Dendrochronologia最新文献_第4页

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 : 2025-10-27 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

Blue is the new colour of Indian Himalayan tree rings: A pilot study on blue intensity of Abies pindrow, a new climate proxy from Kashmir Valley, western Himalaya 蓝色是印度喜马拉雅树木年轮的新颜色：一项关于冷杉pindrow蓝色强度的初步研究，一种来自喜马拉雅西部克什米尔山谷的新气候代理

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-10-25 DOI: 10.1016/j.dendro.2025.126438

Santosh K. Shah , Tanveer W. Rahman , Nivedita Mehrotra , Lamginsang Thomte , Uttam Pandey , Anup Saikia , Gregory C. Wiles

This study presents initial results of a tree ring-based blue intensity (BI) study from the western (Indian) Himalayan region. We analysed 139 cross-dated tree core samples of Abies pindrow collected from Hirpora Wildlife Sanctuary (HWS) in the Kashmir Valley, western (Indian) Himalaya. This study was carried out to determine whether BI parameters can enhance tree-ring-based climate signals complementing previous dendroclimatic studies based on ring-widths (RW). We developed six chronologies: total ring width (TRW), earlywood width (EWW), latewood width (LWW), as well as latewood blue intensity (LWBI), earlywood blue intensity (EWBI) and delta blue intensity (deltaBI). Each of the six chronologies spans from 1728 to 2014 CE (287 years) and were correlated with monthly temperature (minimum, maximum and average) and precipitation records to assess their climatic response. The results demonstrated that distinct climate signals can be derived from RW and BI parameters. RW parameters capture moisture stress during the early growing season (May–June). In contrast, the BI parameters, particularly LWBI and deltaBI, yield strong positive correlations with average and maximum temperatures during the late summer (August–September). Additionally, LWBI and deltaBI series are positively associated with minimum winter-spring temperatures. We also evaluated the seasonal climatic response of both RW and BI parameters, assessing the temporal stability of these relationships and developed a transfer function based on a linear regression model. The overall climate signal identified for the BI parameters (LWBI and deltaBI) is distinct from RW and focused primarily on late summer (August–September). Thus, these results demonstrate the strong potential of blue intensity measurements in dendroclimatic reconstructions in the western (Indian) Himalaya.

本研究提出了一项基于树木年轮的喜马拉雅西部（印度）地区蓝色强度（BI）研究的初步结果。我们分析了在西喜马拉雅（印度）克什米尔山谷的Hirpora野生动物保护区（HWS）采集的139个冷杉（Abies pindrow）交叉年代的树核样本。本研究旨在确定BI参数是否可以增强基于树木年轮的气候信号，以补充以往基于年轮宽度（RW）的树木气候研究。我们开发了6种年表：总环宽（TRW）、早坞宽度（EWW）、晚坞宽度（LWW）以及晚木蓝强度（LWBI）、早坞蓝强度（EWBI）和三角洲蓝强度（deltaBI）。6个年表的时间跨度均为公元1728年至2014年（287年），并与月气温（最低、最高和平均）和降水记录相关，以评估其气候响应。结果表明，从RW和BI参数可以得到不同的气候信号。RW参数捕获生长季早期（5 - 6月）的水分胁迫。相比之下，BI参数，特别是LWBI和deltaBI，与夏末（8 - 9月）的平均和最高温度呈强烈的正相关。此外，LWBI和deltaBI序列与冬春最低气温呈正相关。我们还评估了RW和BI参数的季节气候响应，评估了这些关系的时间稳定性，并基于线性回归模型建立了传递函数。BI参数（LWBI和deltaBI）确定的整体气候信号与RW不同，主要集中在夏末（8月至9月）。因此，这些结果表明蓝色强度测量在喜马拉雅西部（印度）的树木气候重建中具有强大的潜力。

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引用次数: 0

Cistercian heritage in Pelplin, Poland. Dendrochronological dating of the covers of medieval codices 波兰佩尔普林的西多会遗产。中世纪抄本封面的树木年代测定

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-10-25 DOI: 10.1016/j.dendro.2025.126439

Barbara Gmińska-Nowak , Juliusz Raczkowski , Ewa Chlebus , Karl-Uwe Heussner

Wood was used as boards for codices throughout the Middle Ages. The boards provided excellent protection for the vulnerable pages of the codices and, together with the fastenings attached to them, prevented the parchment folios from deforming due to changes in relative humidity. Our research aimed to verify the dating of four codices from the collection of the Diocesan Library in Pelplin (Poland) and to assess their integrity. In doing so, we compared the dating results of the wood used for binding with information derived from such fields as materials science, book technology and paleography. We also analysed decoration, texts, and historical written sources. We examined four manuscripts written between the 12th and 14th centuries. Two codices, namely Petrus Lombardus, Commentaria in Epistolas Pauli PL-Pe 4(8) and Processionale cisterciense PL-Pe 156(204), were bound on beech boards. The other two – Homiliarium PL-Pe 1(2) and Biblia sacra PL-Pe 11(25) – were bound using oak boards. The dendrochronological research revealed that the binding of the manuscript Petrus Lombardus, Commentaria in Epistolas Pauli, written in the 13th century, preserved the original cover boards. The binding, however, had been refurbished at least twice. The last repair was most likely done in Pelplin at the end of the 15th century. As for the three other manuscripts (composite codices), we established the circumstances in which the codices were rebound: they were all rebound in Pelplin in the 14th century using new boards. This means that the Cistercian workshop in Pelplin began rebinding codices no later than the 14th century. In addition, our study shows the variety of wood used and indicate the geographical sources of wood supply.

整个中世纪，木材都被用作抄本的板。这些纸板为易损坏的书页提供了极好的保护，并与它们相连的紧固件一起，防止了羊皮纸开本因相对湿度的变化而变形。我们的研究旨在验证佩尔普林（波兰）教区图书馆收藏的四本抄本的日期，并评估其完整性。在此过程中，我们将用于装订的木材的定年结果与材料科学、图书技术和古文字等领域的信息进行了比较。我们还分析了装饰、文字和历史文字来源。我们检查了四份写于12世纪到14世纪之间的手稿。两个抄本，即Petrus Lombardus， Commentaria in Epistolas Pauli PL-Pe 4(8)和Processionale cisterciense PL-Pe 156(204)，被装订在山毛榉板上。另外两个——Homiliarium PL-Pe 1(2)和Biblia sacra PL-Pe 11（25）——用橡木板装订。树形年表研究显示，13世纪写的《彼得鲁斯·伦巴杜，保利书信集注释》手稿的装订保存了原始的封皮。然而，这本书的封面至少被翻新过两次。最后一次修缮很可能是15世纪末在佩尔普林完成的。至于其他三份手稿（复合抄本），我们确定了抄本被反弹的情况：它们都是14世纪在佩尔普林用新木板反弹的。这意味着佩尔普林的西多会作坊开始重新装订抄本的时间不晚于14世纪。此外，我们的研究显示了所用木材的种类，并指出了木材供应的地理来源。

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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 : 2025-10-25 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

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 : 2025-10-24 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

Potential and applications of stable oxygen isotope chronologies for tree-ring dating in South Korea 稳定氧同位素年代学在韩国树木年轮测年的潜力和应用

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-10-17 DOI: 10.1016/j.dendro.2025.126433

En-Bi Choi , Jun-Hui Park , Masaki Sano , Takeshi Nakatsuka , Jeong-Wook Seo

In this study, we investigated the effects of the overlap period, geographical distance, and filtering on the success of crossdating using oxygen isotope (δ¹⁸O_TR) chronologies established in South Korea. We also examined the reliability of a long-term central Japanese δ¹⁸O_TR chronology to date Korean samples with the aim of exploring strategies to overcome the limitations of existing Korean tree-ring dating chronologies. Using δ¹⁸O_TR chronologies developed from living trees, we analyzed seven Korean regions and two historical wooden structures. We applied a 9-year rectangular filter to minimize autocorrelation, and we performed crossdating using 20-, 40-, 60-, and 80-year segments. Irrespective of the region, all crossdating intervals exceeding 80 years yielded a 100 % success rate among the seven Korean dating chronologies. Filtered chronologies showed high success in dating historical buildings, with filtering being particularly important when crossdating samples were separated by large geographical distances. Dating was successful when the central Japanese chronology was used with Korean chronologies from the southeastern and southern coastal regions. A minimum overlap of 190–200 years was required to achieve a 100 % success rate across all intervals. Reliable tree-ring dating based on δ¹⁸O_TR chronologies requires filtering to detect signals, to use Korean chronologies with a minimum overlap of 80 years, and to apply statistical criteria such as 1/p and isolation factor (IF). Notably, the first successful crossdating between Korean and central Japanese chronologies demonstrates its potential to extend the timeline of tree-ring dating in Korean studies.

在这项研究中，我们研究了重叠周期、地理距离和过滤对使用韩国建立的氧同位素（δ18OTR）年表进行交叉测年成功的影响。我们还检验了日本中部长期δ18OTR年表对韩国样品定年的可靠性，目的是探索克服现有韩国树轮定年年表局限性的策略。利用活树的δ18OTR年表，我们分析了七个韩国地区和两个历史木结构。我们使用了一个9年的矩形过滤器来最小化自相关性，并使用20年、40年、60年和80年的片段进行交叉测年。无论在哪个地区，所有超过80年的交叉测年间隔在7个韩国测年年表中都获得了100% %的成功率。经过过滤的年表在确定历史建筑的年代方面显示出很高的成功率，当交叉年代测定的样本相隔很远的时候，过滤尤为重要。当日本中部的年表与韩国东南部和南部沿海地区的年表相结合时，年代测定是成功的。要在所有层段实现100% %的成功率，至少需要190-200年的重叠。基于δ18OTR年表的可靠树木年轮测年需要滤波来检测信号，使用最小重叠80年的韩国年表，并应用1/p和隔离因子（IF）等统计标准。值得注意的是，韩国与日本中部年表之间的首次成功交叉测年表明，它有可能延长韩国研究中树木年轮测年的时间。

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引用次数: 0

Tree-ring-based reconstruction of aboveground biomass in Cryptomeria japonica forests in Eastern Himalaya: dynamics and management implications 东喜马拉雅地区柳杉森林地上生物量的年轮重建：动态和管理意义

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-10-15 DOI: 10.1016/j.dendro.2025.126431

Wagmare Balraju , Rupesh Dhyani , Rajesh Joshi , Mayank Shekhar , Parminder Singh Ranhotra , Amalava Bhattacharyya

Forests in the Eastern Himalaya play a key role in carbon sequestration; yet, limitations of long-term data constrain comprehensive assessments of aboveground biomass (AGB) and forest productivity over time. To address this gap, we used tree rings as proxy data to analyze the basal area increment (BAI) and AGB over the last four decades in three Cryptomeria japonica forest sites in the Fambonglho Wildlife Sanctuary, East Sikkim, India, using 90 tree core samples from 45 trees. Results showed common site-specific variability in BAI and AGB over time, with growth rates ranging from site-specific growth trends (BAI range 1–54 cm²). Stand-level AGB consistently increased from 15 to 19.80 t ha⁻¹ between 1990 and 2015 CE. Moderate seasonal correlations were observed between spring-seasons' (March-May) normalized difference vegetation index (NDVI) and AGB at two sites, suggesting a link between vegetation growth and biomass production. Additionally, a stronger and statistically significant correlation was observed at high-frequency temporal scales, indicating that fine-scale tree-ring derived AGB captures short-term fluctuations in biomass accumulation and photosynthetic activity. The findings highlight the value of integrating ground-based AGB estimates with remote sensing data to monitor forest productivity. This combined approach provides a practical and scalable framework for assessing site-specific forest performance and supports data-driven decision-making for carbon monitoring, climate change adaptation, and sustainable forest management in the Eastern Himalaya.

东喜马拉雅地区的森林在固碳方面发挥着关键作用；然而，长期数据的局限性限制了对地上生物量（AGB）和森林生产力的长期综合评估。为了解决这一空白，我们使用树木年轮作为代理数据，分析了印度东锡金Fambonglho野生动物保护区3个日本柳杉林样地近40年的基础面积增量（BAI）和AGB，使用了45棵树的90个树芯样本。结果显示，随着时间的推移，BAI和AGB具有共同的位点特异性变异性，其增长率从位点特异性生长趋势（BAI范围1-54 cm²）变化。1990年至2015年间，林分AGB从15持续增加到19.80 t ha⁻¹ 。春季（3 - 5月）归一化植被指数（NDVI）与AGB呈中度季节性相关，表明植被生长与生物量生产之间存在一定联系。此外，在高频时间尺度上观察到更强且具有统计学意义的相关性，表明精细尺度树木年轮衍生的AGB捕获了生物量积累和光合活性的短期波动。研究结果强调了将地面AGB估计值与遥感数据结合起来监测森林生产力的价值。这种综合方法为评估特定地点的森林绩效提供了一个实用且可扩展的框架，并为东喜马拉雅地区的碳监测、气候变化适应和可持续森林管理提供了数据驱动的决策支持。

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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 : 2025-10-12 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

The underground forest: Tracing forest history in the Erzgebirge through the wood finds from the medieval silver mines of Dippoldiswalde 地下森林：通过从Dippoldiswalde中世纪银矿中发现的木材，追溯Erzgebirge的森林历史

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-10-11 DOI: 10.1016/j.dendro.2025.126429

Grit Neubauer , Ernst van der Maaten , Christiane Hemker , Marieke van der Maaten-Theunissen

The medieval silver rush profoundly impacted the landscape and vegetation of Europe’s mining regions, a phenomenon strikingly illustrated by the exceptionally well-preserved silver mines discovered in Dippoldiswalde (Eastern Erzgebirge/Saxony) in 2009. This study analyses over 2000 wooden finds collected in those mines, including 1183 specimens that help date the mining activities from the second half of the 12th century to the late 13th century, utilising dendrochronological techniques. Our extensive dendro-dataset provides a valuable resource for exploring various aspects, such as landscape and climatic change, the effects of mining on primary forests, and the selective use of wood in mining processes. The timber reveals new insights not only into previously unknown mining technologies but also into the primeval forest and early forest use.

Initially, miners exploited the forest non-selectively. As a result, early timber use provides important insights into the composition of primeval Fagus-Abies forests that once covered the region. By the 12th century, extensive timber use began to emerge, eventually leading to the complete deforestation of large areas in the mining regions of the Erzgebirge in the Middle Ages. This study underscores the valuable potential of dendrochronologically dating all available archaeological wood, rather than just selected samples, for advancing research in the fields of environmental history and medieval mining.

中世纪的淘金热深刻地影响了欧洲矿区的景观和植被，2009年在Dippoldiswalde （Erzgebirge东部/萨克森州）发现的保存异常完好的银矿就是一个很好的例证。这项研究分析了在这些矿山中收集的2000多个木制发现，其中包括1183个样本，这些样本利用树木年代学技术帮助确定了从12世纪下半叶到13世纪晚期的采矿活动。我们广泛的树木数据集为探索景观和气候变化、采矿对原始森林的影响以及采矿过程中木材的选择性使用等各个方面提供了宝贵的资源。这些木材不仅揭示了以前未知的采矿技术，而且还揭示了原始森林和早期森林利用的新见解。最初，矿工们没有选择性地开采森林。因此，早期木材的使用为了解曾经覆盖该地区的原始Fagus-Abies森林的组成提供了重要的见解。到了12世纪，木材的广泛使用开始出现，最终导致了中世纪额尔齐布尔格矿区的大面积森林被完全砍伐。这项研究强调了在推进环境历史和中世纪采矿领域的研究方面，对所有可用的考古木材进行年代学测年的宝贵潜力，而不仅仅是选定的样本。

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引用次数: 0

Large-scale atmospheric circulation controls intra-annual tree-ring oxygen isotope in the lower Yangtze River basin 大尺度大气环流控制长江下游年际树木年轮氧同位素

IF 2.3 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-10-11 DOI: 10.1016/j.dendro.2025.126430

Qingyu Zhao , Chenxi Xu , Wenling An , Yucheng Liu , Zhengtang Guo

In the Asian monsoon region, the oxygen isotope ratios in precipitation (δ¹⁸O_ppt) are widely reported to be influenced by upstream convective activity, but short-term measurements have limited their further application. Tree-ring cellulose δ¹⁸O (δ¹⁸O_cell) is mainly influenced by δ¹⁸O_ppt and local relative humidity, and it has great potential for extending the application of δ¹⁸O_ppt. We present the intra-annual and annual variabilities of δ¹⁸O_cell of Pinus taiwanensis Hayata in the lower Yangtze River basin, China. Intra-annual δ¹⁸O_cell values show typical “V”-shaped patterns with the most depleted values occurring in the centre of each growth ring, similar to the variation of δ¹⁸O_ppt. Using statistical analysis and forward modeling on different timescales, we found that the seasonal tree-ring isotopic cycle was primarily controlled by δ¹⁸O_ppt, which depends on the large-scale atmospheric circulation. Additionally, seasonal δ¹⁸O_cell profiles were significantly linked with upstream processes, such as the tropical monsoon and outgoing longwave radiation (OLR) in the late or post monsoon season, across the upstream area. Local moisture conditions have a limited effect on intra-annual δ¹⁸O_cell. On the annual scale, δ¹⁸O_cell variability was controlled by both local moisture conditions and δ¹⁸O_ppt during the growing season; however, these relationships were unstable during the past 40 years. Due to the diverse primary drivers of δ¹⁸O_cell on different timescales, annual and seasonal δ¹⁸O_cell records of multi-centennial length may enable us to infer long-term variations in different climate signals separately, such as the strength of upstream convective activity, especially in the late or post monsoon season, on the seasonal scale.

在亚洲季风区，降水中的氧同位素比值（δ18Oppt）被广泛报道受到上游对流活动的影响，但短期测量限制了其进一步应用。树木年轮纤维素δ18O （δ18Ocell）主要受δ18Oppt和当地相对湿度的影响，δ18Oppt具有很大的推广应用潜力。研究了长江下游台湾松林δ 18cell的年际和年内变化特征。年际δ18Ocell值呈典型的“V”型分布，在各年轮的中心处δ18Oppt值耗竭最多，与年际δ18Oppt值变化相似。通过统计分析和不同时间尺度的正演模拟，我们发现季节树木年轮同位素循环主要受δ18Oppt控制，而δ18Oppt主要依赖于大尺度大气环流。此外，季节δ18Ocell剖面与上游过程（如热带季风和季风后期的输出长波辐射）有显著的联系。局地水分条件对年内δ 18cell的影响有限。在年尺度上，生长季δ18Ocell变化受当地水分条件和δ18Oppt共同控制；然而，在过去的40年里，这些关系并不稳定。由于δ18Ocell在不同时间尺度上的主要驱动因素不同，多年和季节δ18Ocell记录可以使我们在季节尺度上分别推断不同气候信号的长期变化，如上游对流活动强度，特别是季风后期或季风后的对流活动强度。

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引用次数: 0