日本建筑和拆除活动碳排放的动态分析:通过高分辨率的4D-GIS建模揭示
Yueyang Bai1, Naho Yamashita1, Jing Guo2
1Grauate School of Environmental Studies, Nagoya University, Nagoya, Japan.
Journal of environmental management
|May 17, 2024
概括
在日本,从2005年到2020年,建筑和拆除产生的碳排放量明显减少了50%以上. 这种减少与与现有库存相比,新建或拆除建筑物的比例较低有关,这表明向基于库存的社会转变.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 建筑科学 建筑科学
背景情况:
- 全球建筑行业面临着满足2050年脱碳目标的压力.
- 目前建筑和拆除的碳核算缺乏空间细节和当地相关性.
- 减少建筑施工和拆除排放对于气候目标至关重要.
研究的目的:
- 创建一个详细的时空数据库,记录日本建筑施工和拆除所产生的碳排放.
- 分析市级的排放,并确定关键的贡献因素.
- 为地方政府制定有针对性的减排政策提供信息.
主要方法:
- 开发了一个自下而上的时空数据库,集成了GIS,建筑库存模型和统计数据.
- 利用对数平均分数指数 (LMDI) 来分解排放变化.
- 集中分析市级数据,以获得详细的见解.
主要成果:
- 在日本,建筑和拆除产生的碳排放量在2005年至2020年期间下降了50%以上.
- 新建/拆迁与库存比率的下降是减少排放的主要驱动因素.
- 中心城市的建筑排放受到碳密集型建筑的影响,突出材料选择.
结论:
- 日本正在向基于股票的社会过渡,减少建筑相关的排放.
- 可持续材料和木材设计对于减轻城市地区建筑排放至关重要.
- 回收设施的战略位置可以减少与拆除相关的运输排放.
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