Dynamic changes of shallow groundwater in the plain area of Henan Province from 2001 to 2016
In the plain area of Henan Province,groundwater has been in a state of high intensity exploitation for more than 20 years,resulting in the continuous decline of ground water table and the continuous increase of groundwater burial depth.Since 2011,with the changes of water resources conditions,groundwater withdrawal and other factors,As well as the develop-ment of underground water pressure exploitation and comprehensive treatment of over-exploitation in the receiving area of Henan Province and the covered area of the public water supply network of the middle route of the South-to-North Water Transfer project,the over-exploitation of groundwater in the plain area has also changed obviously.980 shallow groundwater monitoring stations with relatively complete monitoring data were selected,and the selected periods were the evaluation period(2001-2016)and 2017-2018(reasonably extended to reflect the long-term trend of groundwater change,the effect of the South-to-North Water diversion project and underground water pressure production).According to the statistical analy-sis,the shallow groundwater dynamic is dominated by a downward trend,with an average rate of 0.057 m/a and a maximum rate of 1.297 m/a.
NETL
NSTL
万方数据
