新热带二级森林的生物质弹性
Lourens Poorter1, Frans Bongers1, T Mitchell Aide2
1Forest Ecology and Forest Management Group, Wageningen University, PO Box 47, 6700 AA Wageningen, The Netherlands.
Nature
|February 4, 2016
概括
热带二级森林迅速恢复地面生物质, 恢复率取决于水的可用性,为碳循环平衡的保护策略提供信息.
科学领域:
- 生态学
- 气候科学
- 森林管理
背景情况:
- 热带土地利用变化对全球碳循环产生重大影响.
- 对于二级森林生物质回收率和影响因素存在不确定性.
研究的目的:
- 分析新热带二级森林的地表生物质回收.
- 确定气候,景观和土地使用如何影响恢复率.
- 在拉丁美洲绘制碳封存潜力.
主要方法:
- 分析了新热带地区的45个森林区和1500个森林地块.
- 随着时间的推移,地表生物质回收的量化.
- 评估与水资源和气候因素有关的回收率.
主要成果:
- 二级森林表现出高的生产力和弹性,在20年后平均地表生物质恢复量为122Mg ha-1.
- 恢复森林的净碳吸收量为3.05Mg C ha-1yr,是老森林的11倍.
- 生物质回收在不同地点变化了11.3倍, 随着水资源的可用性而增加.
- 恢复90%的老生长生物质的中位时间为66年.
结论:
- 热带地区的森林再生是一个重要的碳捕获过程.
- 水的可用性是生物质回收率的一个关键因素.
- 生物质回收地图可以指导拉丁美洲的目标保护和恢复政策.
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