通过对河西地区盐渍化草场土壤水分、盐分动态的观测分析，结果表明：随着外界条件的变化，土壤水分的变化主要发生在０～４０ ｃｍ 范围内，４０ ｃｍ 以下基本保持稳定；土壤盐分随着水分的变化基本也在０～２０ ｃｍ 范围内上升或下降运动；地下水位在１２～１８ ｍ 之间变化，矿化度维持一个较高的水平 Through the observation and analysis of the soil moisture and salt dynamics in the salinized grassland in Hexi Region, the results show that with the change of external conditions, the change of soil water mainly occurs in the range of 0-40 cm and basically keeps stable below 40 cm. The soil salinity With the change of water content, it also basically moves up or down within the range of 0-20 cm. The groundwater level changes between 12 and 18 m, and the salinity maintains at a high level