IDENTIFYING ENVIRONMENTALLY PREFERABLE USES FOR BIOMASS

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IDENTIFYING ENVIRONMENTALLY PREFERABLE USES FOR BIOMASS ( identifying-environmentally-preferable-uses-for-biomass )

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BC Bugwood Envirochem Services Inc. 2 BUGWOOD AVAILABILITY AND DISTRIBUTION IN BRITISH COLUMBIA 2.1 Size of the Resource and Its Availability Over Time The opportunity offered by bugwood in BC is a temporary one. As Figure 2.1.1 shows, annual tree losses are expected to peak at about 90 million m3 in 2007, after which the epidemic is expected to slowly abate over time. The availability of bugwood over time will have major impacts both on the existing forest products industry, as well as on any solutions implemented to use the surplus wood made available through the pine beetle infestation. Figure 2.1.1 Cumulative and Annual Volumes of Bugwood [BCFS 2005] Figure 2.1.2 shows that after a few years, dead trees dry out and decay sets in so that the wood is no longer suitable for higher-end uses, such as construction wood or furniture-making. It can, however, still be useful up to 15 years for the pulp & paper sector [BCFS 2005, p.21, reference scenario], and beyond for energy uses. Wood decays faster in moist zones (i.e., the shelf life across BC will vary from area to area), depending on the climate. Even where higher end uses are maintained, the relative waste production is likely to increase which may also pose problems. Trees killed by pine beetles are not expected to be useful for sawmills after about five years – an assumption that still needs to be confirmed in the field. Older trees can still be used for pulp and paper (up to about 15 years) or energy purposes. 0 5 10 15 Figure 2.1.2 20 years after death Shelf Life of Bugwood [BCFS 2005] Page 3

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