Dendrochronologia最新文献_第7页

Climate driven divergence of growth resilience of Picea crassifolia from semi-arid to semi-humid habitats 半干旱-半湿润生境下云杉生长恢复力的气候差异

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-12-01 Epub Date: 2025-10-10 DOI: 10.1016/j.dendro.2025.126428

Zhengdong Guo , Liang Jiao , Ruhong Xue , Yarong Qin , Kuan Zhang , Peng Zhang , Xuge Wang , Xin Yuan , Weiyin Shi

Analyzing the growth differences of Picea crassifolia across distinct habitats and elevational gradients will improve our understanding of tree climate adaptation strategies under climate change. Tree ring cores were collected from high, middle, and low elevation P. crassifolia stands in the Helan Mountains (dry habitat) and Qilian Mountains (humid habitat) of northwest China. We investigated radial growth dynamics, quantified the relative importance of temperature, precipitation, and drought on growth, and assessed ecological resilience patterns to drought stress. The results showed (1) trees in dry habitats exhibited an initial growth increase followed by decline, with drought dominating radial growth (50.90 %). In contrast, trees in humid habitats showed sustained growth acceleration primarily driven by temperature (69.96 %). (2) P. crassifolia in dry habitats adopted a survival-priority strategy characterized by low resistance–high recovery to drought stress, whereas humid habitat trees displayed a growth-priority strategy with high resistance–low recovery. (3) elevation gradients significantly amplified the divergence of P. crassifolia trade-off strategies in dry habitats (p < 0.05), but exerted minimal effects in humid habitats. Our research demonstrates that hydrothermal combinations drive growth divergence of P. crassifolia across habitats by modulating their climate responses and trade-off strategies. Differentiated forest management strategies are urgently needed to address growth decline in dry habitats and recovery risks in humid habitats.

分析不同生境和海拔梯度下云杉的生长差异，有助于我们更好地认识气候变化下树木的气候适应策略。对贺兰山（干燥生境）和祁连山（湿润生境）高、中、低海拔的沙棘林进行了年轮核采集。我们研究了径向生长动态，量化了温度、降水和干旱对生长的相对重要性，并评估了对干旱胁迫的生态恢复模式。结果表明：(1)干燥生境下树木的生长表现为先增后降，径向生长以干旱为主（50.90% %）；相比之下，潮湿生境的树木表现出持续的生长加速，主要是由温度驱动的（69.96 %）。(2)干燥生境的沙棘林对干旱胁迫表现出低抗性-高恢复的生存优先策略，湿润生境的沙棘林则表现出高抗性-低恢复的生长优先策略。(3)海拔梯度显著放大了干旱生境下沙棘林权衡策略的差异（p <； 0.05），但对湿润生境的影响很小。我们的研究表明，热液组合通过调节其气候响应和权衡策略，驱动了沙棘科植物在不同栖息地的生长差异。迫切需要采取差异化的森林管理战略，以解决干旱生境的生长下降和潮湿生境的恢复风险。

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引用次数: 0

Non-destructive dendrochronology of a human-sized wooden sculpture of Saint Louis using X-ray computed tomography and micro-imaging 使用x射线计算机断层扫描和显微成像对圣路易斯真人大小的木制雕塑进行无损年代学研究

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-12-01 Epub Date: 2025-09-06 DOI: 10.1016/j.dendro.2025.126419

Rūtilė Pukienė , Elena Jasiūnienė , Akmis Lomsargis , Rapolas Vedrickas

Non-invasive methods are increasingly used in dendrochronological studies of historical wooden objects, though typically limited to small- and medium-sized items. This study investigated the feasibility of applying computed tomography (CT) to a human-sized wooden artefact. An industrial X-ray 3D CT scanner was used to scan a polychrome statue of Saint Louis (1214–1270), made from Scots pine (Pinus sylvestris), measuring 170 × 75 × 35 cm. Due to the object's large size, a resolution of 128 µm was achieved, allowing detection of annual rings as narrow as 0.5 mm and reconstruction of a 111-year ring-width sequence. To extend the chronology, the outermost rings were documented through digital microphotography on an exposed semi-radial surface on the back side of the sculpture—an area inaccessible to CT due to physical constraints. This supplemental analysis provided an additional 117 years, resulting in a combined 228-year series dated to 1501–1728. The sequence shows strong correlation with the Riga Dannenstern House chronology, supporting a timber origin in northeastern Lithuania, southern Latvia, or northern Belarus. The presence of 87 sapwood rings suggests a most probably felling date between 1728 and 1736. The dendrochronological dating challenges earlier hypothesis that attributed the sculpture to the first half of the 17th century or even the 16th century. Moreover, the study demonstrates the effectiveness and practicality of applying industrial X-ray CT to large-scale wooden sculptures, particularly when supplemented by direct ring-width measurements from exposed surfaces.

非侵入性方法越来越多地用于历史木器的树木年代学研究，尽管通常仅限于中小型物品。本研究探讨了将计算机断层扫描（CT）应用于人体大小的木制工艺品的可行性。使用工业x射线3D CT扫描仪扫描了由苏格兰松（Pinus sylvestris）制成的彩色圣路易斯雕像（1214-1270），尺寸为170 × 75 × 35 cm。由于物体的大尺寸，实现了128 µm的分辨率，可以检测到窄至0.5 mm的年轮，并重建111年的年轮宽度序列。为了延长时间，通过数字显微摄影在雕塑背面暴露的半径向表面记录了最外层的环-由于物理限制，CT无法进入该区域。这一补充分析提供了额外的117年，从而得出1501-1728年的228年序列。序列显示与里加Dannenstern住宅的年代有很强的相关性，支持立陶宛东北部，拉脱维亚南部或白俄罗斯北部的木材起源。87个边木环的存在表明最可能的砍伐日期是在1728年到1736年之间。树木年代测定法挑战了先前的假设，即将雕塑归因于17世纪上半叶甚至16世纪。此外，该研究还证明了将工业x射线CT应用于大型木制雕塑的有效性和实用性，特别是当直接从暴露的表面测量环宽时。

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引用次数: 0

Chemical and anatomical signals of past volcanic eruptions in tree–ring records from Northern Patagonia 巴塔哥尼亚北部树木年轮记录中过去火山喷发的化学和解剖学信号

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-12-01 Epub Date: 2025-09-03 DOI: 10.1016/j.dendro.2025.126406

Mauricio Montiel , Mauro E. González , Ariel A. Muñoz , Duncan A. Christie , Paul R. Sheppard

We assessed anatomical and dendrochemical variations in Nothofagus pumilio annual tree–rings from Andean forests in Northern Patagonia following two VEI ≥ 3 eruptions of the Puyehue–Cordón Caulle Volcanic Complex in 1921–22 and 2011. White rings formed due to tephra–induced defoliation showed decreased or unchanged vessel lumen diameter, increased vessel density, increased fiber lumen diameter, and reduced fiber wall thickness, suggesting reduced structural resistance. Dendrochemical analysis revealed increased concentrations of Mg, Al, K, Ca, Ni, Ba, and Fe in 1921, and Mg, K, Ca, Mn, Cu, Zn, and Ba in 2011. While some elements retained in tree rings align with tephra composition, short–term leaching of soluble elements in tephra likely influenced their final distribution. Differences in chemical responses between eruptions are attributed to seasonal timing and tree phenology. We discuss the potential mechanisms of chemical element uptake and translocation in trees following tephra fall, highlighting the role of bark and roots in soil–plant interactions. These findings provide new insights into the dynamic interactions between trees and deposited tephra, as well as understanding the behavior of chemical elements absorbed in the short term. This information could be useful for the reconstruction of past volcanic eruptions and for understanding ecosystem responses to volcanic disturbances.

在1921-22年和2011年Puyehue-Cordón Caulle火山群两次VEI≥ 3的喷发后，我们评估了北巴塔哥尼亚安第斯森林中Nothofagus pumilio年轮的解剖和树木化学变化。白环的形成表现为血管管腔直径减小或不变，血管密度增大，纤维管腔直径增大，纤维壁厚减小，表明结构阻力降低。树木化学分析显示，1921年Mg、Al、K、Ca、Ni、Ba和Fe浓度增加，2011年Mg、K、Ca、Mn、Cu、Zn和Ba浓度增加。虽然树木年轮中保留的一些元素与麻黄成分一致，但麻黄中可溶性元素的短期浸出可能影响了它们的最终分布。火山喷发之间化学反应的差异归因于季节时间和树木物候。我们讨论了藤属植物凋落后树木化学元素吸收和转运的潜在机制，强调了树皮和根在土壤-植物相互作用中的作用。这些发现为研究树木与沉积的樟脑之间的动态相互作用提供了新的见解，也为理解化学元素在短期内被吸收的行为提供了新的见解。这些信息对于重建过去的火山喷发和了解生态系统对火山扰动的反应是有用的。

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引用次数: 0

Corrigendum to “Tree rings indicate hazards related to a waterside landslide in the Northern Apennines, Italy–A preliminary step towards forecasting landslides and related tsunami” [Dendrochronologia 92 (2025) 126379] “树木年轮显示与意大利亚平宁山脉北部水边滑坡有关的危险——预测滑坡和相关海啸的初步步骤”的勘误表[树木年表92 (2025)126379]

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-12-01 Epub Date: 2025-09-10 DOI: 10.1016/j.dendro.2025.126403

Ireneusz Malik , Michael Maerker , Małgorzata Wistuba , Elżbieta Gorczyca , Patrizio Torrese , Manuel La Licata , Yang Yu , Beata Woskowicz-Ślęzak , Anna Bieniasz

引用次数: 0

Climatic drivers of growth and intra-annual wood density fluctuations in juniper species from seasonally dry environments 季节性干燥环境下桧种生长的气候驱动因素和年际木材密度波动

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-12-01 Epub Date: 2025-10-25 DOI: 10.1016/j.dendro.2025.126437

Elisa Tamudo , Antonio Gazol , Ester González de Andrés , Cristina Valeriano , J. Julio Camarero

Shrub species are expected to substitute trees under more arid conditions but how they respond to climate variability in terms of growth and wood-anatomical features is still scarcely understood. Intra-annual density fluctuations (IADFs) are wood-anatomical features widely used to assess how woody plant species respond to climate variability in seasonally dry regions. We investigated how climatic conditions and growth form affect the radial growth responses of four juniper species (Juniperus communis, J. oxycedrus, J. phoenicea and J. thurifera) in Mediterranean Spain. Radial growth and the production of latewood IADFs were measured using dendrochronology. Their relationship with climate variables were also quantified in twelve sites across a continental-coastal gradient. Growth and IADF responses to climate were modulated by species, site and tree factors in juniper species. The series of ring-width indices shared more common variability than IADFs series. Age negatively affected IADF formation, while diameter increased it. Coastal junipers, mainly J. phoenicea, produced more IADFs than those dominant in continental areas such as J. communis. High autumn precipitation and low maximum temperatures enhanced IADF formation. In continental semi-arid sites, J. thurifera trees formed more IADFs and were more sensitive to autumn conditions compared to coexisting J. phoenicea shrubs. J. communis was less responsive to climate variability than J. oxycedrus, which was negatively impacted by spring-to-autumn dry conditions. J. phoenicea growth was also constrained by dry conditions, but warm early-autumn temperatures enhanced it. In conclusion, growth and IADFs production represent different measures of resilience capacity of woody species in seasonally dry environments.

灌木物种有望在更干旱的条件下取代乔木，但它们如何在生长和木材解剖特征方面对气候变化作出反应仍然知之甚少。年际密度波动（IADFs）是木材解剖学特征，广泛用于评估木本植物物种对季节性干旱地区气候变化的反应。研究了气候条件和生长形态对西班牙地中海地区四种杜松（Juniperus communis， J. oxycedrus， J. phoenicea和J. thurifera）径向生长响应的影响。采用树木年代学方法测定径向生长和晚木iadf的产量。它们与气候变量的关系也在横跨大陆-海岸梯度的12个地点进行了量化。杉树生长和IADF对气候的响应受树种、立地和乔木因子的调节。环宽指数系列比IADFs系列具有更多的共同变异性。年龄对IADF的形成有负面影响，而直径则增加了IADF的形成。沿海地区的刺柏，以刺柏为主，产生的iadf高于大陆地区的刺柏。高秋季降水和低最高气温促进了IADF的形成。在大陆半干旱立地，相比于共生的凤梨灌木，沙棘乔木形成了更多的iadf，对秋季条件更敏感。柽柳对气候变率的响应较弱，而柽柳受春秋季干旱条件的负面影响。干燥条件也抑制了凤梨的生长，但温暖的初秋温度促进了凤梨的生长。综上所述，生长和iadf产量代表了木本物种在季节性干燥环境中恢复能力的不同指标。

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引用次数: 0

Pan-alpine summer temperatures since 742 CE 公元742年以来的泛阿尔卑斯夏季气温

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-12-01 Epub Date: 2025-10-12 DOI: 10.1016/j.dendro.2025.126432

Jan Esper , Frederick Reinig , Max Torbenson , Edurne Martinez del Castillo , Marcel Kunz , Alberto Arzac , Marco Carrer , Feng Chen , Alper K. Kadioglu , Alexander V. Kirdyanov , Ernesto Tejedor , Mirek Trnka , Ulf Büntgen

Albeit labor-intensive, tree-ring maximum latewood density (MXD) has become a prime proxy to reconstruct inter-annual to multi-centennial climate variability. We here combine such data from five valleys in Austria, France and Switzerland to present a June-September temperature history for the European Alps reaching back to 742 CE. The pan-alpine record correlates at r_1880–2023 = 0.89 with observational data and provides evidence for a prolonged Little Ice Age (LIA) from the 1250s to 1850s CE, during which summer temperatures were 0.59 °C cooler compared to the preceding Medieval Warm Period (MWP) from the 880s to 1240s CE. Temperatures rose by 3.65 °C from the coldest decade in the 1810s, which includes the 1816 CE post-Tambora “year without a summer”, to the warmest decade in the 2010s. The warmest summer in our reconstruction occurred in 2003 CE (+ 2.71 °C) and exceeds the warmest naturally forced summer in 970 CE (+ 2.19 °C) by more than 0.5 °C. This difference is non-significant, however, if we consider the increasing uncertainties back in time when fewer sites and trees contributed to the reconstruction. The pan-alpine record is the result of conducting MXD measurements over the past two decades in Swiss and German laboratories and sets a new standard in terms of explained variance and pre-instrumental temperature variability estimation in the European Alps.

树木年轮最大迟木密度（MXD）虽然是劳动密集型的，但已成为重建年际至百年气候变率的主要指标。在这里，我们将奥地利、法国和瑞士五个山谷的数据结合起来，呈现出欧洲阿尔卑斯山6月至9月的温度历史，可追溯到公元742年。泛高山记录在r1880-2023 = 0.89与观测资料相关，并提供了1250年代至1850年代的小冰期（LIA）延长的证据，在此期间，夏季气温比之前的中世纪暖期（MWP）低0.59 °C（880 - 1240年代）。从19世纪10年代最冷的十年（包括1816年的“无夏之年”）到2010年代最暖的十年，气温上升了3.65 °C。在我们的重建中，最热的夏季出现在2003年（+ 2.71 °C），比970年（+ 2.19 °C）最热的夏季高出0.5 °C以上。然而，如果我们考虑到重建过程中越来越少的场地和树木所带来的不确定性，这种差异就不显著了。泛阿尔卑斯记录是瑞士和德国实验室在过去二十年中进行MXD测量的结果，并在欧洲阿尔卑斯地区的解释方差和仪器前温度变率估计方面设定了新的标准。

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引用次数: 0

Improving chronology for Aotearoa New Zealand: New research in tree-ring derived radiocarbon and stable isotope time series 改进新西兰奥特罗阿的年代学：树木年轮衍生放射性碳和稳定同位素时间序列的新研究

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-12-01 Epub Date: 2025-10-24 DOI: 10.1016/j.dendro.2025.126435

Gretel Boswijk , Neil J. Loader , Alan Hogg , Luitgard Schwendenmann , Melanesia Boseren , Dilys Johns

Preserved Māori wooden artefacts (taonga (treasures)) in Aotearoa New Zealand (NZ), including house components, palisade posts, carvings and canoes, provide valuable insights into the past. Understanding of the age of such objects can add value to their interpretation, determine their association with periods of social, environmental or cultural transition, and help inform future conservation and heritage protection. Empirical scientific methods such as radiocarbon dating are used to establish the calendar age of such objects. However, in NZ limitations on the accuracy of dates are imposed by radiocarbon calibration uncertainties during the last ∼750 years, coincident with the entirety of human occupation in NZ. Additionally, while elsewhere dendrochronology is commonly applied to archaeological wood, in NZ this approach is hampered by species and growth ring characteristics. As a result, dendroarchaeology has been limited to dating kauri (Agathis australis (D.Don) Lindl.) wood from 19th and early 20th century contexts. Here we describe a long-term project employing tree-ring based ¹⁴C calibration and stable isotope research that seeks to address these challenges and improve opportunities for the calendar-dating of archaeological sites and taonga in NZ.

保存下来的Māori木制文物（taonga（宝物）），包括房屋构件、栅栏柱、雕刻和独木舟，为了解过去提供了宝贵的见解。了解这些文物的年代可以增加对它们的解释的价值，确定它们与社会、环境或文化转型时期的联系，并有助于为未来的保护和遗产保护提供信息。放射性碳定年等经验科学方法被用来确定这些物体的日历年龄。然而，在新西兰，对日期准确性的限制是由最近~ 750年的放射性碳校准不确定性造成的，这与新西兰整个人类活动时间一致。此外，虽然其他地方的树木年代学通常应用于考古木材，但在新西兰，这种方法受到物种和生长年轮特征的阻碍。因此，树木考古学仅限于19世纪和20世纪早期的贝壳杉（Agathis australis (D.Don) Lindl.）木材的年代测定。在这里，我们描述了一个长期项目，采用基于树木年轮的14C校准和稳定同位素研究，旨在解决这些挑战，并为新西兰考古遗址和taonga的日历定年提供机会。

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引用次数: 0

From correlation to mechanism: A bibliometric analysis of dendrochronological research evolution on tree growth responses to climate change 从相关性到机制：树木生长对气候变化响应的年代学研究演变的文献计量学分析

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-12-01 Epub Date: 2025-10-27 DOI: 10.1016/j.dendro.2025.126440

Qi Li , Jinbao Li , Tsun Fung Au , Teng Li

The impact of climate change on tree radial growth is a central issue in global change ecology, for which dendrochronology provides crucial long-term data. Here, we conducted a bibliometric and visual analysis of dendrochronological research on tree growth responses to climate change based on 2199 articles from the Web of Science database (2000–2024). The objective is to systematically delineate the developmental landscape of this vibrant, methodologically advancing, and emerging field. The analysis reveals a significant increase in annual publications, driven by technological innovations, enhanced data-sharing mechanisms, and extensive international collaborations, with China, the United States, and European nations constituting the core research contributors. The research focus has profoundly evolved from early climate reconstruction to a detailed deconstruction of the multi-scale “climate-driven–physiological response–ecosystem functioning” mechanisms underlying tree responses. While the antagonistic interplay between the CO₂ fertilization effect and extreme climate stress remains a persistent hotspot, recent research frontiers have increasingly centered on tree adaptation mechanisms under extreme climate events, spatial heterogeneity in responses, and forest resistance and resilience. Crucially, technological advancements and the integration of multidimensional indicators are propelling the field from describing correlations towards investigating the fundamental causal mechanisms by which climate change impacts tree growth. This study systematically elucidates the climate response mechanisms and dynamic trends of tree growth under climate change and analyzes the evolutionary pathways of research hotspots. Its findings offer scientific data to support the formulation of differentiated forest management strategies and the optimization of regional climate policies.

气候变化对树木径向生长的影响是全球变化生态学的一个核心问题，树木年代学为其提供了重要的长期数据。本文基于Web of Science数据库2000-2024年2199篇文章，对树木生长对气候变化响应的年代学研究进行了文献计量学和视觉分析。目标是系统地描绘这一充满活力、方法进步和新兴领域的发展前景。分析显示，在技术创新、增强的数据共享机制和广泛的国际合作的推动下，年度出版物显著增加，中国、美国和欧洲国家构成了核心研究贡献者。研究重点已从早期气候重建深刻演变为对树木响应背后的多尺度“气候驱动-生理反应-生态系统功能”机制的详细解构。虽然CO 2施肥效应与极端气候胁迫之间的拮抗相互作用一直是研究热点，但近年来的研究前沿越来越集中在极端气候事件下树木的适应机制、响应的空间异质性以及森林的抵抗和恢复力等方面。至关重要的是，技术进步和多维指标的整合正在推动该领域从描述相关性转向调查气候变化影响树木生长的基本因果机制。本研究系统阐述了气候变化下树木生长的气候响应机制和动态趋势，并分析了研究热点的演化路径。研究结果为制定差别化森林经营战略和优化区域气候政策提供了科学依据。

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引用次数: 0

ISODATE – Software for stable isotope dendrochronology 稳定同位素树木年代学软件

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-10-01 Epub Date: 2025-07-09 DOI: 10.1016/j.dendro.2025.126385

Darren Davies , Neil J. Loader , Danny McCarroll , Dan Miles , Christopher Bronk Ramsey

ISODATE is a complete dating package for stable oxygen isotope dendrochronology that offers a user-friendly workspace for processing, crossmatching and precisely dating stable isotope chronologies. ISODATE provides the first standardisation of approach for isotope laboratories and the heritage sector for dating and the reporting of dates. The software produces downloadable figures and CSV files containing series alignments and statistical results. The application is freely and publicly available online (isodate.swansea.ac.uk). A manual and guided example accompanies the software. It is hoped that community-led refinements and additional reference chronologies will be added to ISODATE as the technique develops and is adopted more widely.

ISODATE是一个完整的稳定氧同位素年代学定年包，为处理、交叉匹配和精确定年稳定同位素年代学提供了一个用户友好的工作空间。ISODATE为同位素实验室和文物部门提供了测定年代和报告日期的第一个标准化方法。该软件生成可下载的数字和CSV文件，其中包含系列比对和统计结果。该应用程序是免费和公开的在线（isodate.swansea.ac.uk）。该软件附带了一个手册和指导示例。希望随着技术的发展和更广泛的采用，社区主导的改进和额外的参考年表将被添加到ISODATE中。

引用次数: 0

Vegetation growth carryover and lagged climatic effect at Juniperus seravschanica different scales: From tree rings to remote sensing data 不同尺度杉木植被生长携带与滞后气候效应：从年轮到遥感数据

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-10-01 Epub Date: 2025-07-16 DOI: 10.1016/j.dendro.2025.126393

Jiuqi Chen , Yonghui Wang , Tongwen Zhang , Kexiang Liu , Shulong Yu , Kailong Guo , Zhihao He , Beihua Liang

Vegetation growth is influenced not only by current climatic conditions but also by growth legacy signals and preceding climate variability. To investigate the impacts of vegetation growth carryover (VGC) and lagged climate effects (LCE) on vegetation at two distinct scales, tree-ring width (TRW) and enhanced vegetation index (EVI), we focused on Juniperus seravschanica, a dominant species in Tajikistan. Using both TRW and EVI datasets, we employed a vector autoregression (VAR) model to analyze the intensity and duration of vegetation responses to climate through VGC and LCE at different spatial and temporal scales. Our results revealed that both the VGC and LCE effects were stronger in TRW than in EVI. For both indicators, the peak intensity of LCE responses occurred within a lag of 0–3 years, suggesting that this time window is optimal for studying lagged climate effects on vegetation. Except in ZTW (EVI), the contribution of VGC to vegetation growth is much stronger than that of LCE. Moreover, VGC and LCE were found to be decoupled, indicating that their influences on vegetation growth are independent of each other. Ultimately, Juniperus seravschanica appears to adapt to harsh environmental conditions by modulating its growth through both VGC and LCE mechanisms. Investigating VGC and LCE using multi-scale vegetation indicators provides deeper insights into forest ecosystem functioning and offers a more comprehensive perspective for studying vegetation dynamics over time. These findings enhance our understanding of vegetation–climate interactions and offer valuable guidance for vegetation management in arid regions under the context of global climate change.

植被生长不仅受到当前气候条件的影响，还受到生长遗留信号和前期气候变率的影响。为了研究植被生长延续（VGC）和滞后气候效应（LCE）对两种不同尺度（树轮宽度（TRW）和增强植被指数（EVI））的影响，本文以塔吉克斯坦优势种刺柏（Juniperus seravschanica）为研究对象。利用TRW和EVI数据集，采用向量自回归（VAR）模型分析了不同时空尺度下植被通过VGC和LCE对气候响应的强度和持续时间。我们的研究结果表明，VGC和LCE效应在TRW中强于EVI。对于这两个指标，LCE响应的峰值强度发生在滞后的0-3年，这表明这个时间窗口是研究滞后气候对植被影响的最佳时间窗口。除ZTW （EVI）外，VGC对植被生长的贡献远大于LCE。此外，VGC和LCE是解耦的，表明它们对植被生长的影响是相互独立的。最终，Juniperus seravschanica似乎通过VGC和LCE机制调节其生长来适应恶劣的环境条件。利用多尺度植被指标研究VGC和LCE，可以更深入地了解森林生态系统功能，为研究植被动态提供更全面的视角。这些发现增强了我们对植被-气候相互作用的认识，并为全球气候变化背景下干旱区植被管理提供了有价值的指导。

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引用次数: 0