Hurricane Maria tripled stem breaks and doubled tree mortality relative to other major storms
Hurricane Maria tripled stem breaks and doubled tree mortality relative to other major storms
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DOI：
10.1038/s41467-019-09319-2
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发表时间：
2019-03-25
影响因子：
16.6
通讯作者：
Zimmerman, Jess K.
中科院分区：
文献类型：
--
作者：
Uriarte, Maria;Thompson, Jill;Zimmerman, Jess K.
预计热带气旋将在气候变暖的情况下加剧，对热带森林的影响不确定。预测更强烈的风暴将如何影响这些生态系统的一个关键挑战是将影响具体归因于风暴气象学而不是森林特征的差异。在这里，我们比较了飓风 Hugo（1989 年，类别 3）、Georges（1998 年，类别 3）和 Maria（2017 年，类别 4）之后在波多黎各同一森林中收集的树木损坏数据。玛丽亚 (Maria) 杀死的树木数量是雨果 (Hugo) 的两倍，而且除两种以外，其他所有树种的树干折断数量比其他两次风暴多 2 至 12 倍。具有高密度木材的物种能够抵抗连根拔起、飓风引起的死亡，并且在雨果期间免受破坏，但玛丽亚却不然。树木清单和风暴露模型使我们能够将这些影响差异归因于风暴气象。更好地了解与树种对严重风暴的敏感性相关的风险因素是预测气候变暖下森林生态系统未来的关键。
Tropical cyclones are expected to intensify under a warming climate, with uncertain effects on tropical forests. One key challenge to predicting how more intense storms will influence these ecosystems is to attribute impacts specifically to storm meteorology rather than differences in forest characteristics. Here we compare tree damage data collected in the same forest in Puerto Rico after Hurricanes Hugo (1989, category 3), Georges (1998, category 3), and Maria (2017, category 4). Maria killed twice as many trees as Hugo, and for all but two species, broke 2- to 12-fold more stems than the other two storms. Species with high density wood were resistant to uprooting, hurricane-induced mortality, and were protected from breakage during Hugo but not Maria. Tree inventories and a wind exposure model allow us to attribute these differences in impacts to storm meteorology. A better understanding of risk factors associated with tree species susceptibility to severe storms is key to predicting the future of forest ecosystems under climate warming.