循环木材的使用可以加速全球脱碳,但需要跨部门的协调
Eilidh J Forster1, John R Healey2, Gary Newman3
1School of Environmental and Natural Sciences, Bangor University, Bangor, Gwynedd, LL57 2UW, UK. afp239@bangor.ac.uk.
Nature communications
|October 25, 2023
概括
在林业价值链中过渡到循环和级联木材的使用,大大提高了气候变化减缓. 这种方法减少了对原木的需求,促进了森林碳储存,并取代了化石燃料,从而大幅减少了温室气体排放.
科学领域:
- 环境科学 环境科学
- 林业林业 林业 林业 林业
- 气候变化缓解缓解 气候变化缓解
背景情况:
- 目前的线性木材利用限制了林业的气候缓解潜力.
- 可持续林业实践对于减少温室气体排放至关重要.
- 循环经济原则为增强木材资源对气候带来的益处提供了一条途径.
研究的目的:
- 量化层级和循环木材使用对气候变化减缓的好处.
- 为了比较循环木材使用与传统线性模型的有效性.
- 确定转变林业价值链向循环化的障碍和推动因素.
主要方法:
- 使用生命周期评估 (LCA) 来评估气候减缓影响.
- 分析重点是林业价值链中的木材使用,包括回收利用.
- 来自英国的一项案例研究研究了中密度纤维板的回收利用.
主要成果:
- 级联和循环木材的使用提供了立即和持续的气候缓解.
- 在英国,回收中密度纤维板显示,到2050年,与以往一样的业务相比,回收的减缓率将提高75%.
- 联合循环/级联利用和植树可以在2050年前减轻2588万二氧化碳排放量.
结论:
- 循环和级联木材的使用显著增强了气候缓解,补充了植树努力.
- 系统性障碍阻碍了在林业中采用循环经济原则.
- 需要推动者来转变林业价值链,以实现有效的气候行动.
相关概念视频
Wood Products
87
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
87
Introduction to Wood
240
Wood, derived from trees, is a versatile and widely used construction material. Trees feature a trunk surrounded by a protective layer of dead bark. Beneath this outer layer lies the living bark, followed by the cambium, and then the sapwood which transitions into heartwood as it matures. At the center of the trunk is the pith. The age of a tree can be discerned by examining its growth rings, which are concentric bands visible in the trunk's cross-section.
The structural integrity of the...
The structural integrity of the...
240
Design Example: Sustainability in Concrete Building
170
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
170
Sustainable Development
13.3K
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
13.3K
Softwoods and Hardwoods
171
Softwoods and hardwoods, derived from different types of trees, are distinguished by their leaf structures and cellular compositions, each serving unique purposes in construction and manufacturing. Softwoods come from cone-bearing trees with needle-like leaves and are predominantly composed of longitudinal cells called tracheids and a smaller proportion of radial cells known as rays. Due to their cellular structure, softwoods are commonly used in construction for structural frames, sheathing,...
171
Wood Surfacing
96
Wood surfacing is a critical finishing process designed to smoothen the wood surface, enhance its dimensional accuracy, and make handling safer. This process compensates for potential shrinkage during the seasoning phase by marginally increasing the wood dimensions before surfacing. It also helps correct some distortions that may occur as the wood dries.
The equipment used in the surfacing process is a plane equipped with rotating blades. This tool efficiently smoothens the wood surface and can...
The equipment used in the surfacing process is a plane equipped with rotating blades. This tool efficiently smoothens the wood surface and can...
96


