Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.3390/f12121765

Ключевые слова: climate-growth relationship, dendroclimatology, larch, soil temperature, tree rings, climate–growth relationship

Аннотация: Dendroclimatology has focused mainly on the tree growth response to atmospheric variables. However, the roots of trees directly sense the underground climate, which can be expected to be no less important to tree growth. Data from two meteorological stations approximately 140 km apart in southern Siberia were applied to characterize the spatiotemporal dynamics of soil temperature and the statistical relationships of soil temperature to the aboveground climate and tree-ring width (TRW) chronologies of Larix sibirica Ledeb. from three forest-steppe stands. Correlation analysis revealed a depth-dependent delay in the maximum correlation of TRW with soil temperature. Temperatures of both the air and soil (depths 20-80 cm) were shown to have strong and temporally stable correlations between stations. The maximum air temperature is inferred to have the most substantial impact during July-September (R = -0.46--0.64) and early winter (R = 0.39-0.52). Tree-ring indices reached a maximum correlation with soil temperature at a depth of 40 cm (R = -0.49--0.59 at 40 cm) during April-August. High correlations are favored by similar soil characteristics at meteorological stations and tree-ring sites. Cluster analysis of climate correlations for individual trees based on the K-means revealed groupings of trees driven by microsite conditions, competition, and age. The results support a possible advantage of soil temperature over air temperature for dendroclimatic analysis of larch growth in semiarid conditions during specific seasons.

Журнал: FORESTS

Выпуск журнала: Vol. 12, Is. 12

Номера страниц: 1765

Место издания: MDPI

Издатель: 2

• Belokopytova Liliana V. (Siberian Fed Univ, Khakass Syst Inst, Abakan 655017, Russia)
• Zhirnova Dina F. (Siberian Fed Univ, Khakass Syst Inst, Abakan 655017, Russia)
• Meko David M. (Univ Arizona, Lab Tree Ring Res, Tucson, AZ 85721 USA)
• Babushkina Elena A. (Siberian Fed Univ, Khakass Syst Inst, Abakan 655017, Russia)
• Vaganov Eugene A. (Siberian Fed Univ, Inst Ecol & Geog, Krasnoyarsk 660036, Russia; Russian Acad Sci, Siberian Branch, Dept Dendroecol, Sukachev Inst Forest, Krasnoyarsk 660036, Russia)
• Krutovsky Konstantin V. (Georg August Univ Gottingen, Dept Forest Genet & Forest Tree Breeding, D-37077 Gottingen, Germany; Georg August Univ Gottingen, Ctr Integrated Breeding Res CiBreed, D-37075 Gottingen, Germany; Russian Acad Sci, NI Vavilov Inst Gen Genet, Lab Populat Genet, Moscow 119333, Russia; Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Lab Forest Genet, Genome Res & Educ Ctr,Dept Genom & Bioinformat, Krasnoyarsk 660036, Russia)

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