Abstract Scots pine (Pinus sylvestris L.) growing in 16 sites in three industrial regions in Poland was analysed to delineate dendroclimatologically uniform areas. A dendrochronological and mass spectrometric analysis revealed the following: a dry and sunny previous September, low winter temperature, and moisture supply in July limit the radial growth of the pines in all the regions. The weather conditions of the current growing season have been the most strongly reflected in the isotopic ratio. Positive relationships were noted between δ13C and temperature and δ13C and sunshine. A negative relationship was observed between δ13C and precipitation and δ13C and humidity. At the same time, a positive relationship was noted between δ18O and sunshine and δ18O and temperature, but negative between δ18O and humidity. The climate signal recorded in the stable isotope composition was temporally unstable and only for a few of the climatic parameters did we find temporally stable climate signals. However, variability in the strength and direction of the relationships between variables has been observed. In general, the weather in July and August is important for determining the δ13C and δ18O signals. Instability can reflect the physiological adaptation of the plants to changes in the ecosystem.

中文翻译：

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在二氧化碳升高期间，波兰最工业化地区的年轮宽度和松树年轮的稳定同位素组成作为气候指标

摘要 对生长在波兰三个工业区 16 个地点的苏格兰松 (Pinus sylvestris L.) 进行了分析，以划定树木气候学上一致的区域。树木年代学和质谱分析表明：去年 9 月干燥晴朗，冬季低温和 7 月的水分供应限制了所有地区松树的径向生长。当前生长季节的天气条件在同位素比率中得到了最强烈的反映。δ13​​C 与温度和 δ13C 与日照之间存在正相关关系。在 δ13C 与降水和 δ13C 与湿度之间观察到负相关。同时，δ18O与日照、δ18O与温度呈正相关，δ18O与湿度呈负相关。稳定同位素组成中记录的气候信号在时间上不稳定，我们仅在少数气候参数中找到了时间稳定的气候信号。然而，已经观察到变量之间关系的强度和方向的可变性。一般来说，7 月和 8 月的天气对于确定 δ13C 和 δ18O 信号很重要。不稳定性可以反映植物对生态系统变化的生理适应。