1 �� 1. 5 months��