Department of Civil and Environmental Engineering, University of Perugia, Borgo XX Giugno 74, 06121, Perugia, Italy.
Int J Biometeorol. 2023 Oct;67(10):1607-1617. doi: 10.1007/s00484-023-02522-3. Epub 2023 Aug 1.
Plants have always been able to adapt to climate change by reacting through various responses, mainly at the phenological level. The aim of this work is to investigate the behavior of specific tree species located in two phenological gardens in central Italy in relation to the temperature increases recorded in recent years. Specifically, four main phenological phases, BBCH_11, BBCH_19, BBCH_91, and BBCH_65, were monitored during a 14-year time period. The data of the weeks corresponding to the first appearance of each phenological phase and the respective heat accumulations for each species were cross-referenced with the meteorological data recorded by the stations in the two considered areas. Based on average temperature, calculated over reference periods, the species were divided by creating "warm" year groups and "cold" year groups so as to better highlight any differences in the behavior of the same species. In addition, a strong correlation was shown between the maximum temperatures in February and the advances of phenological phases BBCH_11 and BBCH_65. Most of the tree species have shown strong adaptation to climate warming, changing the period of occurrence of the phases themselves.
植物一直能够通过各种反应来适应气候变化，主要表现在物候水平上。本研究的目的是调查位于意大利中部两个物候园内的特定树种的行为，以了解近年来记录的温度升高情况。具体来说，在 14 年的时间内，监测了四个主要物候期，即 BBCH_11、BBCH_19、BBCH_91 和 BBCH_65。将每个物候期首次出现的周数及其相应的物种热积累数据与两个研究区域的气象站记录的气象数据进行交叉参考。基于参考期的平均温度，通过创建“暖”年组和“冷”年组，对物种进行划分，以便更好地突出同一物种行为的差异。此外，还显示出 2 月的最高温度与物候期 BBCH_11 和 BBCH_65 的提前出现之间存在很强的相关性。大多数树种已经表现出对气候变暖的强烈适应，改变了物候期发生的时期。
