J. For. Sci., 2025, 71(10):516-524 | DOI: 10.17221/58/2025-JFS

Himalayan fir growth in central Bhutan reflects variability in temperature and precipitationOriginal Paper

Jiří Lehejček ORCID...1, Gabriel Vávrů1, Sangay Wangchuk ORCID...2, Miroslav Svoboda ORCID...3, Katrien Boonen ORCID...1
1 Faculty of Environment, Jan Evangelista Purkyně University, Ústí nad Labem, Czech Republic
2 Centre for Forest Science and Technology, Ugyen Wangchuck Institute for Forestry Research and Training, Bumthang, Bhutan
3 Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic

Mountain ecosystems, especially those at the highest altitudes, are sensitive to current climate change. Proxy archives may provide an insightful tool to better understand ongoing changes and evaluate future scenarios. Trees have traditionally been used as such archives, as they often respond sensitively to environmental change. Thus, we studied tree-ring records of forest-line species Abies densa Griff. growing in the Eastern Himalayas, central Bhutan, to evaluate the effect of climate on the growth of this species. The annual chronologies were generated using standard dendrochronological methods and then compared with climatic data from the CRU TS database. The results demonstrate a negative effect of summer temperatures on the width of the annual rings, suggesting possible stress caused by higher temperatures during the monsoon season. On the other hand, a positive effect of temperatures on tree growth was observed during late winter months. The response to rainfall was mixed, with a positive effect on growth in November and a negative effect in May and January, suggesting a later onset of the vegetation season. To our knowledge, we present the first dendroclimatological study on this long-lived species in central Bhutan, portraying its potential for future climate and environmental research and applications.

Keywords: Abies densa Griff.; dendrochronology; dendroclimatology; Eastern Himalayas; tree rings

Received: July 25, 2025; Revised: October 15, 2025; Accepted: October 16, 2025; Published: October 30, 2025  Show citation

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Lehejček J, Vávrů G, Wangchuk S, Svoboda M, Boonen K. Himalayan fir growth in central Bhutan reflects variability in temperature and precipitation. J. For. Sci. 2025;71(10):516-524. doi: 10.17221/58/2025-JFS.
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    References

    1. Baillie M.G.L., Pilcher J.R. (1973): A simple crossdating program for tree-ring research. Tree-Ring Bulletin, 33: 7-14.
    2. Bernabei M. (2022): Is a T-test value > 10 really reliable in identifying wood from the same tree trunk? Dendrochronologia, 76: 126025. Go to original source...
    3. Bhattacharyya A., Chaudhary V. (2003): Late-summer temperature reconstruction of the Eastern Himalayan region based on tree-ring data of Abies densa. Arctic, Antarctic, and Alpine Research, 35: 196-202. Go to original source...
    4. Bräuning A., Mantwill B. (2004): Summer temperature and summer monsoon history on the Tibetan plateau during the last 400 years recorded by tree rings. Geophysical Research Letters, 31: L24205. Go to original source...
    5. Bunn A.G. (2008): A dendrochronology program library in R (dplR). Dendrochronologia, 26: 115-124. Go to original source...
    6. Bunn A., Korpela M., Biondi F., Campelo F., Mérian P., Qeadan F., Zang C. (2022): dplR: Dendrochronology Program Library in R (Version 1.7.4). R package. CRAN. Available at: https://CRAN.R-project.org/package=dplR
    7. Christian T. (2021): Abies densa. Trees and Shrubs Online. Available at: https://treesandshrubsonline.org/articles/abies/abies-densa/
    8. Cook E.R., Kairiukstis L.A. (1990): Methods of Dendrochronology: Applications in the Environmental Sciences. Dordrecht, Kluwer Academic Publishers: 394.
    9. Dimri A.P., Kumar D., Choudhary A., Maharana P. (2018): Future changes over the Himalayas: Mean temperature. Global and Planetary Change, 162: 235-251. Go to original source...
    10. Dorji U., Olesen J.E., Bøcher P.K., Seidenkrantz M.S. (2016): Spatial variation of temperature and precipitation in Bhutan and links to vegetation and land cover. Mountain Research and Development, 36: 66-79. Go to original source...
    11. Fan Z.X., Bräuning A., Cao K.F., Zhu S.D. (2009): Growth-climate responses of high-elevation conifers in the central Hengduan Mountains, southwestern China. Forest Ecology and Management, 258: 306-313. Go to original source...
    12. FMID (2023): National Forest Inventory Volume I: State of Forest Report. Thimphu, Forest Monitoring and Information Division: 190. Available at: https://bfl.org.bt/wp-content/uploads/2024/05/National-Forest-Inventory-Volume-I_State-of-Forest-Report-2023.pdf
    13. Gratzer G., Rai P.B., Glatzel G. (1997): Ecology of Abies densa Forests of the IFMP, Ura, Bhutan. Ura, Forest Ecology Unit, IFMP: 239.
    14. Gratzer G., Rai P.B., Glatzel G. (1999): The influence of the bamboo Yushania microphylla on regeneration of Abies densa in central Bhutan. Canadian Journal of Forest Research, 29: 1518-1527. Go to original source...
    15. Guan X., Guo S., Huang J., Shen X., Fu L., Zhang G. (2022): Effect of seasonal snow on the start of growing season of typical vegetation in Northern Hemisphere. Geography and Sustainability, 3: 268-276. Go to original source...
    16. Harris I., Osborn T.J., Jones P., Lister D. (2020): Version 4 of the CRU TS monthly high-resolution gridded multivariate climate dataset. Scientific Data, 7: 109. Go to original source... Go to PubMed...
    17. Holmes R.L. (1983): Computer-assisted quality control in tree-ring dating and measurement. Tree-Ring Bulletin, 43: 69-78.
    18. Huang R., Zhu H., Liang E., Bräuning A., Zhong L., Xu C., Feng X., Asad F., Sigdel S.R., Li L., Grießinger J. (2022): Contribution of winter precipitation to tree growth persists until the late growing season in the Karakoram of northern Pakistan. Journal of Hydrology, 607: 127513. Go to original source...
    19. Ianbaev R., Bakhtina S., Yanbaev Y., Kulagin A., Redkina N., Tagirov V. (2025): A clear climatic signal of precipitation and temperature in growth of Scots pine young trees in habitats homogenous in relief, soil and access to light. Botanical Studies, 66: 23. Go to original source... Go to PubMed...
    20. Khandu Y., Polthanee A., Isarangkool Na Ayutthaya S. (2022): Dendroclimatic reconstruction of mean annual temperatures over treeline regions of Northern Bhutan Himalayas. Forests, 13: 1794. Go to original source...
    21. KNMI (2025): KNMI Climate Explorer. Available at: https://climexp.knmi.nl (accessed Mar 11, 2025)
    22. Luan L., Zhai P.M. (2023): Changes in rainy season precipitation properties over the Qinghai-Tibet Plateau based on multi-source datasets. Climate Change Research, 19: 173-190.
    23. NCHM Bhutan (2025): Information page. National Centre for Hydrology and Meteorology Bhutan. Available at: https://www.nchm.gov.bt/home/pageMenu/801
    24. Posit Team (2024): RStudio: Integrated Development Environment for R (Version 2023.6.0.421). Posit Software, PBC. Available at: https://posit.co/downloads/
    25. R Core Team (2024): R: A Language and Environment for Statistical Computing. Vienna, R Foundation for Statistical Computing. Available at: https://www.R-project.org/
    26. Rai S., Dawadi B., Wang Y., Lu X., Sigdel S.R. (2020): Growth response of Abies spectabilis to climate along an elevation gradient of the Manang valley in the central Himalayas. Journal of Forestry Research, 31: 2245-2254. Go to original source...
    27. Sanjay J., Krishnan R., Ramarao M.V.S., Mahesh R., Singh B., Patel J., Ingle S., Bhaskar P., Revadekar J.V., Sabin T.P., Mujumdar M. (2020): Future climate change projections over the Indian region. Climate Change over INDIA: An Interim Report (2017): 11-27; arXiv preprint, arXiv:2012.10386v1.
    28. Singh R.B., Schickhoff U., Mal S. (2016): Climate Change, Glacier Response, and Vegetation Dynamics in the Himalaya: Contributions Toward Future Earth Initiatives. Cham, Springer: 399. Go to original source...
    29. Sun M., Li J., Cao R., Tian K., Zhang W., Yin D., Zhang Y. (2021): Climate-growth relations of Abies georgei along an altitudinal gradient in Haba Snow Mountain, southwestern China. Forests, 12: 1569. Go to original source...
    30. Tewari V.P., Verma R.K., Von Gadow K. (2017): Climate change effects in the Western Himalayan ecosystems of India: Evidence and strategies. Forest Ecosystems, 4: 13. Go to original source...
    31. Wu G., Liu Y., He B., Bao Q., Duan A., Jin F.F. (2012): Thermal controls on the Asian summer monsoon. Scientific Reports 2, 404. Go to original source... Go to PubMed...
    32. Xu J., Tang Y., Xu J., Shu S., Yu B., Wu J., Huang Y. (2022): Impact of snow cover phenology on the vegetation green-up date on the Tibetan plateau. Remote Sensing, 14: 3909. Go to original source...
    33. Zang C., Biondi F. (2015): treeclim: An R package for the numerical calibration of proxy-climate relationships. Ecography, 38: 431-436. Go to original source...

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