Rangeland ecosystems have a high potential for carbon sequestration because of their large expanse. In this research, the economic valuation of the function of carbon sequestration was studied with the use of species of Pteropyrum aucheri in their habitat zone in north east of Isfahan Province Random-systematic. Sampling of the plant was done with respect to its aerial, underground and aerial parts. The Valky Black method was used in order to determine percentage of organic carbon, and the amount of carbon sequestration was calculated as 66.49, 61.21 and 58.05 kg respectively. In order to determine the amount of carbon sequestration of the soil, sampling was done from two different depths of 0-15 and 15-30 cm and soil texture and organic matter was measured. Results showed that in the Pteropyrum aucheri mass there was 36.92 tons per Hectares carbon sequestration in the soil. Study of the amount of carbon sequestration in two depths of soil showed that carbon sequestration in the first layer was more than the second layer. The results of correlation between soil texture and the amount of carbon sequestration indicated that organic matter, percentage of clay, and sandy are the most important affective components in carbon sequestration of the soil respectively. Then with the use of carbon dioxide photosynthesis formula and based on carbon sequestration aerial biomass, litter and soil in the whole habitat were 136.93, 62.21 and 652876 Kg and oxygen amount was estimated as 187.3 85.14 and 893533 Kg in the whole habitat respectively. Furthermore, to valuate the amount of carbon sequestration, the Alternative Cost method was used and the value of sequestration function of per tocarbon based on various sources was considered 23 dollars. In this study, the value of stored Carbon function with the use of a 5-years-old Pteropyrum aucheri base in the studied area with the central bank and free rate of dollar was 190302 and 607154 rials respectively and the value of Carbon sequestration function in whole soil of the area with the central bank rate of dollar was 6.3 billion rials and with free rate of dollar was 20 billion rials. Moreover, the value of function of oxygen production in the process of carbon sequestration of Pteropyrum aucheri bases of the area was 1.03 million rials and the value of oxygen produced by Carbon sequestration of soil of the area was calculated as 46 billion rials. Considering that the studied area is not irrigated and the water required by the plant Pteropyrum aucheri is through the rain, so the irrigation cost was not included. Results show the importance and significance role of rangeland ecosystems in regulating gases and can be used in corrective planning and actions and controlling land degradation process. Keywords: Organic Carbon, Carbon Sequestration, Evalution, Replacement cost, Pteropyrum aucheri carbon based on various sources was considered 23 dollars. In this study, the value of stored Carbon function with the use of a 5-years-old Pteropyrum aucheri base in the studied area with the central bank and free rate of dollar was 190302 and 607154 rials respectively and the value of Carbon sequestration function in whole soil of the area with the central bank rate of dollar was 6.3 billion rials and with free rate of dollar was 20 billion rials. Moreover, the value of function of oxygen production in the process of carbon sequestration of Pteropyrum aucheri bases of the area was 1.03 million rials and the value of oxygen produced by Carbon sequestration of soil of the area was calculated as 46 billion rials. Considering that the studied area is not irrigated and the water required by the plant Pteropyrum aucheri is through the rain, so the irrigation cost was not included. Results show the importance and significance role of rangeland ecosystems in regulating gases and can be used in corrective planning and actions and controlling land degradation process. Keywords: Organic Carbon, Carbon Sequestration, Evalution, Replacement cost, Pteropyrum aucheri