the effect of planted saltbush (atriplex lentiformis) on edaphic factors in grazed and ungrazed area

re-vegetation of bare soil is believed to increase, or at least maintain the organic matter levels of soil. the aim of this study was to investigate the soil characteristics changes, nutrient pool sizes and their availability under mid canopy, and canopy gap positions of saltbush in an area re-vegetated with atriplex lentiformis. some of the physical and chemical soil characteristics (the particle size distribution, soil bulk density, ec, ph, na, k, organic c, n, p, c/n ratio and c/p ratio) were measured in two different soil depths at both planted shrublands and control area. the results from samples analysis showed that the soil of the control area is significantly different from the atriplex shrublands area. maximum of k and na proportion were measured in 0 to 20 cm under mid canopy in the planted sites. k and na in different soil layer showed a significant difference between ungrazed area, grazing area and control area (p