The journal news feed presents the editors’ condensed summaries of key findings from selected scientific papers from SNS’ two scientific journals Scandinavian Journal of Forest Research and Wood Material Science & Engineering.
Journal news feed from Scandinavian Journal of Forest Research (SJFR) Volume 29, thumb Issue 5, 2014 reviews the five interesting new research articles.
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Forest certification is a communication issue
A large part of the Nordic forests is certified according to one of the two standards, FSC or PEFC. However, implementation is not always easy since so many partners are involved and need to be coordinated during the process. This study focused on implementation, based on interviews with stakeholders in Sweden. One conclusion was that communication and information logistics, from top management to contractors in the field, are critical for meeting the certification standards.
Severe storm felling did not change forest owners’ behavior
We have previously reported on the study by Lidskog and Sjödin (issue 29-3), who concluded that forest owners continued to plant spruce after the severe storm Gudrun in Sweden, despite the higher risk of storm felling. Their conclusions now gain the support of statistics from the Swedish National Forest Inventory. Valinger et al. found that the choice of species for regeneration was the same after the storm as before. They also found that thinning activities increased after an immediate drop, and that the area in immediate need of pre-commercial thinning increased considerably.
Roadless forests may indicate high conservation values
Forests close to the timberline in northern Sweden have a short history of management. Even so, these forests have fewer red-listed fungi compared to nearby natural landscapes. This finding is reported in a study comparing managed and natural forests. The authors found a negative correlation between abundance of red-listed species and human impact, as well as with the presence of forest roads. Areas with few forest roads could therefore be used as an indicator to pinpoint still-intact forest landscapes.
Harvest slash can reduce traffic impact – to some extent
Soil disturbance resulting from heavy forest traffic is a universal problem. This study from Iran compared the impact of skidding traffic on trails with no, thin and thick slash layers. The thick slash layer protected the soil, but the benefits were limited to five passes of the machinery.
Climate warming increases birch growth in Siberia
Long-term inventory data (1897–2006) shows that birch forests in western Siberia is far more well-stocked today than a century ago. The mean volume of the birch stands has increased from 63 to 220 m3 per hectare. The growth data coincides with an increase in the length of the vegetation period, reduced soil moisture within the birch stands and increased CO2 levels.