ENVIRONMENTAL ISOTOPIC CHARACTERISTICS OF GROUNDWATER IN WESTERN LIAOHE PLAIN IN INNER MONGOLIA

Based on the isotopic testing result of the groundwater, river water and rain water from the Western Liaohe plain (of Inner Mongolia part) in 2003, the distribution characteristics of isotopes and the recharge-drain relations of groundwater in the region are analyzed. The average ages of groundwater from different river basins are calculated by the concentration of ³H in the shallow groundwater. The ¹⁴C ages and the regional velocities of the confined water are also calculated according to ¹⁴C data.