NDLI: Greenhouse gas emissions from forestry in East Norway

Content Provider	Springer Nature Link
Author	Timmermann, Volkmar Dibdiakova, Janka
Copyright Year	2014
Abstract	So far no calculations have been made for greenhouse gas (GHG) emissions from forestry in East Norway. This region stands for 80 % of the Norwegian timber production. The aim of this study was to assess the annual GHG emissions of Norwegian forestry in the eastern parts of the country from seed production to final felling and transport of timber to sawmill and wood processing industry (cradle-to-gate inventory), based on specific Norwegian data.The life cycle inventory was conducted with SimaPro applying primary and secondary data from Norwegian forestry. GHG emissions of fossil-related inputs from the technosphere were calculated for the functional unit of 1 m$^{3}$ timber extracted and delivered to industry gate in East Norway in 2010. The analysis includes seed and seedling production, silvicultural operations, forest road construction and upgrading, thinning, final felling, timber forwarding and timber transport on road and rail from the forest to the industry. Norwegian time studies of forestry machines and operations were used to calculate efficiency, fuel consumption and transport distances. Due to the lack of specific Norwegian data in Ecoinvent, we designed and constructed unit processes based on primary and secondary data from forestry in East Norway.GHG emissions from forestry in East Norway amounted to 17.893 kg CO$_{2}$-equivalents per m$^{3}$ of timber delivered to industry gate in 2010. Road transport of timber accounted for almost half of the total GHG emissions, final felling and forwarding for nearly one third of the GHG emissions. Due to longer road transport distances, pulpwood had higher impact on the climate change category than saw timber. The construction of forest roads had the highest impact on the natural land transformation category. The net CO$_{2}$ emissions of fossil CO$_{2}$ corresponded to 2.3 % of the CO$_{2}$ sequestered by 1 m$^{3}$ of growing forest trees and were compared to a calculation of biogenic CO$_{2}$ release from the forest floor as a direct consequence of harvesting.Shorter forwarding and road transport distances, increased logging truck size and higher proportion of railway transport may result in lower emissions per volume of transported timber. A life cycle assessment of forestry may also consider impacts on environmental categories other than climate change. Biogenic CO$_{2}$ emissions from the soil may be up to 10 times higher than the fossil-related emissions, at least in a short-term perspective, and are highly dependent on stand rotation length.
Starting Page	1593
Ending Page	1606
Page Count	14
File Format	PDF
ISSN	09483349
Journal	The International Journal of Life Cycle Assessment
Volume Number	19
Issue Number	9
e-ISSN	16147502
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-07-11
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbon footprint Greenhouse gas emissions LCA LCI Norwegian forestry Timber transport Environment Environmental Economics Environmental Engineering/Biotechnology Environmental Chemistry
Content Type	Text
Resource Type	Article
Subject	Environmental Science

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