هانا اعتمادی

Considering land-use strategies and options to increase and promote carbon sequestration, evaluating and studying carbon in ecosystems is an important step in measuring carbon inventory. Among carbon capture ecosystems, mangrove forests are one of the most productive, with the ability to sequestrate carbon 50 times more than other tropical forests. Pars Special Economic Energy Zone (PSEEZ) in Assaluyeh, where oil, gas, and petrochemical activities have been started since 2002 and full development of the area is planned for about 24 phases of gas refineries and numerous petrochemical plants. It is one of the major current and future greenhouse gas installations in Country. The CO2 emissions from these industries are about 30 million tons/year. Nayband Bay at the coastal end of Bushehr province has two important mangrove ecosystem, Assaluyeh and Besatin, adjacent to PSEEZ. To sequestrate emitted CO2 from PSEEZ Facilities, parallel with the country's climate commitments, and to save on carbon management plans, the natural potential of Nayband Forests in carbon sequestration can be used. To study the current and potential carbon stock of mangrove forests in the region, also comparing this potential with a CO2 emission rate from PSEEZ, sampling of Assaluyeh and Basatin forests in November 2019 was performed. The carbon content of the vegetation was determined by the furnace method and the Allometry equations and carbon content of the sediments were determined by the Walleye Black method. Particle size was determined by sieve and hydrometer methods. SPSS, XLSTAT, and GRADISTAT were used for data analysis. The results of this study showed that carbon stock values in Asaluyeh, Basatin and Malgonzeh forest were 796.32, 740.89 and 640.14 ton/ha, respectively. The current rate of carbon sequestration in the Assaluyeh and Basatin forests was 6.31 and 3.03 tone/ha respectively, equivalent to 34.32 tons/ha of CO2 equivalent per year. Carbon content in sediments and vegetation amo