Dendrochronologia最新文献

{"title":"European larch sapwood: A model for predicting the cambial age and for a more accurate dating","authors":"Lisa Shindo ,&nbsp;Mélanie Saulnier ,&nbsp;Hendrik Raese ,&nbsp;Frédéric Guibal ,&nbsp;Jean-Louis Edouard ,&nbsp;Monika Bolka ,&nbsp;Marco Carrer ,&nbsp;Christophe Corona ,&nbsp;Patrick Gassmann ,&nbsp;Michael Grabner ,&nbsp;Sébastien Guillet ,&nbsp;Kurt Nicolussi ,&nbsp;Paola Nola ,&nbsp;Olivia Pignatelli ,&nbsp;Markus Stoffel","doi":"10.1016/j.dendro.2023.126150","DOIUrl":"10.1016/j.dendro.2023.126150","url":null,"abstract":"<div><p>European larch (<span><em>Larix decidua</em></span><span> Mill.) holds significant importance as a forest tree species throughout the Alps and in certain regions of central Europe. Its extensive use as construction timber has made it a subject of substantial interest in dendroarchaeological studies aimed at understanding the long-term interactions between human societies and forests. Precise dating of felling phases, accurate estimation of the age of harvested wood, and information on the geographical origin of wood play a crucial role when it comes to characterize these interactions. In this study, we compiled a large dataset of </span><em>L. decidua</em> samples from across the European Alps to provide a robust statistical model that predicts the cambial age of <em>L. decidua</em><span> trees based on the number of heartwood<span> rings. By extension, this model can be used to estimate the number of sapwood rings so as to approximate the felling date and to more precise date archaeological larch timber. The model requires almost complete heartwood sequences (&lt;5 missing rings) to achieve accurate estimations. Our results also evidence that the ratio between the number of sapwood and heartwood rings varies across the Alps. At the same time, the indicator developed in this work is not suitable for a determination of wood origin, raising doubts about the effectiveness of attempts aimed at dendroprovenancing </span></span><em>L. decidua</em> based on sapwood.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"83 ","pages":"Article 126150"},"PeriodicalIF":3.0,"publicationDate":"2023-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138529972","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":"The history of fire, human and climate in black pine forests of western Anatolia: The Taurus mountains","authors":"Evrim A. Şahan ,&nbsp;Bedirhan Gürçay ,&nbsp;H. Tuncay Güner","doi":"10.1016/j.dendro.2023.126149","DOIUrl":"https://doi.org/10.1016/j.dendro.2023.126149","url":null,"abstract":"<div><p>The interactions between fire occurrence-human-climate are highly complex to understand and also difficult to predict due to having many sources of variations in fire regimes. However, we can gather information about the effect of human influence on the regional fire regimes where human influence is high, and the history of locations is well-known by conducting retrospective fire history studies in locations. Here, we present the impact of human settlements on fire occurrence by comparing and discussing the previous drought-driven tree-ring-based fire history reconstruction sites in western Anatolia. For this purpose, we collected cross-sections from Miyarcık highland, Antalya, and developed a 519–y long (1503–2021 CE) composite fire chronology using dendrochronological methods. Our study site location is known for the seasonal inhabitants of “<em>Yörüks</em>”, who led a nomadic life in the Taurus Mountains for centuries, and forests were used for livestock grazing. Since the temperatures increase significantly at the beginning of spring in the lower elevations of Antalya, the yörüks move towards the upper highlands with their animals from May to November. We found lower fire frequency and no fire-climate association compared to other sites that experienced drought-driven wildfires, even though this site is located in a high-fire-risk region. Low-frequency fires might be due to moderate-level livestock grazing by yörüks in this area. Grazing contributes to reducing the amount of accumulated combustible materials, causes discontinuity of fuel in the understory of forests, and affects the dynamics of the spatial distribution of wildfires. This study showed that moderate-level grazing might support effective fire management activities as fuel management because of modifying the fuel properties, changing the fuel-fire interaction (e.g., the fuel continuity and amount of accumulated fuel), and reducing the wildfire probability over space and time.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"82 ","pages":"Article 126149"},"PeriodicalIF":3.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1125786523000991/pdfft?md5=1c54a86c8d2d9c0d4395c0195a660752&pid=1-s2.0-S1125786523000991-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91992162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparing stem growth of strip-bark and whole-bark growth morphologies in a subarctic conifer (Pinus banksiana), Yellowknife, Northwest Territories","authors":"Michael F.J. Pisaric ,&nbsp;Emily R. Ham ,&nbsp;Jessica I. Zugic ,&nbsp;Jean-Philippe Martin","doi":"10.1016/j.dendro.2023.126148","DOIUrl":"https://doi.org/10.1016/j.dendro.2023.126148","url":null,"abstract":"<div><p>Generally, organisms living near the periphery of their range experience increased environmental stress compared to individuals of the same species growing at the core of their geographic distribution. The greater environmental stress at the ecological limits of a species distribution normally leads to greater sensitivity to growth-limiting factors. For some tree species, this can lead to the development of unique growth morphologies such as strip-bark or partial cambial dieback. Previous studies have concluded that the growth differences induced by CO₂ fertilization effects in high elevation strip-bark trees makes them unsuitable for climate reconstructions. However, comparisons of strip-bark and whole-bark growth morphologies at high latitude and low elevation sites are limited. This study compares the growth of strip-bark and whole-bark jack pine (<em>Pinus banksiana</em> Lamb.) trees near Yellowknife, Canada. Annual ring widths from trees of each morphological type were measured, and the results indicate the growth of the two populations are statistically different from one another prior to the late 19th century. After the late 19th century, growth of the two populations remains statistically different, but the average mean growth of strip-bark trees increases 44% after 1891 while average mean growth of whole-bark trees decreases nearly 11%. Climate sensitivity of the two populations was tested using monthly and seasonal climate indices from 1943 to 2015 and results indicate the two populations share similar responses to climate. The results of this research suggest these strip-bark and whole-bark trees share similar climate-growth relations at inter-annual timescales, however, their growth trends diverge at decadal to centennial timescales. The timing of cambial dieback was dated to a short time interval in the early 19th century which coincided with a period of cool summer temperatures across the northern hemisphere. Increased growth in strip-bark trees after ∼1891 could be related to CO₂ fertilization effects, although further studies into intrinsic water use efficiency would be helpful in assessing this possibility more accurately.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"82 ","pages":"Article 126148"},"PeriodicalIF":3.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S112578652300098X/pdfft?md5=7792d28f4dba9f75b7cc2310330f9b12&pid=1-s2.0-S112578652300098X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91959179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing earlywood-latewood proportion influence on tree-ring stable isotopes","authors":"M.C.A. Torbenson ,&nbsp;U. Büntgen ,&nbsp;P. Römer ,&nbsp;O. Urban ,&nbsp;M. Trnka ,&nbsp;A. Ač ,&nbsp;F. Reinig ,&nbsp;M. Rybníček ,&nbsp;T. Kolář ,&nbsp;T. Arosio ,&nbsp;E. Martinez del Castillo ,&nbsp;E. Koňasová ,&nbsp;N. Pernicová ,&nbsp;J. Čáslavský ,&nbsp;J. Esper","doi":"10.1016/j.dendro.2023.126147","DOIUrl":"https://doi.org/10.1016/j.dendro.2023.126147","url":null,"abstract":"<div><p>Tree-ring stable isotopes are typically measured in latewood cellulose to mitigate potential carry-over effects from previous year storage pools. The isotopic composition of individual tree-ring segments is thought to include considerable intra-annual variability. This sampling strategy may be complicated by steep intra-annual isotope gradients that can rival the inter-annual variability, however. Consistent sampling of latewood material may not always be possible due to low sample availability or high prevalence of narrow rings or low amounts of latewood because of species-specific changes in ring width. Therefore, years that contain samples with higher portions of non-latewood (earlywood) material may influence the final chronology of isotopic variability. Here, we analyze the potential influence that changing earlywood and latewood components of individual tree rings can have on stable carbon and oxygen records from <em>Quercus</em> spp. and <em>Pinus heldreichii</em> chronologies. Analysis of stable isotopes in oak tree rings with varying amounts of latewood show no statistically significant differences in the range of isotopic composition, nor any major differences when considering the same calendric year. Similar results were found for the pine data, when comparing stable isotope measurements with earlywood-to-latewood ratio and maximum density. We argue that this simple approach should be applied to any long-term tree-ring stable isotope record in order to provide a better understanding of the potential biases that could arise from previously recorded intra-annual variability in the wood.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"82 ","pages":"Article 126147"},"PeriodicalIF":3.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91959180","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":"Topoclimatic modulation of growth and production of intra-annual density fluctuations in Juniperus thurifera","authors":"J. Julio Camarero,&nbsp;Antonio Gazol,&nbsp;Cristina Valeriano,&nbsp;Manuel Pizarro,&nbsp;Ester González de Andrés","doi":"10.1016/j.dendro.2023.126145","DOIUrl":"https://doi.org/10.1016/j.dendro.2023.126145","url":null,"abstract":"<div><p>Forest growth is driven by climate variability at continental to regional scales, but other factors play major roles at local scales (0.1–1 ha). Topography impacts on tree growth responses to climate stressors, including drought, by modifying radiation, evapotranspiration rates and the access to soil moisture. However, there is a lack of studies investigating how topographical factors (elevation, aspect, slope) affect climate-growth relationships considering both continuous (tree-ring width) and discrete wood-anatomical features (e.g., intra-annual density fluctuations–IADFs). Here, we investigated how topography modulated the influences of climate and drought on semi-arid <em>Juniperus thurifera</em> forests from north-eastern Spain. We compared two stands located in valley bottoms and two stands located in steep slopes. Radial growth was measured using dendrochronology which also allowed quantifying latewood IADFs. A proxy of topographic influence (incident radiation) was calculated. In addition, the Vaganov-Shashkin (VS) model was used to infer the main climatic constraints of growth at intra-annual scales. We found that junipers growing in valley bottoms were taller and produced more IADFs than junipers growing in steep slopes, but responded less to precipitation variability. This was confirmed by the VS model which showed that low soil moisture in June limited growth, particularly in steep-slope sites and during dry periods. Wet-cool late-summer conditions induced the formation of IADFs. The topoclimatic modulation of growth was explained by the interaction between incident radiation and tree age. Furthermore, climate-growth associations are changing as temperatures rise. Drought impacts on growth are strengthening, but less responsive junipers growing in valley bottoms may be buffered against intensified aridification.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"82 ","pages":"Article 126145"},"PeriodicalIF":3.0,"publicationDate":"2023-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1125786523000954/pdfft?md5=72b57fc7d60ac8e2dd805a4b6bb64885&pid=1-s2.0-S1125786523000954-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92033265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Daily and seasonal patterns of stem diameter micro-variations in three semiarid forest species in relation to water status and environmental factors","authors":"Mei-Jun Liu ,&nbsp;Qiu-Wen Chen ,&nbsp;Hai-Ning Guo ,&nbsp;Jinlin Lyu ,&nbsp;Guoqing Li ,&nbsp;Sheng Du","doi":"10.1016/j.dendro.2023.126146","DOIUrl":"https://doi.org/10.1016/j.dendro.2023.126146","url":null,"abstract":"<div><p><span><span>Understanding the relationship between stem diameter micro-variation (SDMV) and stem water status and revealing the mechanism regulating stem water are essential for elucidating environmental adaptation and water use strategies in forest trees. Here, we report the results of the year-round monitoring (November 2018–October 2019) of SDMV and xylem sap flow obtained using high-resolution </span>dendrometers<span> and Granier-type thermal dissipation probes, respectively, in mature trees of three species in the semiarid Loess Plateau region: </span></span><span><em>Quercus</em><em> liaotungensis</em></span>, <span><em>Platycladus orientalis</em></span>, and <span><em>Robinia pseudoacacia</em></span><span>. The year-round trend for the variations in stem diameter can be divided into phases of a decreasing period and a relatively stable period in the non-growing season, and a progressive rise and fluctuating plateau throughout the growing season. The observed interspecific differences in the time to full recovery from the water deficit state corresponded to species phenology<span> and soil moisture conditions. These differences were manifested as the responses of sap flux density (</span></span><em>F</em>_<em>d</em><span>) and tree water deficit (TWD) to variations in soil water content during the growing season. </span><em>Q. liaotungensis</em><span> implements stomatal regulation early to avoid drastic water loss in the trunk, </span><em>P. orientalis</em> maintains a relatively stable <em>F</em>_<em>d</em> at the expense of increased TWD under soil drought, and <em>R. pseudoacacia</em><span><span> maintains relatively low stomatal conductance under soil drought with an increase in TWD. The results revealed that SDMV is determined by the stem water status and species-specific strategies for water use, which could provide beneficial information for forestation practices in </span>semiarid regions.</span></p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"82 ","pages":"Article 126146"},"PeriodicalIF":3.0,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91959181","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":"Contrasting impacts of climate warming on Himalayan Hemlock growth: Seasonal and elevational variations","authors":"Samresh Rai ,&nbsp;Jan Altman ,&nbsp;Martin Kopecký ,&nbsp;Kristina Sohar ,&nbsp;Pavel Fibich ,&nbsp;Vít Pejcha ,&nbsp;Jiří Doležal","doi":"10.1016/j.dendro.2023.126144","DOIUrl":"https://doi.org/10.1016/j.dendro.2023.126144","url":null,"abstract":"<div><p><span>Ongoing climate change can have varying impacts on tree growth within the growing season and across their elevation ranges, with important implications for forest ecosystem functions and services. However, our knowledge of these effects on climate-sensitive Himalayan forests is still limited. Here, we explore the elevational changes in climatic factors driving long-term changes in the radial growth of Himalayan Hemlock (</span><span><em>Tsuga</em><em> dumosa</em></span><span>), including recent responses to unprecedented climate warming in the central Himalayas<span>. We evaluated several growth parameters, including total ring width, earlywood<span> width, adjusted latewood width, and maximum latewood density, in unique &gt; 400-year-old forests along an elevational gradient of 2500–3100 m on the southern slopes of Dhaulagiri, Nepal. Our findings show that changing climatic conditions, characterized by increasing temperatures and variable precipitation patterns, had a more detrimental effect on </span></span></span><em>Tsuga</em> growth at the edge of its elevation range compared to the optimal mid-elevation zone. Specifically, at lower elevations, the combination of spring and preceding autumn warming restricted earlywood growth, while warmer temperatures in late summer stimulated growth at the mid-elevation site by alleviating the cool growth-limiting conditions caused by high monsoonal precipitation. Furthermore, increased spring temperatures enhance latewood density, while summer warming promotes latewood growth at higher elevations. Additionally, we observed that the recent rise in autumn temperatures has begun to impede <em>Tsuga</em> growth across all elevations. In conclusion, our study reveals that the growth of <em>Tsuga</em> trees is influenced by multiple climatic factors that vary within the growing season and across different parts of its elevation range. Recent spring warming has constrained growth in lower elevations, while higher previous autumn temperatures have reduced growth at both higher and lower boundaries of the species' range. These findings contribute to a better understanding of the complex relationship between climate change and tree growth dynamics, particularly in vulnerable Himalayan forests.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"82 ","pages":"Article 126144"},"PeriodicalIF":3.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92033266","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":"Growth analysis highlights the fire-resistance of a ruderal species in the Atlantic Forest","authors":"Rafael P. Albuquerque ,&nbsp;Arno F.N. Brandes ,&nbsp;Leonardo B. Nascimento ,&nbsp;Jerônimo B.B. Sansevero ,&nbsp;Andrea Sánchez-Tapia ,&nbsp;Warlen S. Costa ,&nbsp;Claudia F. Barros","doi":"10.1016/j.dendro.2023.126143","DOIUrl":"https://doi.org/10.1016/j.dendro.2023.126143","url":null,"abstract":"<div><p>Fire-resistant species may have an essential ecological role in the natural regeneration process of degraded landscapes. <em>Moquiniastrum polymorphum</em> is a ruderal and fire-resistant species that occupies fire-disturbed areas in Brazilian Atlantic Forest. Evaluating a species’ growth sensitivity to fire and climate can help understand its complex successional process. In the present study, we used dendrochronology to describe the radial growth trajectories of <em>M. polymorphum</em> in a fire-disturbed area in the Atlantic Forest (Poço das Anta Biological Reserve), detect post-fire effects on the species’ growth, and investigate climate-growth relationships. We described the long-term growth trend of the species, it increased in the first years and was constant in the following years. The chronology was positively correlated with precipitation and negatively correlated with temperature at the end of the rainy season. Our results reveal that <em>M. polymorphum</em> did not reduce its growth after fire events. When observing through an epoch perspective, fire can even be positive to the species growth. These growth results indicated species fire resistance, which likely provides a resilient tree cover after forest fires and allows disturbed Atlantic Forest environments to break grass-fire cycles. This resistance may have a direct relationship with the opportunistic characteristic of the species in fire-prone areas in the Atlantic Forest. However, we highlight the critical role this species plays in the natural regeneration of burned sites in the Atlantic Forest.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"82 ","pages":"Article 126143"},"PeriodicalIF":3.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49759097","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":"Spatial and temporal variation of Fagus sylvatica growth in marginal areas under progressive climate change","authors":"Nina Škrk Dolar ,&nbsp;Edurne Martinez del Castillo ,&nbsp;Roberto Serrano-Notivoli ,&nbsp;Martín de Luis Arrillaga ,&nbsp;Klemen Novak ,&nbsp;Maks Merela ,&nbsp;Katarina Čufar","doi":"10.1016/j.dendro.2023.126135","DOIUrl":"https://doi.org/10.1016/j.dendro.2023.126135","url":null,"abstract":"<div><p>The escalating decline in growth trends of European beech (<em>Fagus sylvatica</em>) observed across its distribution area pose a major ecological and economic challenge for countries with a high proportion of beech, such as Slovenia. In this study, the effects of climate change were examined at a high-resolution scale, encompassing the large climatic, orographic, and ecological variability of beech forests in Slovenia. Using basal area increment data (BAI) from a tree-ring network (48 sites in Slovenia), modelled climate data, and generalized linear mixed models (GLMM), we found an average growth decline of 11% between the 1953–1985 and 1986–2018 subperiods, affecting 90.5% of the forest stands. Based on climate data, we defined two contrasted marginal areas of beech presence (warm and cold) and analysed the growth changes over time. The warm marginal areas, which predominate near the geographical margin of beech distribution with a sub-Mediterranean climatic regime, were most affected by growth decline, threatening the survival of beech populations in the area. In contrast, cold marginal areas, mainly at high elevations in the Alps, where beech growth had previously been limited by low temperatures, turned out to be the only ones where growth of beech increased under prevailing warming conditions. Consequently, high elevation regions harbour climatic potential for increased beech growth performance, and may represent areas of future expansion of the species.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"81 ","pages":"Article 126135"},"PeriodicalIF":3.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49751614","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":"Inter-tree correlation and climatic response of tree-ring δ18O in Chinese fir: Implications for cross-dating and climatic reconstruction in Central East China","authors":"Yesi Zhao ,&nbsp;Bao Yang ,&nbsp;Peng Zhang ,&nbsp;Jiayan Luo ,&nbsp;Jussi Grießinger ,&nbsp;Hongyan Zhang ,&nbsp;Chenghong Liang ,&nbsp;Zaiqin Ma ,&nbsp;Hongliang Gu ,&nbsp;Yizhong Zhang","doi":"10.1016/j.dendro.2023.126134","DOIUrl":"https://doi.org/10.1016/j.dendro.2023.126134","url":null,"abstract":"<div><p>The availability of both ancient and modern wood samples enables the Chinese fir (<span><em>Cunninghamia lanceolata</em></span><span>) in Central East China to become a potential tree species for dendroclimatic reconstruction over the Common Era. However, the potential of using tree-ring α-cellulose oxygen isotope ratios (δ</span>¹⁸O_TRC) in Chinese fir for the purposes of cross-dating and climatic reconstruction remains unexplored. Here we presented three δ¹⁸O_TRC chronologies (1954–2006 CE) for the whole-ring (δ¹⁸O_WR<span>), earlywood (δ</span>¹⁸O_EW<span>), and latewood (δ</span>¹⁸O_LW) in Chinese fir. The results indicated that the δ¹⁸O_WR had the highest correlation among individual trees. Using the δ¹⁸O_WR instead of the conventionally employed TRW can facilitate the cross-dating procedure. The δ¹⁸O_WR, δ¹⁸O_EW, and δ¹⁸O_LW exhibited the strongest relationships with the hydroclimate variables during the entire (June–September), early (June–July), and late (August–September) summer, respectively. The climate conditions preceding the growing season had a stronger influence on δ¹⁸O_EW than δ¹⁸O_LW. Using the δ¹⁸O_WR and δ¹⁸O_EW to reconstruct the hydroclimate variations may result in greater bias than the use of δ¹⁸O_LW. Our study demonstrated that the δ¹⁸O_TRC in Chinese fir from Central East China has the potential for cross-dating and summer hydroclimate reconstruction.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"81 ","pages":"Article 126134"},"PeriodicalIF":3.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49751617","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}