Groundwater exploitation setup and seepage field changesin Shanghai

The groundwater level change is the key factor for land subsidence in Shanghai.At present,the groundwater exploitation setup have many new changes,such as daily concentrating in the deep aquifer and engineering precipitation in the large scale of the shallow aquifer and some effects of exploitation in the neighbor provinces,so the seepage field have advisable changes.It is the key procedure that the systematic management of groundwater is to be strengthened furthermore for controlling the deep ground level sedimentation.