亚马逊森林火灾的发生率对REDD有影响
Luiz E O C Aragão1, Yosio E Shimabukuro
1Landscape and Ecosystems Dynamics Group, School of Geography, University of Exeter, Amory Building, Rennes Drive, Exeter, Devon, EX4 4RJ, UK. l.aragao@exeter.ac.uk
概括
减少森林砍伐和退化 (REDD) 的排放可能会增加火灾风险. 在REDD项目中实施无火土地管理可以显著减少火灾发生率,防止碳节约因火灾排放增加而丧失.
科学领域:
- 环境科学 环境科学
- 气候变化研究 气候变化研究
- 林业管理 林业管理
背景情况:
- 减少森林砍伐和退化 (REDD) 的排放是缓解气候变化的关键战略.
- 关于REDD对火灾危险和相关碳排放的影响仍然不够理解.
- 增加火灾发生率可以抵消减少森林砍伐的碳封存效益.
研究的目的:
- 调查减少森林砍伐率与巴西亚马逊地区火灾发生之间的关系.
- 量化无火土地管理在减轻森林砍伐地区火灾发生率方面的有效性.
- 评估火灾排放对REDD倡议总体碳平衡的影响.
主要方法:
- 对巴西亚马逊地区森林砍伐和火灾发生的卫星数据的分析.
- 在不同森林砍伐率的地区比较火灾频率.
- 检查土地利用梯度,以评估无火土地管理策略.
主要成果:
- 在经历森林砍伐减少的地区中,59%的地区,火灾发生率增加.
- 没有火灾的土地管理表明,火灾发生率大幅降低,高达69%.
- 无火管理的有效性在不同的土地使用梯度上有所不同.
结论:
- 如果不与可持续的土地管理相结合,REDD机制可能会无意中增加火灾风险.
- 采用无火土地管理对于实现REDD的全部碳效益至关重要.
- 如果不整合消防管理,可能会部分抵消因避免砍伐森林而节省的碳.
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