Mangroves are important blue carbon ecosystems.During the restoration processes,the carbon exchange processes of mangroves are affected by climate and vegetation factors,thus show different characteristics from those of mature mangroves.In this study,we observed the characteristics of CO₂ and CH₄ fluxes from a restored mangrove at Pearl River estuary based on the closed-path eddy covariance system.We further analyzed the influences of environmental factors on carbon fluxes by path analysis method.The observations showed significant diurnal variations in CO₂ fluxes.There were no significant seasonal variations in CO₂ fluxes due to the collaborative impact of Gross Primary Productivity (GPP) and ecosystem respiration (R_e).The seasonal variations of CH₄ fluxes were significant.During 2019-2020,the annual CO₂ fluxes were 79.4-138.4 g·m^-2·a^-1,and the annual CH₄ fluxes were 25.1-25.9 g·m^-2·a^-1.Path analysis showed that GPP directly influenced the seasonal variation of CO₂ fluxes.The radiation (R_a),air temperature (T_a) and vegetation index (NDVI) had indirect impact on CO₂ seasonal variations.While seasonal variations of CH₄ fluxes were directly influenced by T_a,R_e and NDVI.