The aim of this study was to conduct the first comprehensive evaluation of carbon stock in the sediments of Avicennia marina (black mangrove) and Rhizophora mucronata (red mangrove) along the coastline of an arid region (Farasan Islands, Saudi Arabia). Such information is necessary for the development of any management plan for the mangrove ecosystems along the Saudi Red Sea islands and provide a rationale for the restoration of mangrove forests in Saudi Arabia. A. marina and R. mucronata locations showed significant (P < 0.001) differences in sediment bulk density (SBD) and sediment organic carbon (SOC) concentration with higher mean values for both in the sediments of A. marina. Considering the whole depth of sediment sampled (0–50 cm), the highest value of SOC stock (12.3 kg C m⁻²) was recorded at A. marina locations and the lowest (10.8 kg C m⁻²) at R. mucronata locations. Thus, the SOC stock of A. marina was greater than that of R. mucronata by 114.3%. Consequently, considering the rate of carbon sequestration and the area of mangrove forests (216.4 ha), the total carbon sequestration potential of mangroves in the Farasan Islands ranged between 10.3 Mg C yr⁻¹ and 11.8 Mg C yr⁻¹ for R. mucronata and A. marina locations, respectively. Thus, it is necessary to protect and restore these ecosystems for the sequestration of carbon and for their other valuable ecosystem services.

这项研究的目的是对干旱地区（法拉桑群岛，沙特阿拉伯）海岸线上的Avicennia滨海地区（黑红树林）和Rhizophora mucronata（红树林）的沉积物中的碳储量进行首次综合评估。这些信息对于制定沙特红海沿岸红树林生态系统的任何管理计划都是必要的，并为恢复沙特阿拉伯的红树林提供了依据。A.码头和R. mucronata位置显示显著（P <0.001）在沉积物堆积密度（SBD）和沉积物的有机碳（SOC）与浓度为无论是在沉积物较高的平均值的差异A.码头。考虑到整个沉积物深度（0–50 cm），在滨海曲霉位置记录的SOC最大值（12.3 kg C m ^-2），在R. mucronata记录的最小值（10.8 kg C m ^-2）位置。因此，对SOC股票白骨壤比更大的R. mucronata的114.3％。因此，考虑到固碳的速率和红树林（216.4公顷）的区域，在法拉桑群岛红树林的总碳封存潜力10.3的MgÇ年介于^-1和11.8的MgÇ年^-1为R. mucronata和A.码头位置。因此，有必要保护和恢复这些生态系统，以固碳和其他有价值的生态系统服务。