上个世纪欧洲无管理森林本底死亡率趋势

IF 5.6 1区 环境科学与生态学 Q1 ECOLOGY
Jokin Idoate-Lacasia, Jonas Stillhard, Jeanne Portier, Christof Bigler, Harald Bugmann, Thomas A. Nagel, Joan Casanelles-Abella, Yannek Käber, Tuomas Aakala, Markus Blaschke, Bogdan Brzeziecki, Marco Carrer, Eugenie Cateau, Georg Frank, Shawn Fraver, Jan Holik, Stanislav Kucbel, Anja Leyman, Peter Meyer, Renzo Motta, Pavel Samonil, Lucia Seebach, Miroslav Svoboda, Jerzy Szwagrzyk, Kris Vandekerkhove, Ondrej Vostarek, Tzvetan Zlatanov, Martina L. Hobi
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引用次数: 0

摘要

人为的气候变化导致世界范围内树木的本底死亡率上升。由于树木的生活史策略和生态位的不同,它们有不同的应对环境变化的方法。离生态位中心更远的树木可能会经历更高水平的气候压力和潜在的更高死亡率,而离生态位中心更近的树木可能会经历更高的种内竞争。为了研究导致树木死亡的非生物和生物因素的复杂相互作用,我们使用了一个全面的永久样地网络,并在1936年至2020年期间对欧洲299个无人管理的森林保护区进行了重复普查。该数据库包括150万条茎记录,覆盖853.7公顷的总采样面积。我们(1)计算了背景死亡率,(2)分析了死亡率的趋势,(3)调查了这些趋势与每棵树在其生态位内的位置之间的关系。我们使用物种分布模型(SDMs)来定位树木在其生态位内的位置,并使用广义线性混合模型(glmm)来模拟死亡率。我们观察到总体年背景死亡率中位数为1.1%。云杉为主的森林的年死亡率从1.5%增加到3%,增幅最大。同样,模型显示,随着时间的推移,橡树为主的森林的年死亡率显著增加,而山毛榉为主的森林的年死亡率显著下降。我们确定了关于树木在其生态位中的位置的三种不同的死亡率响应。对于橡树、云杉和山松,当它们远离生态位中心时,死亡率更高。角木、白蜡松和苏格兰松表现出相反的模式,而山毛榉和冷杉的特征几乎可以忽略与生态位中心距离的影响。合成。与之前的研究相反,我们的研究结果表明,在人为气候变化的影响下,欧洲天然林中的优势树种并没有持续地经历背景死亡率的增加。相反,由竞争物种(如山毛榉)主导的森林保护区可能受益于更温暖的生长条件。大多数被研究树种与生态位中心的距离没有明显的影响,表明其对环境胁迫具有较高的恢复力和适应性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Trends in background mortality in unmanaged forests across Europe over the last century

Trends in background mortality in unmanaged forests across Europe over the last century

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来源期刊
Journal of Ecology
Journal of Ecology 环境科学-生态学
CiteScore
10.90
自引率
5.50%
发文量
207
审稿时长
3.0 months
期刊介绍: Journal of Ecology publishes original research papers on all aspects of the ecology of plants (including algae), in both aquatic and terrestrial ecosystems. We do not publish papers concerned solely with cultivated plants and agricultural ecosystems. Studies of plant communities, populations or individual species are accepted, as well as studies of the interactions between plants and animals, fungi or bacteria, providing they focus on the ecology of the plants. We aim to bring important work using any ecological approach (including molecular techniques) to a wide international audience and therefore only publish papers with strong and ecological messages that advance our understanding of ecological principles.
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