Increased logging raises concerns in Sweden and Finland amid data discrepancies

Increased logging in Europe, particularly in Sweden, has become a significant concern, highlighted by a study commissioned by the European Commission four years ago. This study, published in the journal Nature, utilized satellite data from Global Forest Watch and claims that Sweden and Finland are responsible for over half of the logging increase in Europe.

Recent reports indicate that forest land in Sweden has decreased by 20%. However, investigations into geodata and satellite imagery reveal discrepancies in these claims, leading researchers to challenge their validity. Jonas Fridman, a forest management expert at the Swedish University of Agricultural Sciences, expressed frustration over the misrepresentation of data in sensational headlines.

Fridman emphasized that while logging activities have risen due to an increased demand for timber—partly driven by pandemic-related renovations and the impact of Russia’s invasion of Ukraine—the volume of timber per hectare in Sweden has also substantially grown. Currently, Sweden has twice the timber volume per hectare compared to a century ago.

The political discourse surrounding forestry has intensified, especially as Sweden aims to meet EU climate objectives, including binding an additional 10% of carbon dioxide and preserving biodiversity. The Swedish Forest Agency’s data indicates that nearly 70% of Sweden’s land area is forested, with approximately 1% harvested annually.

Discrepancies in Global Forest Watch data arise from differing algorithms and regional adaptations. A review comparing registered deforestation with historical satellite images showed instances where logging was recorded without any visible changes on these images. Moreover, thinning practices were often misclassified as logging, skewing deforestation statistics.