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风暴是热带森林变化的重要驱动力
Evan M Gora1,2, Ian R McGregor1, Helene C Muller-Landau2
1Cary Institute of Ecosystem Studies, New York, New York, USA.
Ecology letters
|July 9, 2025
概括
常常被忽视的对流风暴对热带森林的碳动态有重大影响. 增加的风暴活动,以闪电为标志,是森林变化和生物质死亡的主要驱动因素,挑战了对干旱和温度的关注.
科学领域:
- 热带生态学热带生态学
- 气候科学 气候科学
- 林业 林业 林业 林业 林业
背景情况:
- 热带森林的动态正在发生变化,但驱动因素尚不清楚.
- 研究经常忽视对流风暴,专注于干旱,二氧化碳,温度和火灾.
- 风暴是森林变化的关键,未被充分研究的因素.
研究的目的:
- 调查对流风暴作为热带森林变化的驱动因素的作用.
- 重新分析热带森林碳动态数据,包括风暴活动.
- 评估闪电频率对森林碳储存和死亡率的影响.
主要方法:
- 重新分析了基于图片的最大热带森林碳动态研究.
- 作为风暴活动指标的闪电频率的统计分析.
- 模拟森林碳储存和居住时间,有或没有风暴数据.
主要成果:
- 闪电频率强烈预测森林碳储存和居住时间.
- 包括风暴活动在内可以改善模型的合适性,并削弱对高温影响的证据.
- 卷积风暴活动每十年增加5%-25%.
- 暴风雨可能有助于ca. 50%的报告增加了亚马逊生物质死亡率.
- 风暴活动和干旱压力显示空间关系较弱.
结论:
- 卷积风暴是热带森林变化的主要驱动力.
- 低估风暴误导了科学,政策和管理.
- 进一步研究风暴对热带森林影响的投资至关重要.
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