安第斯森林对气候变化的广泛但异质反应
Belén Fadrique1, Selene Báez2,3, Álvaro Duque4
1Department of Biology, University of Miami, Coral Gables, FL, USA.
Nature
|November 16, 2018
概括
全球变暖正在导致热带树种向更低,更温暖的海拔地区转移. 这种广泛的"热化"在安第斯山脉的速度有所不同,
科学领域:
- 生态学
- 气候变化生物学
- 植物学
背景情况:
- 全球变暖导致物种范围的变化,
- 热带树木对气候变化的反应还没有得到充分研究.
- 了解这些变化对于保护至关重要.
研究的目的:
- 测试气候变化导致热带树种分布变化的预测.
- 在安第斯山脉树木群体中研究热友化现象.
- 分析影响组合变化的因素.
主要方法:
- 使用近200个安第斯森林土地库存的数据库.
- 在广的度范围内分析数据 (26.8°南至7.1°北).
- 从海拔360米到3360米的高度变化.
主要成果:
- 热带和亚热带树木群体向较低,较温暖的高度的物种呈现方向变化 (热友化).
- 热化在安第斯山脉中很普遍.
- 构成变化的速度不均,随着高度变化而变化.
结论:
- 安第斯热带森林正在经历气候驱动的重大组成变化.
- 热化速率的异质性可能与变暖速率和生态特征有关.
- 需要进一步的研究来预测和减轻气候变化对热带森林的影响.
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