Hydrochemical Characteristics and Evolution Laws of Shallow Groundwater in Shuangliao City

Shuangliao City is an important part of the Xiliaohe Plain, and one most bases grain production in north China. Therefore, it to ascertain hydrochemical characteristics groundwater their causes evolution laws Plain provide guidance agriculture development ecological improvement. After collection detailed data identification flow field, we studied identified types by zone with mathematical statistics, correlation analysis, ion proportional coefficient other methods. The results show that concentrations HCO3-, Cl-, Na+ are relatively high, these Ca2+, Mg2+, SO42-, NO3- low. concentration TDS increases gradually along direction groundwater, positively correlated variation Na+, SO42-. Along hydrochemistry shallow law from HCO3-Ca·Mg HCO3·Cl-Na·Ca HCO3·Cl-Na·Mg, then Cl·HCO3-Na·Mg. formed mainly due mineral dissolution deposition, reaction cation exchange adsorption aquifer, hydrogeochemical processes include leaching, evaporation concentration, mixing.