估计中国森林碳储存70年 (1949-2018) 的变化
WeiSheng Zeng1, XinYun Chen2, XueYun Yang2
1Academy of Inventory and Planning, National Forestry and Grassland Administration, Beijing, 100714, China. zengweisheng0928@126.com.
Scientific reports
|October 6, 2023
概括
中国中国中国中国.
科学领域:
- 林业科学 林业科学
- 生态生态学 生态生态学
- 气候变化研究研究气候变化研究
背景情况:
- 准确的森林碳储存估计对于国家和国际气候承诺至关重要.
- 中国的森林资源库存和监测依赖于强大的生物质碳模型.
- 历史的森林开发和随后的保护工作对碳库存产生了重大影响.
研究的目的:
- 为中国的森林开发准确的标准级生物质和碳储存模型.
- 量化过去40年森林碳储存的变化.
- 评估现有的森林碳模型,并强调需要改进的领域.
主要方法:
- 利用来自中国第九届国家森林库存 (NFI) 的52,700个永久地块的数据.
- 开发了34个群体的特定物种树木生物质模型和20种森林类型的特定体积衍生模型.
- 将开发的模型应用于历史数据,以追踪碳储存趋势.
主要成果:
- 到20世纪70年代末,中国的森林碳储量下降到4.90 (Pg).
- 到第九次NFI时,森林碳储量恢复到8.69 Pg,在40年内增加了3.79 Pg.
- 自然森林为最近的碳储存增加贡献了2.25 Pg,种植森林为1.54 Pg.
结论:
- 开发的模型提供了对中国森林碳储存动态的更准确的评估.
- 森林碳库存的显著恢复表明了保护和植树计划的有效性.
- 基准测试揭示了现有模型中的偏差,强调需要更大的数据集和改进的方法.
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