Forests in Finland were a source of emissions in 2023 because trees did not sequester enough carbon dioxide from the atmosphere to offset emissions from the soil, indicate preliminary data from the greenhouse gas inventory released on Wednesday by Natural Resources Institute Finland (Luke). The data suggest that forests added 1.12 megatonnes of carbon-dioxide equivalents to the atmosphere in 2023, accounting for roughly 10 per cent of net emissions from the land-use sector. Luke estimates based on the latest data that forests became a source of emissions in 2021. The entire land-use sector, meanwhile, turned from a sink into an emitter in 2018 as a result of increasing logging, growing emissions from forested peatlands and contraction of the sink of mineral soil. The carbon sink of the sector had begun to contract in 2010.