Climate measures for drained organic soils

Although drained organic soils make up only six percent of Norway's agricultural land, they are responsible for emitting 2.4 million tonnes of CO₂-equivalents annually, equivalent to one-third of the country's total agricultural emissions. As of 2020, a ban on cultivating new peatlands has been the only measure to limit emissions from cultivated organic soils in Norway.

NIBIO researchers have evaluated the effectiveness of additional measures based on both national and international studies. The report explores options such as the restoration of drained soils, methods to reduce emissions while keeping the land in agricultural use, and the impacts, duration, and barriers associated with these measures.

Dr Simon Weldon highlights promising approaches such as peatland restoration, paludiculture (cultivation of crops on wet peatlands), and covering peat soil with mineral materials.

"When combined, these measures can have a significant impact on emissions. However, results will vary depending on local climate, topography, and the type of peatlands."

He emphasizes the need for further research, Norwegian-specific data, and technological adaptations for implementation.

"Method development and field validation are essential to address climate, agricultural, and economic challenges. Without precise measurement methods and proper documentation, it will be challenging to ensure that emissions reductions from these measures are accurately recorded and approved in the national greenhouse gas inventory.”