减少影响伐木对热带雨林的碳和能量交换的影响最小。
Reduced impact logging minimally alters tropical rainforest carbon and energy exchange.
机构信息
Atmospheric Sciences Research Center, State University of New York, Albany, NY 12203, USA.
出版信息
Proc Natl Acad Sci U S A. 2011 Nov 29;108(48):19431-5. doi: 10.1073/pnas.1105068108. Epub 2011 Nov 15.
Abstract
We used eddy covariance and ecological measurements to investigate the effects of reduced impact logging (RIL) on an old-growth Amazonian forest. Logging caused small decreases in gross primary production, leaf production, and latent heat flux, which were roughly proportional to canopy loss, and increases in heterotrophic respiration, tree mortality, and wood production. The net effect of RIL was transient, and treatment effects were barely discernable after only 1 y. RIL appears to provide a strategy for managing tropical forest that minimizes the potential risks to climate associated with large changes in carbon and water exchange.
摘要
我们利用涡度相关和生态测量方法来研究减少伐木业对亚马逊古老森林的影响。伐木业导致总初级生产力、叶生产和潜热通量的小幅度减少，这与树冠损失大致成比例，而异养呼吸、树木死亡和木材生产增加。减少伐木业的净效应是短暂的，仅在 1 年后，处理效应几乎难以察觉。减少伐木业似乎为管理热带森林提供了一种策略，可最大限度地降低与碳和水交换的大变化相关的气候风险。
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