scholarly journals Assessing the greenhouse gas effects of harvested wood products manufactured from managed forests in Canada

2018 ◽  
Vol 91 (2) ◽  
pp. 193-205 ◽  
Author(s):  
Jiaxin Chen ◽  
Michael T Ter-Mikaelian ◽  
Hongqiang Yang ◽  
Stephen J Colombo
Keyword(s):  
Greenhouse Gas ◽  
Wood Products ◽  
Managed Forests ◽  
Harvested Wood Products

Carbon budget of Ontario's managed forests and harvested wood products, 2001–2100

2010 ◽  
Vol 259 (8) ◽  
pp. 1385-1398 ◽  
Author(s):  
Jiaxin Chen ◽  
Stephen J. Colombo ◽  
Michael T. Ter-Mikaelian ◽  
Linda S. Heath
Keyword(s):  
Carbon Budget ◽  
Wood Products ◽  
Managed Forests ◽  
Harvested Wood Products

scholarly journals Greenhouse gas emission effect of suspending slash pile burning in Ontario's managed forests

2016 ◽  
Vol 92 (03) ◽  
pp. 345-356 ◽  
Author(s):  
Michael T. Ter-Mikaelian ◽  
Stephen J. Colombo ◽  
Jiaxin Chen
Keyword(s):  
Greenhouse Gas ◽  
Greenhouse Gas Emission ◽  
Management Practice ◽  
Ghg Emissions ◽  
Wood Products ◽  
Managed Forests ◽  
Forestry Practices ◽  
Emission Effect ◽  
Harvest Volume ◽  
Reduce Emissions

Ontario has made a commitment to reduce its greenhouse gas (GHG) emissions by 15, 37, and 80% below 1990 levels by 2020, 2030, and 2050, respectively. Ontario's forest managers can contribute to meeting these targets by implementing changes to forestry practices that either reduce emissions from operations or increase carbon sequestration in forest ecosystems and harvested wood products. We present an analysis of the effects on GHG emissions resulting from suspending the current management practice of slash pile burning (burning harvest residue in the forest without energy recovery). The analysis was performed for each of Ontario's forest management units (FMU) with assumed suspension of slash pile burning for four different periods: 2016–2025, 2016–2050, 2016–2075, and 2016–2100. Annual and cumulative avoided emissions from suspending slash pile burning that would have occurred with current practices were estimated from planned harvest volume and area adjusted to reflect harvesting levels from 1990 to 2009, data on slash pile burning from 2008 to 2013, and emission factors for combustion and decay of wood estimated from the literature. Suspending slash pile burning was estimated to reduce GHG emissions by year 2100 in all four no-burn scenarios, with cumulative GHG emission reductions estimated at -0.7, -4.5, -14.1, and -33.4 Mt CO2eq (million tonnes of CO2 equivalent), respectively. At the same time, suspending slash pile burning for the above-listed four periods resulted in losses of forest area by 2100 estimated at 7200, 24000, 40800, and 57800, respectively. The accuracy of these projections is affected by uncertainty in estimates of several components of the analysis, of which the primary one is the historical rate of slash pile burning. Improvement in measuring and reporting procedures is needed to obtain more reliable estimates of the amount of slash burned.

scholarly journals On the trade-offs and synergies between forest carbon sequestration and substitution

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Sampo Soimakallio ◽  
Tuomo Kalliokoski ◽  
Aleksi Lehtonen ◽  
Olli Salminen
Keyword(s):  
Carbon Sequestration ◽  
Greenhouse Gas ◽  
Raw Materials ◽  
National Level ◽  
Ghg Emissions ◽  
Forest Carbon ◽  
Wood Products ◽  
Carbon Equivalent ◽  
Harvested Wood Products ◽  
Trade Offs

AbstractForest biomass can be used in two different ways to limit the growth of the atmospheric greenhouse gas (GHG) concentrations: (1) to provide negative emissions through sequestration of carbon into forests and harvested wood products or (2) to avoid GHG emissions through substitution of non-renewable raw materials with wood. We study the trade-offs and synergies between these strategies using three different Finnish national-level forest scenarios between 2015 and 2044 as examples. We demonstrate how GHG emissions change when wood harvest rates are increased. We take into account CO2 and other greenhouse gas flows in the forest, the decay rate of harvested wood products and fossil-based CO2 emissions that can be avoided by substituting alternative materials with wood derived from increased harvests. We considered uncertainties of key parameters by using stochastic simulation. According to our results, an increase in harvest rates in Finland increased the total net GHG flow to the atmosphere virtually certainly or very likely, given the uncertainties and time frame considered. This was because the increased biomass-based CO2 and other greenhouse gas emissions to the atmosphere together with decreased carbon sequestration into the forest were very likely higher than the avoided fossil-based CO2 emissions. The reverse of this conclusion would require that compared to what was studied in this paper, the share of long-living wood products in the product mix would be higher, carbon dioxide from bioenergy production would be captured and stored, and reduction in forest carbon equivalent net sink due to wood harvesting would be minimized.

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