Data of chemical characteristics and reactive transport analysiss of salt ions during freeze and thaw period in Yonglian area

The soil samples were collected in Yonglian experimental station of Hetao Irrigation District, Inner Mongolia Autonomous Region, China, to measure the change of total soil water, soil salt and its ion components. Using these data sets, the FREZCHEM model was used to calculate the soil water and salt content in liquid and solid phases, and then the HYDRUS-1D model was used to simulate the movement of liquid soil water and soluble salt. And the potential migration capability of soil water and salt components were then estimated by comparing the distribution profiles obtained by HYDRUS-1D and FREZCHEM.