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首页> 外文期刊>Building and Environment >Dynamic greenhouse gas life cycle inventory and impact profiles of wood used in Canadian buildings
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Dynamic greenhouse gas life cycle inventory and impact profiles of wood used in Canadian buildings

机译：动态温室气体生命周期库存和加拿大建筑物木材的影响曲线

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Wood is increasingly promoted due to its reported low climate change impacts; however, the literature reports provides high variability of climate change impact scores, making comparisons with non-wood materials difficult. The objective of this study is to calculate a database of life cycle inventories (LCI) and dynamic climate change impacts (DCCI) of wood building products, for different use contexts across Canada. Temporally differentiated gate-to-gate LCIs were developed, to which dynamic life cycle assessment (DLCA) was applied, yielding a modular database of cradle-to-grave LCIs and DCCIs of wood products. Four wood product case studies were chosen to demonstrate the use of the modular LCI and DCCI database of wood product use in buildings. The results show that most wood building products provide overall net negative climate change impact scores, though for some wood product specifications results show net positive climate change impacts. Results are sensitive to a few factors, including ecosystem carbon cost (ECC), wood carbon content, building lifespan and end-of-life. This research develops a gate-to-gate LCI and DCCI database for each life cycle stage of wood building products, allowing life cycle assessment (LCA) practitioners to calculate DCCI results with respect to a chosen time horizon relevant for decision-making. This modular database would be particularly useful to those practitioners wishing to account for biogenic carbon in wood product life cycle assessment, which is currently quite difficult due to a lack of data. It could also be readily implemented into LCA tools to support building designers in sustainable building material selection.
机译：由于其报告的低气候变化影响，木材越来越促进;然而，文献报告提供了气候变化影响分数的高度变化，使得与非木材材料的比较困难。本研究的目的是计算木材建筑产品的生命周期库存（LCI）和动态气候变化影响（DCCI）的数据库，用于加拿大的不同使用情况。临时分化的栅极 - 栅极LCIS开发，施加动态生命周期评估（DLCA），产生了木制品的摇篮对墓地LCIS和DCCIS的模块化数据库。选择四种木制品案例研究以证明在建筑物中使用模块化LCI和DCCI数据库的使用。结果表明，大多数木材建筑产品提供整体净负面气候变化的影响分数，但对于一些木材产品规格，结果显示净积极的气候变化影响。结果对几个因素敏感，包括生态系统碳成本（ECC），木炭含量，建筑寿命和寿命结束。该研究为木材建筑产品的每个生命周期阶段开发了门对门LCI和DCCI数据库，允许生命周期评估（LCA）从业者在与决策相关的选择时间范围内计算DCCI结果。这种模块化数据库对于希望考虑木材产品生命周期评估中的生物碳的从业者特别适用，目前由于缺乏数据而言。它也可以很容易地实施到LCA工具中，以支持可持续建筑材料选择中的建筑设计师。

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