用贸易相关方法评估中国制造木制品的碳平衡
Xiaobiao Zhang1,2, Jiaxin Chen3, Manfred Lenzen4
1State Key Laboratory of Regional and Urban Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Environmental science & technology
|May 19, 2025
概括
采伐木材产品 (HWPs) 在减缓气候变化方面发挥着作用. 一种新的与贸易相关的方法准确地计算了全球HWP贸易,揭示了国际合作伙伴的显著碳库存和排放贡献.
科学领域:
- 环境科学 环境科学
- 气候科学 气候科学
- 林业林业 林业 林业 林业
背景情况:
- 采伐木材产品 (HWPs) 对于通过森林碳去除来缓解气候变化至关重要.
- 目前对HWP的碳核算方案不足以解决全球供应链中复杂的国际贸易和生物碳转化问题.
- 这种差距阻碍了有效的气候政策设计和对HWP贡献的准确评估.
研究的目的:
- 开发一种可通用的贸易相关方法来计算HWP贸易,碳库存和排放.
- 在国际供应链中准确地分配与HWP相关的碳吸收和排放.
- 为基于HWP的减缓提供气候政策和碳支付计划的信息.
主要方法:
- 开发了一种新的贸易相关方法来量化全球HWP供应链中的碳流量.
- 在1990-2020年期间对中国制造的HWP进行了案例研究.
- 将结果与现有的FAOSTAT统计数据进行比较,以突出差异.
主要成果:
- 贸易伙伴为中国 (1990-2020年) 提供了22%的原材料,消耗了13%的HWP,是FAOSTAT估计的两倍.
- 在研究期间,国际贸易伙伴持有HWP总碳库存的13%.
- 在海外消费的HWP在2016-2020年期间产生了显著的碳汇 (43MtCO2e yr-1).
结论:
- 与贸易相关的方法可以更准确地计算HWP碳库存和排放.
- 国际贸易对HWP的气候减缓潜力产生重大影响.
- 需要一个全球HWP碳支付计划,以激励整个供应链的减缓.
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