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dc.contributor.authorSikkema R
dc.contributor.authorSchelhaas MJ
dc.contributor.authorNabuurs GJ
dc.date.accessioned2012-12-12T14:55:39Z
dc.date.available2012-12-12T14:55:39Z
dc.date.issued2002-10-07
dc.identifier410200111
dc.identifier.isbn90 5851 089 1
dc.identifier.urihttp://hdl.handle.net/10029/256982
dc.description.abstractAbstract niet beschikbaar
dc.description.abstractAt the moment three alternative approaches for estimating emissions and removals of CO2 from forest harvesting and wood products are under discussion. These are atmospheric flow approach, stock change approach, and the production approach. Several methodologies are being developed to deal with these approaches. In the present report we test two of those The 'Forest Research Institute from New Zealand has developed an Excel based model' (FR), and the FA model (Alterra supported by FORM Ecology Consultants). The IPCC approaches themselves are not under study here, only the models representing them. Above that, a sensitivity analysis of the data input has been done, with a special focus on life spans. The models are qualitatively and quantitatively compared , and a sensitivity analysis on life spans was carried out. In principle both models (FR & FA) are very comparable, and can in principle be used as a basis for improved IPCC guidelines in this area. However, the current FR model focuses on the carbon dynamics in the long life span products only (on purpose), and thus lacks the following sources of CO2: actual burning of fuelwood (in atmospheric flow and production approach), immediate decomposition of wood residues (in atmospheric flow and production), and harvest figures (in stock change approach), which are relevant for determining the overall wood products carbon balance of a country. Thus the results of a full quantitative comparison of the FR and FA model were not so relevant. Finally, it is noted that the production approach can be interpreted in different ways. A wide variety of life span estimates was found in literature. Different shapes of decay functions are used. Also, confusion can occur because the half lives, total lives, as well as in- or excluding the disposed off phase, are used in literature. This contributes a lot to the uncertainty regarding life spans. The carbon balance of wood products showed the strongest sensitivity to life spans for New Zealand and The Netherlands. Especially the production approach is sensitive for changes in life spans. The overall effect of a decrease in life span is an increase of the sources, or in the case of The Netherlands under the stock change approach, a change from sink to source.
dc.description.sponsorshipSG-NOP
dc.format.extent85 p
dc.language.isoen
dc.publisherAlterra Wageningen
dc.publisherForm ecology consultants Hattem
dc.publisherThe Netherlands
dc.relation.ispartofGlobal Change NOP-NRP report 410200111
dc.relation.urlhttp://www.rivm.nl/bibliotheek/rapporten/410200111.html
dc.subject09nl
dc.subjectbosbouwnl
dc.subjectemissiesnl
dc.subjectklimaatveranderingnl
dc.subjectkooldioxidenl
dc.subjectlcanl
dc.subjectluchtverontreinigingnl
dc.subjectmodellenonderzoeknl
dc.subjectverhandelbare vervuilingsrechtennl
dc.subjectcarbon dioxideen
dc.subjectemissionen
dc.subjectforestryen
dc.subjectclimatic changesen
dc.subjectlcaen
dc.subjectair pollutionen
dc.subjectmodellingen
dc.subjectpollution rightsen
dc.titleInternational Carbon Accounting of Harvested Wood Products: Evaluation of two models for the quantification of wood products related emissions and removalsen
dc.title.alternativeDe internationale koolstofbalans van houtproducten. Evaluatie van twee modellen om emissie en vastlegging van koolstof te kwantificerennl
dc.typeReport
dc.contributor.departmentNOP
dc.date.updated2012-12-12T14:55:40Z
html.description.abstractAbstract niet beschikbaar
html.description.abstractAt the moment three alternative approaches for estimating emissions and removals of CO2 from forest harvesting and wood products are under discussion. These are atmospheric flow approach, stock change approach, and the production approach. Several methodologies are being developed to deal with these approaches. In the present report we test two of those The 'Forest Research Institute from New Zealand has developed an Excel based model' (FR), and the FA model (Alterra supported by FORM Ecology Consultants). The IPCC approaches themselves are not under study here, only the models representing them. Above that, a sensitivity analysis of the data input has been done, with a special focus on life spans. The models are qualitatively and quantitatively compared , and a sensitivity analysis on life spans was carried out. In principle both models (FR & FA) are very comparable, and can in principle be used as a basis for improved IPCC guidelines in this area. However, the current FR model focuses on the carbon dynamics in the long life span products only (on purpose), and thus lacks the following sources of CO2: actual burning of fuelwood (in atmospheric flow and production approach), immediate decomposition of wood residues (in atmospheric flow and production), and harvest figures (in stock change approach), which are relevant for determining the overall wood products carbon balance of a country. Thus the results of a full quantitative comparison of the FR and FA model were not so relevant. Finally, it is noted that the production approach can be interpreted in different ways. A wide variety of life span estimates was found in literature. Different shapes of decay functions are used. Also, confusion can occur because the half lives, total lives, as well as in- or excluding the disposed off phase, are used in literature. This contributes a lot to the uncertainty regarding life spans. The carbon balance of wood products showed the strongest sensitivity to life spans for New Zealand and The Netherlands. Especially the production approach is sensitive for changes in life spans. The overall effect of a decrease in life span is an increase of the sources, or in the case of The Netherlands under the stock change approach, a change from sink to source.


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