Beyond maximum density: multi-parameter insights into Scots pine climate sensitivity

IF 2.1 3区农林科学 Q2 FORESTRY

Trees Pub Date : 2025-09-22 DOI:10.1007/s00468-025-02681-3

Inga K. Homfeld, Frederick Reinig, Edurne Martinez del Castillo, Max C. A. Torbenson, Oliver Konter, Rob Wilson, Paul J. Krusic, Neil J. Loader, Hakan Grudd, Emily Reid, Kayleigh Letherbarrow, Jan Esper

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引用次数: 0

Key message

Climate sensitivity of Pinus sylvestris has changed in minimum density while maximum density remains mostly stable, suggesting the use of additional density parameters could help detect response changes.

Abstract

As one of Eurasia's most widely distributed conifer species, Pinus sylvestris L. is frequently used in dendroclimatological reconstructions based on tree-ring width (TRW) and maximum latewood density (MXD). However, the climatic signals of additional parameters such as earlywood/latewood density (EWD/LWD) or minimum density (MND) are often overlooked, leaving their skill unexplored. Here, we investigate the growth responses of multiple P. sylvestris tree-ring parameters to ongoing climate change at two sites with contrasting climatic conditions using well-replicated density data from Scotland and Sweden. Correlations with mean, minimum, and maximum temperatures are strongest for LWD and MXD at both sites, with coefficients ranging from 0.5 to 0.7 for July, August, and the June–August season (p < 0.05). A significant (p < 0.05) negative correlation between MND and July temperatures was identified in the Swedish Torneträsk (TOR) data (p < 0.05), which diminished since the late twentieth century. A comparable inverse MND temperature signal and change into the twenty-first century is not reflected in northern Scotland’s overall wetter and warmer site, suggesting a fundamental physiological change in tree-ring formation under global warming. A shift in the sensitivity of tree growth at northern European sites could reduce the effectiveness of proxies from such locations, posing implications for high-resolution climate reconstructions.

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超越最大密度：对苏格兰松气候敏感性的多参数见解

小松的气候敏感性在最小密度下发生了变化，而最大密度基本保持稳定，表明使用额外的密度参数可以帮助检测响应变化。摘要西尔维斯松（Pinus sylvestris L.）是欧亚大陆分布最广泛的针叶林树种之一，常用于基于树轮宽度（TRW）和最大晚木密度（MXD）的树木气候重建。然而，诸如早期木材/晚期木材密度（EWD/LWD）或最小密度（MND）等附加参数的气候信号往往被忽视，使其技能未被探索。本文利用来自苏格兰和瑞典的密度数据，在两个不同气候条件的地点，研究了多种西林年轮参数对持续气候变化的响应。两个站点的LWD和MXD与平均、最低和最高温度的相关性最强，7月、8月和6 - 8月季节的系数在0.5 ~ 0.7之间（p < 0.05）。瑞典Torneträsk （TOR）数据（p < 0.05）发现MND与7月气温之间存在显著的负相关（p < 0.05），这种负相关自20世纪后期以来减弱。可比较的逆MND温度信号和进入21世纪的变化并没有反映在苏格兰北部整体更湿润和更温暖的地区，这表明全球变暖下树木年轮形成的基本生理变化。北欧地区树木生长敏感性的变化可能会降低这些地区代用物的有效性，从而对高分辨率气候重建产生影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Trees 农林科学-林学

CiteScore

4.50

自引率

4.30%

发文量

113

审稿时长

3.8 months

期刊介绍： Trees - Structure and Function publishes original articles on the physiology, biochemistry, functional anatomy, structure and ecology of trees and other woody plants. Also presented are articles concerned with pathology and technological problems, when they contribute to the basic understanding of structure and function of trees. In addition to original articles and short communications, the journal publishes reviews on selected topics concerning the structure and function of trees.