Journal of Siberian Federal University. Biology / Structure of Forests and Climatic Response of Trees in “Forest-Steppe” Contact Zone, the Altai Mountains

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Issue
Journal of Siberian Federal University. Biology. 2015 8 (4)
Authors
Bocharov, Anatoly Yu.; Savchuk, Dmitry A.
Contact information
Bocharov, Anatoly Yu.:Institute of Monitoring of Climatic and Ecological Systems SB RAS 10/3 Academichesky prospekt, Tomsk, 634055, Russia; E-mail:
Keywords
age structure; tree ring width; dendroclimatology; Siberian larch; Siberian stone pine; Altai Mountains
Abstract

Age structure of forests and radial increment of conifers were studied in the “ forest–steppe” contact zone: Siberian stone pine–Siberian spruce–Siberian larch forest in the lower belt of Severo-Chuisky Range, Siberian larch–Siberian spruce–Siberian stone pine forest at the forest-steppe boundary and Siberian larch forests in the forest-steppe ecotone in Kuraiskaya steppe (the Altai Mountains). The structure of the coniferous forests is complex with three generations along the transect: the lower forest belt –> forest-steppe boundary –> forest-steppe ecotone. Percentage of larch trees increases from the forest belt to the steppe. The larch tree ring width chronologies are synchronous but different by their amplitudes. In the modern warming period the radial increment of larch limits by precipitation deficit and high air temperature during the vegetation period at the forest-steppe boundary. The generations appearance relates to century and intra-century cycles of the climate warming

Pages
426-440
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/19999

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