Soil quality depends on the kind and number of nutrients in aerial, litter and underground tissues of the plants. Therefore, studying the status of range species in view point of their nutrient condition, C/N ratio, and decomposition velocity will help us to select suitable species in vegetation development plans. This study was performed to find suitable plant based on its effects on soil properties in Zarand-e-Saveh rangelands. For this purpose, two vegetation types including Stipa barbata and Salsola rigida-Artemisia sieberi were considered for investigation. In each type key areas were determined and soil and plant sampling were performed within these areas. In each type 3 transects each including 10 plots were established. Number and length of transects and number and area of plots were determined according to types and vegetation condition. Floristic list, vegetation percentage of species, and gravel percentage were recorded in all of plots. Also, the current year growth, root and litter of species were gathered. In starting and ending points of the transects soil samples were taken from 0-20 and 20-50 cm layers. Soil and plant samples were analyzed in laboratory. The properties of C, N, P and K were determined for plant samples. Texture, OM, Ec, pH, N, P, K and lime were measured in soil samples.
Totally, results showed that A. sieberi has lower C/N ration while its nutrients are higher than S. barbata and S. rigida. So, it could be concluded that A. sieberi is suitable plant in view point of its affecting on soil quality.