Methane flux dynamics in an Irish lowland blanket bog

摘要: Pristine peatlands are a significant source of atmospheric methane (CH4). Large spatio–temporal variation has been observed in flux rates within and between peatlands. Variation is commonly associated with water level, vegetation structure, soil chemistry climatic variability. We measured spatial temporal CH4 fluxes blanket bog during the period 2003–2005. The surface was composed different communities (hummocks, lawns hollows) along level gradient. were each community using chamber method. Regression modelling used to relate environmental variables integrate over study period. Water strongest controller variation; average rate lowest hummocks highest hollows, ranging from 3 53 mg m−2 day−1. In permanently high amount species composition also good indicator rate. clear seasonal that chiefly controlled by temperature. annual (6.2 g year−1) similar previous estimates bogs continental raised bogs. No interannual observed.