Due to the wide distribution of arid and semi arid area their soils has effected by numerous limitations. One of the most important limitation of these soils are their high salinity. Therefore,the most of plant cannot grow at these kind of soils. Atriplex lentifromis is a halophite range plant that the pruning of Atriplex increase the biomass. According to the accumulation of salts is in Atriplex aerial organs so, by including the residual plant from the region, it assumes that salinity will be reduced in the soil. In studies to investigate the effect of different intensites of Atriplex lentifromis pruning on salinity changes of soil at Chah Afzal Ardekan. An experiment performed in the split plot plan. Some hysical and chemical characteristics of the under shadow of atriplex soil which has affected by different degree of pruning are measured. region is divided to three blocks and three plants have chosen and cutted from each block. , The soil were sampled at the four depths(0-30, 30-60, 60-90, 90-120). Because of planting Atriplex on the river floors, the first 20cm of bare soil surface and sampling was performed at four depths. Totally, 189 soil samples provided and salinity, pH, SP, Ca, Na, Mg, K, Cl, HCO 3 - solution, osmotic potential soil salt percentage, soudium absorption ratio, exchangeable sodium and soluble alt percentage were measured. Base on the results it is 1 - Atriplex lentiformis can reduce soil salinity.2- soil salinity reduction reduction was effective only to 60cm depth of the soil. 3-The measured soil characteristics were not influenced significantly by different pruning treatment. The results showed that soluble Na is more than CL contentration in Atriplex lentiformis leafs,
