非洲热带山林的高地碳库存
Aida Cuni-Sanchez1,2, Martin J P Sullivan3,4, Philip J Platts5,6,7
1Department of Environment and Geography, University of York, York, UK. a.cuni-sanchez@york.ac.uk.
Nature
|August 26, 2021
概括
非洲热带山地森林在地面上储存大量的树木生物质碳 (AGC). 尽管这些森林面临灭绝的危险, 但它们的碳储量比以前估计的要多,
科学领域:
- 生态学
- 森林管理
- 气候变化科学
背景情况:
- 热带森林是重要的碳汇,储存着40-50%的陆地植被碳.
- 热带山林中的地面活树生物质碳 (AGC) 储量尚不清楚.
- 由于与海拔高度相关的环境变化,山地森林的AGC储量通常低于低地森林.
研究的目的:
- 分析非洲热带山林中的 AGC 种群.
- 将这些库存与全球其他热带森林生态系统进行比较.
- 为保护和重新造林战略提供数据.
主要方法:
- 收集和分析了来自AfriMont数据集的数据,其中包括12个非洲国家的44个老森林.
- 对研究地点的AGC平均库存和置信区间的计算.
- 模拟国家特定的AGC库存估计.
主要成果:
- 非洲山地森林的AfriMont网络平均每公碳储量为149.4兆克.
- 这些库存可与非洲低地森林相美,而且远高于新热带山地和低地森林.
- 结果明显高于政府间气候变化小组对非洲森林的默认值 (三分之二).
- 非洲山地森林的树干密度较低,大树的数量较多,类似于非洲低地森林.
- 据估计,自2000年以来,已有800万公的非洲古老山林消失.
结论:
- 非洲热带山林是重要的,富含碳的生态系统.
- 目前的保护和重新造林工作可能低估了这些森林的碳储存潜力.
- 迫切需要保护这些生物多样性和碳丰富的生态系统免受持续的森林砍伐.
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