The increased frequency and severity of drought events due to climate warming is negatively affecting tree radial growth, particularly in drought-prone regions, such as, e.g., the Mediterranean. In this climate change hotspot, populations of the same tree species may show different growth responses to climate, due to the great variety of microclimates and environments that characterise this biogeographic region. In this study, we analysed growth-climate relationships and growth responses to drought events (i.e., resistance, recovery, and resilience) in 13 forest stands of black pine (Pinus nigra Arnold), encompassing the whole and peculiar distribution range of the ssp. laricio (Calabria, Sicily, Sardinia, and Corsica). Analysis focussed on the 1981–2010 period, which is commonly covered at all sites. Stem radial growth of trees increased under a positive spring/summer water balance. However, abundant winter precipitation had a negative impact on stem radial growth. Populations in Corsica were more sensitive to drought, showing lower resistance and resilience than those in Sicily and Sardinia. Older trees were more resistant to drought events than younger trees. Our results highlight that population-specific responses to drought events are mainly explained by tree age and local environment, suggesting geographically related patterns in tree growth and forest productivity correspond to different populations. Intraspecific variability in sensitivity to drought events should be included in species distribution models to predict the range of forest productivity responses to climate change.

由于气候变暖导致的干旱事件的频率和严重程度增加对树木径向生长产生负面影响，特别是在干旱多发地区，例如地中海。在这个气候变化热点地区，由于该生物地理区域的小气候和环境多种多样，同一树种的种群可能对气候表现出不同的生长反应。在本研究中，我们分析了 13 个黑松 ( Pinus nigra Arnold)林分的生长-气候关系和生长对干旱事件的响应（即抗性、恢复和恢复力），涵盖了 ssp 的整个独特分布范围。拉里西奥（卡拉布里亚、西西里岛、撒丁岛和科西嘉岛）。分析集中在 1981-2010 年期间，通常涵盖所有地点。在春季/夏季水平衡正的情况下，树木的茎径向生长增加。然而，丰富的冬季降水对茎的径向生长产生了负面影响。科西嘉岛的人口对干旱更敏感，表现出比西西里岛和撒丁岛更低的抵抗力和复原力。老树比年轻树更能抵抗干旱事件。我们的研究结果强调，特定人群对干旱事件的反应主要由树龄和当地环境解释，这表明树木生长和森林生产力的地理相关模式对应于不同的人群。