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日本的碎片板和纤维板的碳库存
Chihiro Kayo1, Kotoko Sanjo2, Issei Sato2
1Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-Cho, Fuchu, Tokyo, 183-8509, Japan. kayoc@cc.tuat.ac.jp.
Scientific reports
|June 17, 2023
概括
日本 日本 日本 日本 日本.
科学领域:
- 环境科学 环境科学
- 林业科学 林业科学
- 气候变化缓解缓解 气候变化缓解
背景情况:
- 采伐木材产品 (HWPs) 在应对气候变化的措施中发挥着作用.
- 颗粒板 (PB) 和纤维板 (FB) 是利用回收材料的高压板.
- 准确估计HWP中的碳库存对于气候战略至关重要.
研究的目的:
- 在过去的70年中,估计日本的颗粒板 (PB) 和纤维板 (FB) 的碳库存和年度变化.
- 为了比较不同碳库存估计方法 (IPCC 1-3级) 的准确性.
- 评估废木对PB和FB碳库的贡献.
主要方法:
- 使用了政府间气候变化专门委员会 (IPCC) 三种指导方法:一级 (第一阶段衰变,25年半衰期,粮农组织数据库),二级 (第一阶段衰变,25年半衰期,日本特有的统计数据) 和三级 (日志-正常衰变函数,38-63年半衰期).
- 根据历史数据,应用这些方法来估计日本的PB和FB的碳库存和年度变化.
- 分析了碳库存的组成,包括废木的贡献.
主要成果:
- 在过去的70年里,日本的PB和FB碳库存呈现出稳定的增长.
- 在2022年初,总碳库存估计为2183万t-C,在2021年每年增加0.42万t-C (使用Tier 3).
- 3级提供了最准确的估计,因为它使用了衰变函数和半衰期,反映了实际建筑PB/FB条件,而1级和2级低估了库存.
- 大约40%的总碳储量来自废木材,这突显了其重要的作用.
结论:
- 日本颗粒板和纤维板的碳库存稳步增加,有助于减缓气候变化.
- 使用特定的衰变函数和半衰期的Tier 3估计方法,为PB和FB碳库存评估提供了更高的准确性.
- 废木对碳库存的重大贡献 (约40%) 强调了回收利用和扩大木材资源利用的重要性.
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