Why is Tree Drought Mortality so Hard to Predict?
Why is Tree Drought Mortality so Hard to Predict?
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DOI：
10.1016/j.tree.2021.02.001
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发表时间：
2021-03
影响因子：
16.8
通讯作者：
A. Trugman;L. Anderegg;W. Anderegg;Adrian J. Das;N. Stephenson
中科院分区：
文献类型：
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作者：
A. Trugman;L. Anderegg;W. Anderegg;Adrian J. Das;N. Stephenson
干旱后树木的普遍死亡已经成为环境和经济破坏性的“生态灾难”。众所周知，树木生理学在理解干旱导致的死亡率方面很重要;然而，仅基于生理学的预测准确性有限。我们建议，复杂的因素在两个层面上阻碍预测干旱驱动的死亡率：（i）生物水平的生理和站点因素，模糊干旱暴露和脆弱性的理解和（ii）社区水平的生态相互作用，特别是与生物因子，其对树木死亡率的影响可能会扭转基于压力生理的预期。最后，我们提出了一条前进的道路，强调需要一个综合的方法来评估森林风险时，压力生理和生物因子动态干旱驱动的道德在不断变化的气候。
Widespread tree mortality following droughts has emerged as an environmentally and economically devastating ‘ecological surprise'. It is well established that tree physiology is important in understanding drought-driven mortality; however, the accuracy of predictions based on physiology alone has been limited. We propose that complicating factors at two levels stymie predictions of drought-driven mortality: (i) organismal-level physiological and site factors that obscure understanding of drought exposure and vulnerability and (ii) community-level ecological interactions, particularly with biotic agents whose effects on tree mortality may reverse expectations based on stress physiology. We conclude with a path forward that emphasizes the need for an integrative approach to stress physiology and biotic agent dynamics when assessing forest risk to drought-driven morality in a changing climate.