Removal and release of GHG (mostly CO2) from land-use and land-use changes are included in Norway’s GHG accounting and reporting to the UNFCCC. Forest growth has generated a sizeable CO2 sink, which has increased since 1990, even after CO2 emissions from other land-use changes that release carbon are subtracted. In the ‘50s and ‘60s major tree planting campaigns led to a growing forest biomass over the last decades (some 70% of the carbon is contained in the soil). On the other hand, more land-use for infrastructure such as buildings and roads, and new agricultural land, such as draining of swamps, have contributed to emissions of GHG. Altogether, the net removal (the sink) of GHG from forest and other land-use was estimated at 20 million tonnes of CO2e in 2020.
In Sweden, GHG emissions from the agricultural sector were 6.7 million tonnes in 2021. The emissions, which mainly consist of methane and nitrous oxide from animal feed digestion, manure handling and nitrogen conversion in agricultural land, have remained at about the same level since 2005 but have decreased by 13% since 1990. The main reasons why emissions have fallen since 1990 are increased productivity and reduced animal husbandry of mainly dairy cows and pigs and, to a lesser extent, reduced use of mineral fertilisers. The agricultural sector's emissions are estimated to decrease slightly as a result of a reduced number of animals and reduced cultivated area, assumptions about increased productivity and lower product prices are explanations behind the result. The sector contributes significantly to the remaining emissions in 2045.
During the period 1990–2021, the land-use sector reported an annual net removal of between 35 and 50 million tonnes of CO2e, with a decreasing trend in the last decade mainly linked to a reduced growth in living biomass on forest land. According to the tightened LULUCF regulation, the net removal in the Swedish LULUCF sector must end up at a level that is approximately 4 million tonnes of CO2e higher in 2030 compared to the average level during the base period (2016–2018), which means a total net removal of 44 million tonnes in 2030.
The largest net removals occur through the storage of carbon dioxide in trees on forest land (25 million tonnes in 2021), mineral soil (16 million tonnes in 2021) and the storage of carbon in harvested wood products (9 million tonnes).
The development of net removal is associated with very large uncertainties. A 2023 assessment by Swedish EPA includes four different scenarios for the LULUCF sector, with different assumptions about harvesting levels and biomass growth, illustrating the sensitivity of the results. The different assumptions give results with a relatively wide spread; the net removal varies between 20–45 million tonnes of CO2e in total for the LULUCF sector on average during the period 2020–2050.
The largest net emissions in the LULUCF sector occur from peatlands with drainage ditches on forest land, arable land and land exploited for buildings and infrastructure. Peatlands with drainage ditches on forest and agricultural land are estimated to cause an annual emission of just over 9 million tonnes of CO2e.