Climate impact potential of utilizing forest residues for bioenergy in Norway
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The utilization of forest residues for bioenergy in Norway is foreseen to increase due to the government call to double bioenergy output by 2020 to thirty Tera-Watt hours. This study focuses on the climate impacts of bioenergy utilization where four forest residue extraction scenarios at clear-cut are considered: i) 75 % above ground residues (branches, (25 %) foliage, tops); ii) 75 % above and below ground residues (branches, tops, (25 %) foliage, stumps, coarse and small roots); iii) extracting 100 % of all available forest residue; and iv) leaving all residues in the forest. The Yasso07 soil-carbon model was utilized to quantify the carbon flux to the atmosphere due to the forest residues that are left in the forest in each scenario. The climate impact potential for each scenario was then calculated for the carbon-flux neutral Norway Spruce (Picea abies) forest system in five regions of Norway. The biogenic carbon dioxide emissions associated to decomposition upon forest floor, procurement losses and bioenergy conversion are included in these calculations. Results suggest that if such bioenergy can directly replace a fossil source of energy, the utilization of this biomass was found to be climatically beneficial in most fossil energy replacement cases and time horizons when compared to leaving the residues in the forest. Integrated global temperature change displacement factors have been developed which have been used to estimate the magnitude of this climate change mitigation over a particular time horizon.
KeywordsBioenergy Carbon neutral Climate change Forest residues Global temperature potential
The authors would like to acknowledge the Norwegian research council for funding this work through the Bio-energy Innovation Centre (CenBio).
- CenBio (2009) CenBio Newsletter. December 2009. Accessed 24.10.2011. http://www.sintef.no/project/CENBIO/CenBio%20Newsletter%20No%201.pdf.
- Cherubini F, Strømman AH, Hertwich E (2011b) Effects of boreal forest management practices on the climate impact of CO2 emissions from bioenergy. Ecol Model. doi: 10.1016/j.ecolmodel.2011.06.021
- Cherubini F, Guest G, Strømman AH (2012) Application of probability distributions to the modeling of biogenic CO2 fluxes in life cycle assessment. GCB Bioenergy. doi: 10.1111/j.1757-1707.2011.01156.x
- de Wit HA, Kvindesland S (1999) Carbon in Norwegian forest soils and effects of forest management on carbon storage. Norwegian Forest Research Institute, ÅsGoogle Scholar
- EC (European Commission) (2010) Europe 2020 A strategy for smart, sustainable and inclusive growth. Communication from the Commission-COM 2020, Brussels, 3.3.2010.Google Scholar
- Forster P, Ramaswamy V, Artaxo P, Berntsen T, Betts R, Fahey DW, Haywood J, Lean J, Lowe DC, Myhre G, Nganga J, Prinn R, Raga G, Schulz M, Dorland RV (2007) Changes in atmospheric constituents and in radiative forcing. In: e. a. S. Solomon (Ed.), Climate Change 2007: the physical science basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge, UKGoogle Scholar
- IPCC (2006) In: Eggleston HS, Buendia L, Miwa K, Ngara T, Tanabe K (eds) 2006 IPCC guidelines for national greenhouse gas inventories, prepared by the national greenhouse gas inventories programme. IGES Published, JapanGoogle Scholar
- Kreutz TG, Larson ED, Liu G, Williams RH (2008) Fischer-tropsch fuels from coal and biomass. Princeton Environmental Institute, PrincetonGoogle Scholar
- Mann MK, Spath PL (1997) Life cycle assessment of a biomass gasification combined-cycle power system. National Renewable Energy Laboratory, GoldenGoogle Scholar
- McKechnie J, Colombo S, Chen J, Mabee W, MacLean HL. (2011) Forest bioenergy or forest carbon? Assessing trade-offs in greenhouse gas mitigation with wood-based fuels. Environ Sci Technol 15;45(2):789–95Google Scholar
- MET (2011) Meteorologisk institute. eKlima. Accessed 14.04.2011, http://sharki.oslo.dnmi.no/portal/page?_pageid=73,39035,73_39049&_dad=portal&_schema=PORTAL.
- Rørstad PK, Trømborg E, Bergseng E, Solberg N (2010) Estimating regional supply of harvest residues in Norway. Silva Fennica 44(3):435–451Google Scholar
- Samuelsson H (2002) Recommendations for the extraction of forest fuel and compensation fertilizing. [Swedish] National Borad of Forestry, April 2002. Acessed 18.05.2011, from http://shop.skogsstyrelsen.se/shop/9098/art62/4645962-9b6e2b-1545.pdf.
- Schimel D, Alves D, Enting IG, Heimann M, Joos F (1996) CO2 and the carbon cycle. In: Houghton JT (Ed.), IPCC second scientific assessment of climate change, New York, U.S.Google Scholar