Wetlands are significant contributors to global methane (CH₄) emissions, a critical factor in climate change. However, the spatial heterogeneity of CH₄ fluxes and the driving mechanisms within these wetland ecosystems remains largely unexplored. This study examines the heterogeneity of CH₄ emissions from two wetland types: a constructed wetland designed for treating agricultural runoff and a peatland site that was abandoned in 1999 when mining activities stopped. However, restoration work began two years ago. Utilizing LI-7810 trace gas analyzer with closed chambers, we quantified the fluxes of CH₄ in both wetlands, revealing significant variations from gas measurement points. In the constructed wetland, biweekly measurements from twelve distinct points revealed significant heterogeneity in methane fluxes, with peak emissions ranging from 6000 μg m^-2 h^-1  to 106000 μg m^-2 h^-1 observed from specific gas measurement points. This heterogeneity was predominantly influenced by differences in ebullition fluxes, and environmental factors, which include water level depth, temperature, and leaf area index. In contrast, the re-wetted peatland showed a lower range of CH₄ emissions (4 μg m^-2 h^-1 to 1444 μg m^-2 h^-1) observed from six measurement points. These findings highlight the complex nature of methane flux heterogeneity in wetlands and the critical need for site-specific management strategies. Accurately quantifying and understanding these variations is essential for refining methane budgets and developing effective mitigation strategies for greenhouse gas emissions from wetland ecosystems.