Detailing the Climatic Response of Wood Anatomical Traits and Xylogenesis Phenology of Scots Pine in the Forest-Steppes of Southern Siberia [Детализация климатического отклика анатомических параметров древесины и фенологии ксилогенеза сосны обыкновенной в лесостепях юга Сибири]

Demina A.V.; Zhirnova D.F.; Belokopytova L.V.; Upadhyay K.K.; Babushkim E.A.

Дополнительные ссылки: Scopus · eLibrary

База данных: Каталог библиотеки СФУ

Библиографическое описание: Detailing the Climatic Response of Wood Anatomical Traits and Xylogenesis Phenology of Scots Pine in the Forest-Steppes of Southern Siberia [Детализация климатического отклика анатомических параметров древесины и фенологии ксилогенеза сосны обыкновенной в лесостепях юга Сибири] / A. V. Demina [и др.]. - Текст : непосредственный // J. Sib. Fed. Univ. - Biol. - 2022. - Vol. 15, Is. 2. - С. 183-201. - Acknowledgements. The reported study was funded by RFBR (project No. 20–016–00049) and the Ministry of Science and Higher Education, RF (FSRZ-2020–0010). - ISSN ISSN- 199, DOI 10.17516/1997-1389-0382.

Аннотация: Semi-arid forests of continental Asia are sensitive to the moisture deficit, and, thus, tree rings in these regions can serve as long-term climatic proxies. At the same time, wood anatomy is promising for detailing the recorded climatic signal and as an indicator of the phenology of xylogenesis. In this study, we compared the sets of chronologies obtained using a new method of indexing for mean and maximum values of the radial cell size, D, and the cell wall thickness, CWT, of Scots pine (Pinus sylvestris L.) from the forest-steppe habitats of Khakassia (southern Central Siberia), and southern Buryatia (Eastern Siberia), where climate is more continental and harsh. During indexing, the nonlinear dependences of D and CWT on cell number in the radial row of the ring, N, were removed to divide the climatic signal into the components recorded during the consecutive stages of xylogenesis. The stability of the N dependence was confirmed for radial growth (linear function, close to direct proportionality, R2>0.93), D, and CWT (negative exponential function with saturation, R2=0.11-0.83). The adaptation of pine wood to the climatic peculiarities of south Buryatia is evident as the smaller tracheid size but thicker cell walls compared with Khakassia. The response of radial growth and indexed cell chronologies to temperature and precipitation is similar in both regions, but in Buryatia the response to temperature is less pronounced (since the summer is cooler) and the main maxima of dendroclimatic correlations are shifted to later periods. It has been suggested that the delay in the onset of pine xylogenesis in Buryatia is rather associated with the dry weather in May-June than with lower temperatures, and during all of the growth season, phenological shifts are maintained by internal mechanisms and spatial differences between provenances. © Siberian Federal University. All rights reserved.

Год издания: 2022

Авторы: Demina A.V. , Zhirnova D.F. , Belokopytova L.V. , Upadhyay K.K. , Babushkim E.A.

Издательство: Siberian Federal University

Источник: Journal of Siberian Federal University - Biology

Выпуск: Vol. 15, Is. 2

Номера страниц: 183-201

Держатель оригинала документа: Khakass Technical Institute, Siberian Federal University, Abakan, Russian Federation, Mizoram University, Aizwal, India

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