Peatland carbon mapping: two years of research in work package 1

Work package 1 in Repeat has been ongoing for over two years, and recently we took stock to summarize the activity up to now.

In the first work package, we have improved estimates of the amount of carbon in Norwegian peatlands. We started in 2022 with depth probing, ground-penetrating radar, and soil analysis in two areas of peatland (Turufjell, Okla). These data offer insights for optimizing the precision of carbon stock estimates. For instance, we assessed whether integrating terrain-based hydrology improves radar calibration, and presented these findings at a scientific conference.

In 2023, we concentrated solely on peat depth, examining a third, larger area (Ørskogfjellet) to evaluate existing map accuracy and develop predictive models with remote sensing. Although peat depth remains unpredictable, our digital soil mapping improved existing maps available for land use management. We shared these findings with partners and stakeholders via webinars and presentations.

Peatland mapping turns up a variety of surprises -- in peat depth and otherwise. Here from the Ørskogfjellet site (Vestnes Municipality, Møre og Romsdal County). Photo: Sigurd D. Nerhus

The distinctive blanket bogs of coastal western Norway, pictured here at Okla (Stad Municipality, Vestland County), represent a unique peatland type in the Norwegian landscape. Photo: Karl-Kristian Muggerud