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Publications

NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.

2025

Abstract

Oppsumering av det nasjonal klimagassregnskap rapportering for arealbrukssektoren til FN, hvordan det gjennomføres, utvikling av skogens netto opptak av CO2 over tid, betydning av arealbruksendring på skog, framskrivning av skogens utvikling, betydning av metodiske forbedringer.

To document

Abstract

Latest data from National Forest Inventories raise doubts about whether European forests will provide the greenhouse gas sink strength that is targeted by the Regulations on Land use and land-use change. We propose measures to maintain the forest carbon sink strength and provide information for the time horizons for achieving the targets. The recommendations aim at facilitating evidence-based decision making.

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Abstract

The background for this study is the limitations of the conventional approach of using deforestation area multiplied by biomass densities or emission factors. We demonstrated how TanDEM-X and GEDI data can be combined to estimate forest Above Ground Biomass (AGB) change at the national scale for Tanzania. The results can be further recalculated to estimate CO2 emissions and removals from the forest. We used repeated short wavelength, InSAR DEMs from TanDEM-X to derive changes in forest canopy height and combined this with GEDI data to convert such height changes to AGB changes. We estimated AGB change during 2012–2019 to be −2.96 ± 2.44 MT per year. This result cannot be validated, because the true value is unknown. However, we corroborated the results by comparing with other approaches, other datasets, and the results of other studies. In conclusion, TanDEM-X and GEDI can be combined to derive reliable temporal change in AGB at large scales such as a country. An important advantage of the method is that it is not required to have a representative field inventory plot network nor a full coverage DTM. A limitation for applying this method now is the lack of frequent and systematic InSAR elevation data.