Ecology of Siberian stone pine (Pinus sibirica Du Tour) and Siberian larch (Larix sibirica Ledeb.) in the Altai mountain glacial basins

Timoshok, E. E.; Timoshok, Eugeny N.; Skorokhodov, Sergey N.

doi:10.1134/s1067413614030138

Cited by 14 publications

(7 citation statements)

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“…The distribution of vegetation differs based on elevation and slope aspect, with coniferous forests dominating the north-facing slopes, and steppe and hemiboreal forests prevalent on south-facing slopes, called 'expositional forest-steppe' (Sedel'nikov 1979, Wilmking et al 2004, Dulamsuren et al 2005b, Kulagin et al 2006, Chytry et al 2008, Kharuk et al 2009, 2010a, 2010b, Timoshok et al 2014. Species composition differs among the different sub-regions within the Altay-Sayan Mountains.…”

Section: Methodsmentioning

confidence: 99%

3D simulation of boreal forests: structure and dynamics in complex terrain and in a changing climate

Brazhnik

Shugart

2015

Environ. Res. Lett.

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To understand how the Siberian boreal forests may respond to near-future climate change, we employed a modeling approach and examined thresholds for significant and irreversible changes in forest structure and composition that are likely to be reached by mid-21st century. We applied the new spatially-explicit gap-dynamics model SIBBORK toward the understanding of how transition zones, namely treelines, which are notoriously undersampled and difficult to model, may change in the near future. We found that a 2°C change in annual average air temperature significantly altered the structure, composition, and productivity of boreal forests stands both in the northern and the southern treeline ecotones. Treeline migration occurs at smaller temperature changes. Based on the current (1990-2014) observed warming trends, a 2°C increase in annual average temperature compared to historical climate ) is likely to be experienced at the northern treeline by 2040 and at the southern treeline by 2050. With regards to the forest biome, the most significant warming to date has been predicted and observed in Siberia. A 2°C increase in annual average temperature compared to the second half of the 19th century is smaller than the predictions of even the most conservative RCP2.6 climate change scenario (IPCC 2013), and has previously been assumed to not likely result in dramatic changes to ecosystems or biome shifts. We show that at a +2°C change, biome shifts from forest to steppe are likely to occur across a large area in southern Siberia. These changes in land cover will inevitably result in changes in the biodiversity, carbon storage, and the ecosystem services provided by the boreal forests of southern Siberia.

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Section: Methodsmentioning

confidence: 99%

3D simulation of boreal forests: structure and dynamics in complex terrain and in a changing climate

Brazhnik

Shugart

2015

Environ. Res. Lett.

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“…As regards the factor of active soil richness, the differences are even less significant. All habitats for these most important environmental factors are in the optimum range of the P. sibirica, indicated earlier for this species in the Aktru River basin (Timoshok et al, 2014) as 67-71 grades on moisture supply and 7.0-8.5 grades on the active soil richness. On the whole, the ranges of the variability of these indicators in P. sibirica forests, autochthonously formed on the moraine cover of the glacier of Akkem stage, are small, which is apparently due to the similarity of the parent rock with the predominance of sericite-chlorite shales, and the temperature regime of the habitats.…”

Section: Resultsmentioning

confidence: 63%

Ecological and cenotic features of the old-growth Pinus sibirica forests in the North-Chuya glaciation center, Russian Altai

Timoshok¹,

Timoshok²,

Gureyeva³

2020

Ukr J Ecol

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Ecological and cenotic features of the old-growth forests of Siberian pine – Pinus sibirica Du Tour situated in the mountain-glacial basin Aktru in the North-Chuya glaciation center of the Russian Altai at the altitudes of 2160–2300 m a.s.l. were examined for the first time. These forests can be defined as virgin ones since they have never been subjected by direct human-caused disturbances throughout their existence. This makes them a valuable pattern of the undisturbed forests of the Altai. The age of the primary generation of P. sibirica forming the base of the tree layer of these forests is about 400 years; the age of some trees reaches 600 years and more. A significant floristic diversity (104 species of vascular plants) was detected in these forests. In the Aktru mountain-glacial basin, old-growth forests of P. sibirica exist in eight variants, significantly differing in the composition and structure of subordinate layers and the diversity of vascular plants, mosses, and ground lichens. We have carried out the phytoindication of the most important ecological factors at the old-growth P. sibirica forests situated on the northern, western, and eastern slopes of the valley of the Aktru River. Despite the fact, these forests are found on different types of soils (coarse-humus gleyed cryozems in the northern slope, typical soddy-podburs on the eastern one, and skeletal coarse-stony weak podburs in the western slope), all habitats are characterized by narrow ranges of moisture conditions – four grades (67.1 to 70.0) indicated series of humid-forest habitats and active soil richness – two grades (7.0 to 8.1) indicated series of mesotrophic habitats. Such environmental conditions are optimal for P. sibirica in all studied habitats. Both the great scientific significance of the examined old-growth P. sibirica forests for climatic and environmental studies and the need for their conservation, due to their rarity, undisturbed state, and significant age of the trees, are noted.

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“…Some studies have been carried out on the dendrochronology of the Pinus sibirica in Western Siberia, Western Sayan Mountains of Russia and Northern Mongolia (D'Arrigo et al, 2001;Jacoby et al, 1996;Pederson et al, 2014;Timoshok et al, 2014). Various studies have been conducted on the past on Pinus sibirica at Russian Altai (NADEF, 2016;Taynik et al, 2016) and mixed conifers in Chinese Altay (Chen et al, 2012a(Chen et al, , 2014 where Larix sibirica showed the same negative relationship to the July temperatures and positive correlation to the current year late winter.…”

Section: Response Function Analysismentioning

confidence: 99%

The Siberian pine growth dynamics in Altai Mountains, China

et al. 2023

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Climatic factors play an essential role in the growth of tree ring width. In this study, we aimed to evaluate the correlation between climatic variables and tree-ring growth characteristics of Pinus sibirica in Altai mountains, northwestern China. This study being is first of its kind on climate growth analysis of Pinus sibirica in northwestern China. The study showed great potential to understand the species growing under the specific climatic conditions. Total of 70 tree cores collected from three sites in the sampling area, out of which 63 tree cores considered for this study. The effect of climatic variables which was studied include precipitation, temperature and PDSI. Our results showed that Tree Ring Width chronology has a significantly positive correlation with the late winter (March) temperature and significant negative correlation with the July temperatures. A significant correlation was observed with the late summer precipitation whereas no significant relation found with the Palmer Drought Severity Index. These significant correlations with temperature and precipitation suggested that this tree species had the potential for the reconstruction of the past climate in the area.

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Ecology of Siberian stone pine (Pinus sibirica Du Tour) and Siberian larch (Larix sibirica Ledeb.) in the Altai mountain glacial basins

Cited by 14 publications

References 1 publication

3D simulation of boreal forests: structure and dynamics in complex terrain and in a changing climate

3D simulation of boreal forests: structure and dynamics in complex terrain and in a changing climate

Ecological and cenotic features of the old-growth Pinus sibirica forests in the North-Chuya glaciation center, Russian Altai

The Siberian pine growth dynamics in Altai Mountains, China

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