摘要: Global numerous wetlands are the most productive ecosystem and have high carbon sequestration potential to mitigate increasing CO₂ in the atmosphere. However, few are available on estimating average carbon sequestration rates by global wetlands (Carbon_sq) at century timescale. In this article, Carbon_sq data of 473 wetland soil/sediment cores from the literatures were collected in detail by the meta-analysis method. These cores were no more than 300 years old and spanned a latitudinal range from 33.6° S to 69.7° N. Globally, the average Carbon_sq was 185.2 g/(m²·yr) regardless of wetland types. Carbon_sq varied remarkably between wetland types and ranked as an order of salt marsh (247.7 g/(m²·yr)) > mangrove (229.8 g/(m²·yr)) > freshwater marsh (196.7 g/(m²·yr)) > peatland (76.9 g/(m²·yr)). Carbon_sq was positively related to mean annual temperature (AMT) and annual precipitation (Pre). Nitrogen was the most common and primary factor controlling Carbon_sq regardless of wetland types.