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UDK 630.574.4.2
DOI: 10.24411/9999-025A-2019-10024
DENDROCLIMATIC RESEARCH IN THE ALTAI-SAYAN REGION: PEOPLE, RESULTS AND PERSPECTIVES
Vladimir S. Muglan1, Anna V. Taynik1, Valentin V. Barinov1, Orlan Ch. Oidupaa2
1Siberian Federal University, Krasnoyarsk, Russia, 2Tuvan State University, Kyzyl, Russia, [email protected]
В статье обобщены результаты дендрохронологических исследований в Алтае-Саянском регионе. Рассмотрена история становления научных исследований. Проанализированы основные результаты, достигнутые исследователями.
Ключевые слова: палеоклимат, экология, дендрохронология, реконструкция.
The article summarizes the results of dendrochronological studies in the Altai-Sayan region. The history of the formation of scientific research is considered. The main results achieved by the researchers are analyzed.
Keywords: paleoclimate, ecology, dendrochronology, reconstruction.
Currently, dendrochronology means a systematic study of tree rings allows dating past events and assess climate change. Dendrochronology methods are widely used for dating archaeology and history sited, wood processing methods, spatial and temporal forest ecosystems dynamics and reconstructing environmental factors for long intervals with high temporal resolution.
Studying the paleoclimate, we use data of instrumental observations of hydrometeorological posts and stations but for a number of territories their density and length of the observation period are clearly insufficient. Tree rings attract scientist's attention because they allow obtaining reliable information (with a time resolution of a year, vegetation season) about main climatic changes parameters in past.
In the Altai-Sayan region M.A. Dushkin started the dendroclimatic research. He investigated climate change and activity of the Altai glaciers via the annual rings of Siberian larch (Larix sibirica Ldb.) and Siberian pine (Pinus sibirica Du Tour) from the Aktru valley. Then M.F. Adamenko and A.A. Syubaev studied the tree rings of Siberian larch (Larix sibirica Ldb.) growing at the upper boundary of the forest in the Altai Mountains. The 682-year (1300-1982) tree-ring width chronology was constructed for the Kurai, Aigulak, North-Chui, Sumultinsky and Korgon ranges. It was the base by the June-July temperature reconstruction according to the weather stations Aktru and Ak-Kem. O.Ch. Oydupaa et al. (2004) built four tree-ring width chronologies of Siberian larch (Larix sibirica Ldb.) and reconstruct the temperatures of June-July over the past 300 years.
In the last decade creation of millennials tree-ring series occurred a breakthrough in the Altai-Sayan region.
For the Republic of Altai was built:
- 1105-year chronology of Aktru of Siberian larch (Larix sibirica Ldb.), samples were taken at the upper tree line of the North Chui and Kurai ranges [1];
- 1896-year-old tree-ring chronology Dzhelo (North-Chuya Range). The material was the living trees and subfossil trunks of Siberian larch (Larix sibirica Ldb.) from the upper tree line (2300 m a.s.l.) of the valley Ge-lo [2,3];
- 1241-year chronology of Aktru-Korumdu-Maashey of Siberian pine (Pinus sibirica Du Tour) from the territory of the North-Chuisky Range [4];
- 1216-year chronology Tara (South Chuya Range) of Siberian larch (Larix sibirica Ldb.) from the upper tree line;
- 1423-year chronology Koksu (Katunsky ridge) of Siberian larch (Larix sibirica Ldb.) from the upper tree line [5].
For the Tyva Republic was built:
- 2367-year chronology Mongun for the western part of the republic; the material for its construction was the living trees and subfossil trunks of Siberian larch (Larix sibirica Ldb.) from the upper tree line (2300 m a.s.l.) from the Mongun-Taiga mountain range. [3];
- 1104-year chronology Tarys for the southeastern part of the Republic (Sangilen Highland); the material for the chronology was living trees and subfossil Siberian larch trunks (Larix sibirica Ldb.) from the upper tree line (2200-2300 m a.s.l.) [6];
- 1452-year chronology Kolchan was built for the central part of the Republic (from 561 to 2012) [7];
- 1394-year chronology Kungur was built for the eastern part of the republic. The chronology reflects the external climatic signal in the studied and adjacent territories and allow reconstructing the changes in early-summer temperature for East Tuva over the past 1212 years [8].
These works let us make a climatic reconstruction of the June - July - August temperatures with a duration of 1907 years [7] on the the Republics of Altai and Tyva. Now it is in open access.
Two chronologies were made of Siberian larch (Larix sibirica Ldb.) for Mongolia We used them to reconstruct temperatures: 1290-year chronology at 2400 m a.s.l. and 1099-year chronology at 2420 m a.s.l. [9]; and 1738-year chronology for the Siberian pine (Pinus sibirica Tour) [10] used to reconstruct the dynamics of wetting of the territory.
Currently, we create long tree-ring chronologies for parameters: density of annual rings, cell structure, isotopic composition and etc. O.V. Sidorova carried out measuring the ratio of isotopes (13C / 12C, 18O / 16O), which let reconstruct the variability of temperature and precipitation over a thousand-year period [11].
Работа выполнена при поддержке грантов РНФ, РФФИ (проект № 19-14-00028, проект РФФИ № 18-45-170001 \18).
This work was supported by grants from the RSF, RFBR (project No. 19-14-00028, project RFBR No. 18-45-170001 \ 18).
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