亚热带森林中的风适应:暴露于风的斜坡上的树木较短,冠冕较小
Roi Ankori-Karlinsky1, Tobias D Jackson2, Gan Yuan3
1Department of Ecology, Evolution, and Environmental Biology, Columbia University, 1190 Amsterdam Avenue, New York, NY, 10027, USA.
The New phytologist
|June 12, 2025
概括
慢性风力塑造了热带树木的建筑,导致树木较短,冠冕较小. 这种适应减少了它们对森林生态系统风力损害的脆弱性.
科学领域:
- 生态生态学 生态生态学
- 森林科学 森林科学 森林科学
- 生物物理学的生物物理.
背景情况:
- 树木架构影响着森林的动态,较高的树木超过邻居,但面临着更高的风力损害风险.
- 了解风对自然热带森林树木结构的影响仍然有限.
研究的目的:
- 调查慢性风是否会改变热带森林中的树木结构.
- 确定风暴露如何影响树木高度,树冠面积和机械脆弱性.
主要方法:
- 利用空中光探测和测距 (LiDAR) 和波多黎各30年森林库存数据.
- 采样了来自四种主要树木物种的124个树冠个体.
- 测量了细度和冠面积,并考虑了地形和邻近变量.
主要成果:
- 四种物种中有三种在风暴露的地点显著减少高度 (2-4m) 和冠状区域.
- 一种先驱物种没有显著的风引起的建筑变化.
- 三种物种的建筑调整导致了机械风脆弱性的降低.
结论:
- 慢性,非风暴风可以诱导热带树木的建筑变化,特别是减少高度和冠状尺寸.
- 这些调整有助于减轻机械风的脆弱性.
- 森林管理和保护战略应考虑风力暴露对树木结构的长期影响.
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