Understanding the main ecological constraints on plants' adaptive strategies to tolerate multiple abiotic stresses is a central topic in plant ecology. We aimed to uncover such constraints by analysing how the interactions between climate, soil features and species functional traits co‐determine the distribution and diversity of stress tolerance strategies to drought, shade, cold and waterlogging in woody plants of the Northern Hemisphere. Functional traits and soil fertility predominantly determined drought and waterlogging/cold tolerance strategies, while climatic factors strongly influenced shade tolerance. We describe the observed patterns by defining ‘stress tolerance biomes’ and ‘polytolerance hotspots’, that is, geographic regions where woody plant assemblages have converged to specific tolerance strategies and where the coexistence of multiple tolerance strategies is frequent. The depiction of these regions provides the first macroecological overview of the main environmental and functional requirements underlying the ecological limits to the diversity of abiotic stress tolerance strategies in woody plants.

中文翻译：

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北半球木本植物非生物胁迫耐受性的宏观生态学：耐受性生物群落和多耐受热点


了解植物耐受多种非生物胁迫的适应性策略的主要生态限制是植物生态学的一个中心话题。我们旨在通过分析气候、土壤特征和物种功能性状之间的相互作用如何共同决定北半球木本植物对干旱、遮荫、寒冷和内涝的胁迫耐受策略的分布和多样性来揭示这些限制。功能性状和土壤肥力主要决定了干旱和耐涝/耐寒策略，而气候因素强烈影响耐阴性。我们通过定义 “胁迫耐受性生物群落 ”和 “多容忍热点 ”来描述观察到的模式，即木本植物组合已经收敛到特定容忍策略的地理区域，并且多种容忍策略经常共存。对这些区域的描述首次提供了木本植物非生物胁迫耐受策略多样性的生态极限的主要环境和功能要求的宏观生态概述。