Biondi Franco, Meko David M, Piovesan Gianluca
DendroLab, Department of Natural Resources and Environmental Science, University of Nevada, Reno, NV 89557, USA.
Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ 85721, USA.
iScience. 2023 Feb 3;26(3):106138. doi: 10.1016/j.isci.2023.106138. eCollection 2023 Mar 17.
The public-domain International Tree-Ring Data Bank (ITRDB) is an under-utilized dataset to improve existing estimates of global tree longevity. We used the longest continuous ring-width series of existing ITRDB collections as an index of maximum tree age for that species and site. Using a total of 3,689 collections, we obtained longevity estimates for 237 unique tree species, 157 conifers and 80 angiosperms, distributed all over the world. More than half of the species (167) were represented by no more than 10 collections, and a similar number of species (144) reached longevity greater than 300 years. Maximum tree ages exceeded 1,000 years for several species (22), all of them conifers, whereas angiosperm longevity peaked around 500 years. Given the current emphasis on identifying human-induced impacts on global systems, detailed analyses of ITRDB holdings provide one of the most reliable sources of information for tree longevity as an ecological trait.
公共领域的国际树木年轮数据库（ITRDB）是一个未得到充分利用的数据集，可用于改进现有的全球树木寿命估计。我们使用了现有ITRDB馆藏中最长的连续年轮宽度序列作为该物种和地点最大树龄的指标。我们总共使用了3689个馆藏，获得了分布在世界各地的237种独特树种的寿命估计，其中包括157种针叶树和80种被子植物。超过一半的物种（167种）所对应的馆藏数量不超过10个，并且有相近数量的物种（144种）寿命超过300年。有几个物种（22种）的最大树龄超过了1000年，它们均为针叶树，而被子植物的寿命峰值约为500年。鉴于当前重点在于识别人类对全球系统的影响，对ITRDB馆藏进行详细分析可提供作为一种生态特征的树木寿命最可靠的信息来源之一。
