The Analysis on Hydrochemistry Environment Evolvement of Pore Groundwater in Shallow Aquifer in LuoYang City

Aiming at the fact that the hydrochemistry environment of shallow groundwater becomes worse and worse in the past ten years in LuoYang. On the basis of large amounts of test and observation datum, the paper analyze the cause form the lithology of aquifer, the recharge, discharge of groundwater and human engineer activity and make the following conclusion: the purification capacity on many contaminations of river lithology can exceed 90%, except for NO₃^-. The unsaturated-zone have strong capacity to purify some heavy metal, but have low capacity to purify Cl. The river in area control the evolvement of groundwater environment by diluting and water quality of river-water. The large exploitation and pollution of industry and agriculture has become the current main force to control environment evolvement of groundwater, and prick up the depravation of groundwater environment.