Ecosystems are providing a wide range of services. It is, therefore, important to conduct research for measursement, quantification and valuation of these services aiming to find comprehensive approaches toward sustainable development. Maintaining carbon stocks in biomass and soils as a function of the ecosystem is nowadays critical to its role in mitigating the effects of climate change through the regulating atmospheric gases (carbon sequestration and oxygen emission) and maintaining the carbon cycle equilibrium. Although, sevral rehabilitational projects have been executed to deal with environmental disorders but economic studies on this issue have been rarely done. The aim of this study is economic valuation of carbon sequestration in Sejzi Haloxylon plantation area where is located in the northwest of Isfahan province. Four homogenous units are determinded based on Haloxylon coverage condition, in the study area: good, medium, poor and extremely poor. Underground and aboveground biomass of Haloxylon individuals and thier carbon content was estimated using non-destructive method and applying allometric models. Soil and litter organic carbon content are measured via Walkley-Black method and combustion in furnace, respectively. Replacement cost method was used for economic valuation of total amount of sequestrated carbon. The results show that the economic value of atmospheric gases regulation function, is equal to 111 million US dollars in terms of carbon sequestration and 162 million US dollars in terms of oxygen emission. Also results highlighted the role of the Sejzi plantations in gas regulation which can justify some costs of plantation projects