Dendrochronologia最新文献

{"title":"TRACE 2024 special issue overview","authors":"Ana-Maria Hereş, Ion Catalin Petritan","doi":"10.1016/j.dendro.2026.126544","DOIUrl":"10.1016/j.dendro.2026.126544","url":null,"abstract":"","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"98 ","pages":"Article 126544"},"PeriodicalIF":3.2,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148635195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impacts of persistent underground coal fires on radial growth of Picea schrenkiana on the northern slope of the Tianshan Mountains","authors":"Tongwen Zhang ,&nbsp;Dong Guo ,&nbsp;Jinghui Song ,&nbsp;Shulong Yu ,&nbsp;Shengxia Jiang ,&nbsp;Kailong Guo ,&nbsp;Tianhao Hou ,&nbsp;Xiaoxia Gou ,&nbsp;Ruxianguli· Abudoureheman ,&nbsp;Huaming Shang ,&nbsp;Yuting Fan","doi":"10.1016/j.dendro.2026.126536","DOIUrl":"10.1016/j.dendro.2026.126536","url":null,"abstract":"<div><div>Using tree-ring width data from <em>Picea schrenkiana</em> samples collected from six cross-sections in the underground coal fire area on the northern slope of the Tianshan Mountains, we established a tree-ring width chronology and analyzed the mechanisms by which underground coal fires affect tree radial growth by integrating climatic factors, soil temperature, and NDVI data. The results indicate that tree mortality across the six cross-sections predominantly occurred around 2018–2019, with mortality rates higher in the top sections than in the lateral sections, and higher in cross-section A than in cross-section B within the top sections. In the northeastern part of cross-section A, the underground coal fire spread at an annual rate of 4.36 m from 2014 to 2021, with the fastest spread occurring in 2018, reaching approximately 17.2 m. Since the 1990s, the missing-ring rate has generally increased, peaking in 2020, and living trees showed higher missing-ring rates than dead trees, except in sections A and E. The climatic response of the BYH site was similar to that of the lower-altitude site (BYG2), showing significant negative correlations with May temperature and significant positive correlations with February and April–May precipitation; additionally, the BYH chronology exhibited significant negative correlations with June temperature and precipitation. The Mann-Whitney U test revealed that the responses to temperature and precipitation in most months differed significantly (p &lt; 0.05) between the BYH and BYG2 chronologies. Analysis of NDVI data over the past 18 years indicated a sustained effect of underground coal fires on tree growth, with the recovery of tree growth in the top section showing a negative correlation with distance from the fire zone (p &lt; 0.1), closely linked to the upward heat transfer that led to pronounced soil warming. Living trees exhibited negative correlations with soil temperature (stronger in the 2000s), while dead trees showed positive correlations (stronger in the 2010s); the latter reflects a disruption of normal growth-climate feedback under long-term thermal stress. In addition to thermal stress, insect infestations (in sections C and D) acted as compounding factors accelerating tree decline, while the spatial distribution of combustion channels, geological interlayer, and individual tree differences collectively contributed to the spatial heterogeneity of mortality patterns. This study reveals the spatial heterogeneity of forest tree growth under the influence of underground coal fires and its complex relationships with climatic and soil environmental factors, providing dendroecological empirical evidence for a deeper understanding of the ecological impacts of underground coal fires.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"97 ","pages":"Article 126536"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147991046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AgeBandDecomposition: An R package to standardize tree rings for age effects","authors":"Gianluigi Mazza ,&nbsp;Nicola Puletti ,&nbsp;Dimitrios Sarris","doi":"10.1016/j.dendro.2026.126531","DOIUrl":"10.1016/j.dendro.2026.126531","url":null,"abstract":"<div><div>We provide a new R package (AgeBandDecomposition) that standardizes tree-ring widths for age effects based on the Age Band Decomposition (ABD) method; useful in dendroecology, dendroclimatology and the broader field of dendroscience. The Age Band Decomposition (ABD) method is a standardization technique that removes the effect of “age trend” from a set of tree-ring series, while preserving both low- and high-frequency variability in the average site-, stand-, or species-specific tree-ring chronology, i.e., the climatically and/or ecologically relevant signals. Thus, it can enhance the reliability in assessing the growth patterns and dynamics of tree species under the influence of past climatic or other environmental factors that drive tree growth. The functionality and usage of AgeBandDecomposition R package are illustrated using a simple example. We provide scripts to help users become familiar with the package’s capabilities and documentation that ensure statistical robustness and reliability. In dendroscience, a key concern is the complex interplay between climate and site conditions and how this interaction influences tree growth. Specifically, in dendroclimatology, early-stage growth competition within the tree stand is less likely to contain reliable climatic signals. The option to excluding such initial years or decades of growth (i.e. the first “age bands” of the ABD method) is provided to minimize error. Thresholds have also been set to ensure an adequate replication of trees per “age band”. Users are encouraged to test ABD alongside other standardization methods (e.g., the Regional Curve Standardization method – RCS, or the C-method) to enhance the analysis of tree growth variability and its underlying drivers. The source code is available in the Comprehensive R Archive Network (CRAN) and on GitLab.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"97 ","pages":"Article 126531"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147945235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the past through dendrochronology: Late Roman architecture in İstanbul","authors":"Ünal Akkemik ,&nbsp;Rahmi Asal ,&nbsp;Anna Elzanowska ,&nbsp;Mehmet Ali Polat ,&nbsp;Sırrı Çölmekçi ,&nbsp;Tomasz Ważny","doi":"10.1016/j.dendro.2026.126540","DOIUrl":"10.1016/j.dendro.2026.126540","url":null,"abstract":"<div><div>Excavations around the main train station at Haydarpaşa in the Kadıköy district on the Asian side of İstanbul uncovered a T-shaped structure previously attributed to the Roman period. Dendrochronological analysis of six oak (<em>Quercus</em> sect. <em>Quercus</em>) beams from the structure revealed a surprisingly early construction date of 369CE, much earlier than previously assumed. Short tree-ring series were successfully integrated to build a robust chronology and were cross-dated against the established Yenikapı oak master chronology. These findings not only provide the first firm evidence for a Late Roman building in this part of İstanbul but also strengthen the Late Roman and Early Byzantine dendrochronological framework for Türkiye. A mean chronology constructed for Haydarpaşa, termed HYP, was used to date another set of samples from the excavation area in Aksaray, on the European side of İstanbul. There, wooden samples collected from the basement of a structure were dated to 340CE, and another mean chronology, named SMI24, was developed for this site. The results of this study highlight the potential of integrating archaeological excavations and dendrochronology as a powerful approach to uncovering previously unrecognized aspects of early urban history.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"97 ","pages":"Article 126540"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147991183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of canopy disturbances on climate sensitivity of old-growth beech (Fagus sylvatica L.) forests","authors":"Antonia Kölzer ,&nbsp;Davide Frigo ,&nbsp;Edurne Martinez del Castillo ,&nbsp;Frederick Reinig ,&nbsp;Jan Esper ,&nbsp;Ingo Heinrich ,&nbsp;Burkhard Neuwirth ,&nbsp;Michele Baliva ,&nbsp;Gianluca Piovesan ,&nbsp;Emanuele Ziaco","doi":"10.1016/j.dendro.2026.126537","DOIUrl":"10.1016/j.dendro.2026.126537","url":null,"abstract":"<div><div>Canopy disturbances can affect tree growth and mask climate signals in tree rings. Their magnitude and lasting effects, however, remain poorly understood, potentially obscuring dendroclimatic analyses in closed-canopy forests. Here, we evaluate the influence of canopy disturbances on the climate sensitivity in European beech (<em>Fagus sylvatica</em> L<em>.)</em> in three old-growth forests spanning a wide range of ecoclimatic conditions. Growth-release detection was used to identify disturbed and undisturbed trees and assess their sensitivity to maximum temperature, precipitation, vapor-pressure deficit, diurnal temperature range, and cloud cover over two periods (1902–2022, 1962–2022). Our results indicate that, across all sites, growth was primarily driven by moisture availability and previous-season maximum temperature. While growth releases cause short-term deviations at the individual-tree level, they have limited impact on the strength, timing, and stability of climate–growth relationships. Comparison of sites from northern Germany to southern Italy reveal a north-to-south narrowing of climate-sensitive growth periods and a notable increase in sensitivity during the late 20th century. Despite their short-term influences, our findings show that disturbances in old-growth beech forests act only as secondary modifiers rather than primary drivers of climate-growth relationships and thereby justify dendroclimatic reconstructions without prior disturbance adjustment.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"97 ","pages":"Article 126537"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147991184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Salix polaris growth rings are an unreliable proxy for satellite-derived tundra productivity on Svalbard","authors":"Tom Verstraten ,&nbsp;Harm Bartholomeus ,&nbsp;Rúna Í. Magnússon","doi":"10.1016/j.dendro.2026.126538","DOIUrl":"10.1016/j.dendro.2026.126538","url":null,"abstract":"<div><div>The Arctic is warming nearly four times faster than the global average, with Svalbard among the regions experiencing the most extreme warming. This has likely driven widespread “greening” of the archipelago, yet in-situ data on tundra productivity in Svalbard remain scarce, and satellite-based measurements are challenged by cloud cover and low sun angles. This study assessed whether <em>Salix polaris</em> growth ring width can serve as a proxy for large-scale tundra productivity on Svalbard, quantified using NDVI. The results indicate that <em>S. polaris</em> growth rings are not a reliable indicator, as only two of nine sites returned a significant (p &lt; 0.05) ring width-NDVI relationship, associations across sites were very weak (R² &lt; 0.05), and predictive performance of ring-width timeseries for local interannual tundra NDVI based on unseen sites was very poor (Nash-Sutcliffe Efficiency &lt; −2). These findings contrast with studies on other <em>Salix</em> species and small-scale biomass changes. <em>S. polaris</em> radial growth increased with summer temperature and thawing degree-days but decreased with freezing degree-days and delayed snowmelt at multiple sites, while other climatic effects were site-specific. NDVI responded more consistently to climate, increasing with summer temperature, thawing degree-days, and summer precipitation, and decreasing with delayed snowmelt and winter precipitation. Differences in how <em>S. polaris</em> radial growth and NDVI respond to climate, along with the influence of abundant non-vascular vegetation on NDVI, likely explain why <em>S. polaris</em> growth rings are mostly unsuitable as a proxy for large-scale tundra productivity in this High Arctic tundra region, as approximated by satellite-derived NDVI.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"97 ","pages":"Article 126538"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147991186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Increased climatic seasonality promotes coupling between NDVI and tree rings in seasonally dry tropical forests","authors":"José Roberto V. Aragão ,&nbsp;Arlete A. Soares ,&nbsp;Claudio S. Lisi ,&nbsp;Peter Groenendijk","doi":"10.1016/j.dendro.2026.126533","DOIUrl":"10.1016/j.dendro.2026.126533","url":null,"abstract":"<div><div>Seasonally dry tropical forests (SDTF) are important providers of ecosystem services and fundamental drivers of the annual cycles of global carbon dynamics. In future scenarios of warmer climate, their productivity may be reduced. Yet, the short time span and small spatial coverage of current monitoring tools severely limits modelling the responses of the productivity of these forests over time and across vegetation gradients. Here, we integrate a spatial vegetation activity index and tree rings to understand how forest productivity varies over time and across an environmental gradient of SDTF types in northeastern Brazil. We used annual Normalized Difference Vegetation Index (NDVI) data and tree ring width chronologies of ten species at five sites within three forest types and explored how interannual variability in canopy greenness and secondary growth correlated with each other, with altitude, and with local (precipitation, temperature) and global (El Niño Southern Oscillation - ENSO) climatic factors. Precipitation was the main determining factor in the variability of NDVI and the width of the rings; NDVI did not show a correlation with altitude, while NDVI mostly showed negative correlations with temperature and ENSO. The relationship between NDVI and ring-width variability varied between species and was mainly significantly positive for dry forest species. This relationship was repeated over time, showing some differences between species that occur in dry forests. Our results reveal a dominant effect of water seasonality on the coupling between vegetation activity and secondary growth in dry forest and suggest that, across the vegetation gradient, dry forests are the most sensitive to water deficit. The integrated use of NDVI and tree rings can enhance the temporal and spatial scales of SDTF monitoring and help improve the predictions of the responses of these ecosystems to climate change. Improved forecasts of the carbon dynamics and the climate-change vulnerability of SDTFs can guide conservation efforts to mitigate climate-change effects in tropical ecosystems.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"97 ","pages":"Article 126533"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147945114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Annual and differentiated growth-ring boundaries in the northern Andes: From dry to humid tropical forests","authors":"Yovanny Duran-Barajas ,&nbsp;Jorge A. Ramírez ,&nbsp;Corina Buendía ,&nbsp;Carlos A. Sierra ,&nbsp;Björn Reu","doi":"10.1016/j.dendro.2026.126532","DOIUrl":"10.1016/j.dendro.2026.126532","url":null,"abstract":"<div><div>Tropical forests play a critical role in global carbon and water cycles, yet long-term tree growth dynamics across different tropical climates remain poorly understood. This is due to scarce and unevenly distributed climate records in tropical regions and high species diversity, challenging studies about forest responses to environmental variability. Dendrochronology allows the reconstruction of tree-growth dynamics in relation to climate; however, its application in the tropics remains underappreciated due to the difficulty of identifying growth-ring boundaries in tropical species, determining whether these are formed annually, and the high species turnover across climate gradients. To address this gap, we describe the wood anatomy of 65 tree species along a tropical climate gradient from dry to humid forest on the Eastern Cordillera of the Colombian Andes and explore their dendrochronological potential, including numerous species not previously described. We find that ∼78% of the species exhibit distinguishable growth-ring boundaries. Ring visibility varies with wood structure, with well-defined boundaries associated with marginal parenchyma bands and vessel size variation, whereas poorly defined rings are linked to fiber structure. Radiocarbon (¹⁴C) dating confirms annual ring formation in several species but also reveals discrepancies in others, likely due to false rings, missing rings, or intra-annual and supra-annual growth variability. Our results confirm the broad dendrochronological potential of tropical tree species and expand the taxonomic and geographic scope of tropical dendrochronology. Exploiting the dendrochronological potential of tropical tree species could provide valuable insights into tropical forest functioning and resilience under future climate change.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"97 ","pages":"Article 126532"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147991187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Duration of wood formation phases in Scots pine and Norway spruce lengthens towards the south in the Nordic countries","authors":"Magdalena Held ,&nbsp;Anna Lintunen ,&nbsp;Tuula Jyske ,&nbsp;Harri Mäkinen","doi":"10.1016/j.dendro.2026.126534","DOIUrl":"10.1016/j.dendro.2026.126534","url":null,"abstract":"<div><div>Environmental conditions such as temperature and light affect the wood formation of trees in complex ways, as cell division and each subsequent phase of wood formation may respond differently. We analyzed the influence of latitude and annual temperature sum on the dynamics of wood formation phases in the boreal conifers <em>Picea abies</em> (L.) Karst. and <em>Pinus sylvestris</em> L. Furthermore, we investigated the relationships of these dynamics with the number of conduits produced in a year. We found that wood formation phases started earlier and ended later at lower latitudes and years with higher temperature sum. However, latitude had a relatively weak explanatory power on the dynamics of the cell enlargement phase (i.e. the phase that starts earliest in the growing season) in <em>P. abies</em>, indicating a higher sensitivity to annually changing conditions like the temperature sum. Although the dynamics of the wood formation phases cannot directly affect the number of conduits produced, as this is determined by the preceding cell division, longer phases were associated with a greater number of conduits. This indicates that both cell division and the duration of the subsequent wood formation phases responded positively to the same conditions. Thus, in <em>P. abies</em> and <em>P. sylvestris</em> growing at latitudes from 60 ° to 67.5 °, warmer conditions, as expected under climate change, will enable a longer wood formation period and all its phases, and a higher wood production, at least until other factors become limiting.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"97 ","pages":"Article 126534"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147945112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"American oak imports to Britain and Ireland in the 18th and early 19th centuries; The dendrochronological evidence","authors":"A. Crone ,&nbsp;A. Arnold ,&nbsp;R. Bale ,&nbsp;M. Bridge ,&nbsp;D. Brown ,&nbsp;E. Cook ,&nbsp;C. Griggs ,&nbsp;R. Howard ,&nbsp;D. Miles ,&nbsp;C. Mills ,&nbsp;N. Nayling ,&nbsp;C. Tyers ,&nbsp;I. Tyers","doi":"10.1016/j.dendro.2026.126526","DOIUrl":"10.1016/j.dendro.2026.126526","url":null,"abstract":"<div><div>Across much of the British Isles it is now relatively straightforward to date native-grown oak and oak imported from Europe. It has therefore been surprising that numbers of long-lived, slow-grown oak timbers from buildings and objects which, based on documentary evidence or architectural style, are thought to be 18th or 19th century in date, have so far proved undateable. This is the period when the British Crown started looking further afield for sources of timber, in particular to the newly established colonies along the east coast of North America. To explore the thesis that North America might be the source of these undated oak sequences, data from 43 assemblages were compared with a suite of regional chronologies from the New England colonies and this exercise has resulted in the dendrochronological dating of 25 assemblages, with probable felling dates spanning the early 18th to mid-19th century. These results are supported in many cases by both radiocarbon dating and documentary evidence. They point to New York state, Massachusetts, New Jersey and Pennsylvania as the sources of much of the timber that was shipped to the British Isles and provide evidence for the nature of the timber cargoes crossing the Atlantic and how and where they were used.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"97 ","pages":"Article 126526"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147798506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}