The Pars Special Economic Energy Zone (PSEEZ) is one of the largest gas reserves in the world. To reduce the CO2 emission from the area in line with the international climate commitments, two groups of scenario have been developed: the first is using the ecosystem services of mangrove forests, and the second is technology development for oil and gas industries. For the first scenario, the carbon sequestrated by the trees was calculated using the allometric equation, and the carbon of sediments was determined by using the Walkley-Black method. For the second scenario, CO2 emitted from the PSEEZ was calculated by using the Iranian Petroleum Ministry Guidelines. CO2 emission from the PSEEZ was 0.030 Gt year-1. The maximum CO2 sequestered by mangrove scenarios was 0.12% of the PSEEZ emissions, while the flaring elimination technology reduces 36% of the PSEEZ emissions. Generally, the scenario of using oil and gas industry technologies is more effective.
Keywords: CO2 emission; Ecosystem services of mangrove forest; Pars Special Economic Energy Zone (PSEEZ); Scenario-based planning.