Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

: материалы временных коллективов / V. S. Myglan // Climatic changes and their impact on boreal and temperate forests: Abstracts of the International conference (June 5-7, Ekaterinburg, Russia) : Ural State Forest Engineering University, 2006. - С. 68-69

Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28

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Мыглан, Владимир Станиславович

: материалы временных коллективов / V. S. Myglan // Climate change and their impact on boreal and temperate forests: Abstracts of the International Conference (June 5-7, 2006, Ekaterinburg, Russia). - 2006. - С. 68

Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок, 50, стр., 28

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Мыглан, Владимир Станиславович
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: материалы временных коллективов / V. S. Myglan // Workshop on climate change, the tree growth response, and reconstruction of climate 25-29 January 2006, V.N. Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russia. - Krasnoyarsk : V.N. Sukachev Institute of Forest SB RAS, 2006. - С. 31
Аннотация: This study represents the results of an analysis of long-timescale series of annual observations of the melting and freezing of ice on Siberian rivers (Ob, Irtysh, Enisey, Angara, etc.). The dates of these ice events are related to spring and autumn temperatures. The relation between an indirect indicator of changing summer temperatures, tree-growth indices derived from tree-ring chronologies, and the period of open water is shown.

Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28

Доп.точки доступа:
Мыглан, Владимир Станиславович

/ L. . Hellmann [et al.] // J. Geophys. Res.-Biogeosci. - 2013. - Vol. 118, Is. 1. - P68-76, DOI 10.1002/jgrg.20022. - Cited References: 76. - B. Sittler, B. Frauenberger, C. Lachenmeier, I. Pike, A. Verstege, D. Nievergelt, H. Linderson, and B. Held contributed to field and laboratory work. A. Bast and C. Ginzler provided insight on various mapping techniques. G. King and two anonymous reviewers commented on earlier manuscript versions. This work is supported by the Eva Mayr-Stihl Foundation. . - 9. - ISSN 0148-0227РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: Arctic environments, where surface temperatures increase and sea ice cover and permafrost depth decrease, are very sensitive to even slight climatic variations. Placing recent environmental change of the high-northern latitudes in a long-term context is, however, complicated by too short meteorological observations and too few proxy records. Driftwood may represent a unique cross-disciplinary archive at the interface of marine and terrestrial processes. Here, we introduce 1445 driftwood remains from coastal East Greenland and Svalbard. Macroscopy and microscopy were applied for wood anatomical classification; a multi-species subset was used for detecting fungi; and information on boreal vegetation patterns, circumpolar river systems, and ocean current dynamics was reviewed and evaluated. Four conifer (Pinus, Larix, Picea, and Abies) and three deciduous (Populus, Salix, and Betula) genera were differentiated. Species-specific identification also separated Pinus sylvestris and Pinus sibirica, which account for similar to 40% of all driftwood and predominantly originate from western and central Siberia. Larch and spruce from Siberia or North America represents similar to 26% and similar to 18% of all materials, respectively. Fungal colonization caused different levels of driftwood staining and/or decay. Our results demonstrate the importance of combining wood anatomical knowledge with insight on boreal forest composition for successfully tracing the origin of Arctic driftwood. To ultimately reconstruct spatiotemporal variations in ocean currents, and to better quantify postglacial uplift rates, we recommend consideration of dendrochronologically dated material from many more circumpolar sites. Citation: Hellmann, L., W. Tegel, O. Eggertsson, F. H. Schweingruber, R. Blanchette, A. Kirdyanov, H. Gartner, and U. Buntgen (2013), Tracing the origin of Arctic driftwood, J. Geophys. Res. Biogeosci., 118, 68-76, doi:10.1002/jgrg.20022.

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[Hellmann, Lena
Schweingruber, Fritz Hans
Gaertner, Holger
Buentgen, Ulf] Swiss Fed Res Inst, WSL, CH-8903 Birmensdorf, Switzerland
[Hellmann, Lena
Buentgen, Ulf] Oeschger Ctr Climate Change Res, Bern, Switzerland
[Tegel, Willy] Univ Freiburg, Inst Forest Growth IWW, D-79106 Freiburg, Germany
[Eggertsson, Olafur] Iceland Forest Serv, Reykjavik, Iceland
[Blanchette, Robert] Univ Minnesota, Dept Plant Pathol, St Paul, MN USA
[Kirdyanov, Alexander] VN Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia

Доп.точки доступа:
Hellmann, L...; Tegel, W...; Eggertsson, O...; Schweingruber, F.H.; Blanchette, R...; Kirdyanov, A...; Gartner, H...; Buntgen, U...

/ V. I. Kharuk, M. L. Dvinskaya, K. J. Ranson // Int. J. Wildland Fire. - 2013. - Vol. 22, Is. 2. - P207-211, DOI 10.1071/WF11181. - Cited References: 28. - This research was supported by the SB RAS Program Number 27.33, and NASA Science Mission Directorate, Terrestrial Ecology Program. The authors thank Dr Joanne Howl for editing the manuscript. . - 5. - ISSN 1049-8001РУБ Forestry

Аннотация: A fire history of northern larch forests was studied. These larch forests are found near the northern limit of their range at similar to 71 degrees N, where fires are predominantly caused by lightning strikes rather than human activity. Fire-return intervals (FRIs) were calculated based on fire scars and dates of tree natality. Tree natality was used as an approximation of the date of the last fire. The average FRI was found to be 295 +/- 57 years, which is the longest reported for larch-dominated stands. Prior studies reported 80-90-year FRIs at 64 degrees N and similar to 200 years near the latitude of the Arctic Circle. Comparing data from fires that occurred in 1700-1849 (end of the Little Ice Age, LIA) and 1850-1999 (post-LIA warming) indicates approximately twice as many fires occurred during the latter period. This agrees with the hypothesis that observed climatic warming will result in an increase in fire frequency. Our results also indicate that fires that did not leave visible fire scars on the tree stem may be identified based on the date of growth release revealed from dendrochronology.

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Держатели документа:
[Kharuk, Vyacheslav I.
Dvinskaya, Mariya L.] Siberian Fed Univ, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Ranson, K. Jon] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

Доп.точки доступа:
Kharuk, V.I.; Dvinskaya, M.L.; Ranson, K.J.

[Text] / A. S. Prokushkin [et al.] // Environ. Res. Lett. - 2011. - Vol. 6, Is. 4. - Ст. 45212, DOI 10.1088/1748-9326/6/4/045212. - Cited References: 63. - This work was supported by the joint US-Russia program between the RFBR and CRDF through grants 10-05-92513 and RUG1-2980-KR-10. Additional support was provided by joint Russian-French Programmes EC2CO, Environement Cotier PNEC and GDRI CAR-WET-SIB, ANR 'Arctic metals' and grant 11.G34.31.0014 of Russian Ministry of higher education and science. We greatly thank Sergey Tenishev for assistance with sample collection during harsh winter and spring periods, and Vladimir Ivanov who provided invaluable daily discharge data for the Nizhnyaya Tunguska and Tembenchi Rivers. We thank three anonymous reviewers for their fruitful and constructive comments that allowed improving greatly the quality of presentation. . - 14. - ISSN 1748-9326РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: Frequent measurements of dissolved organic (DOC) and inorganic (DIC) carbon concentrations in rivers during snowmelt, the entire ice-free season, and winter were made in five large watersheds (15 000-174 000 km(2)) of the Central Siberian Plateau (Yenisey River basin). These differ in the degree of continuous permafrost coverage, mean annual air temperature, and the proportion of tundra and forest vegetation. With an annual DOC export from the catchment areas of 2.8-4.7 gC m(-2) as compared to an annual DIC export of 1.0-2.8 gC m(-2), DOC was the dominant component of terrigenous C released to rivers. There was strong temporal variation in the discharge of DOC and DIC. Like for other rivers of the pan-arctic and boreal zones, snowmelt dominated annual fluxes, being 55-71% for water runoff, 64-82% for DOC and 37-41% for DIC. Likewise, DOC and DIC exhibited also a strong spatial variation in C fluxes, with both dissolved C species decreasing from south to north. The rivers of the southern part of the plateau had the largest flow-weighted DOC concentrations among those previously reported for Siberian rivers, but the smallest flow-weighted DIC concentrations. In the study area, DOC and DIC fluxes were negatively correlated with the distribution of continuous permafrost and positively correlated with mean annual air temperature. A synthesis of literature data shows similar trends from west to east, with an eastward decrease of dissolved C concentrations and an increased proportion of DOC in the total dissolved C flux. It appears that there are two contemporary limitations for river export of terrigenous C across Siberia: (1) low productivity of ecosystems with respect to potentially mobilizable organic C, slow weathering rates with concomitant small formation of bicarbonate, and/or wildfire disturbance limit the pools of organic and inorganic C that can be mobilized for transport in rivers (source-limited), and (2) mobilization of available pools of C is constrained by low precipitation in the severe continental climate of interior Siberia (transport-limited). Climate warming may reduce the source limitation by enhancing primary production and weathering rates, while causes leading to surmounting the transport limitation remain debatable due to uncertainties in predictions of precipitation trends and other likely sources of reported increase of river discharges.

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Держатели документа:
[Prokushkin, A. S.
Korets, M. A.
Prokushkin, S. G.] VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Pokrovsky, O. S.
Shirokova, L. S.
Viers, J.] Univ Toulouse 3, CNRS, IRD, LMTG OMP, F-31400 Toulouse, France
[Amon, R. M. W.] Texas A&M Univ, Dept Marine Sci, Galveston, TX 77553 USA
[Guggenberger, G.] Leibniz Univ Hannover, Inst Bodenkunde, D-30419 Hannover, Germany
[McDowell, W. H.] Univ New Hampshire, Dept Nat Resources & Environm, Durham, NH 03824 USA

Доп.точки доступа:
Prokushkin, A.S.; Pokrovsky, O.S.; Shirokova, L.S.; Korets, M.A.; Viers, J...; Prokushkin, S.G.; Amon, RMW; Guggenberger, G...; McDowell, W.H.

[Text] / O. V. Sidorova [et al.] // Glob. Change Biol. - 2010. - Vol. 16, Is. 3. - P1003-1018, DOI 10.1111/j.1365-2486.2009.02008.x. - Cited References: 50. - This work was supported by Swiss National Science Foundation SNF_200021_121838/1, (PIOI2-119259/1), SCOPES program (No. IB73A0-111134), European Science Foundation BASIN-SIBAE (No. 596) and the grants of RFBR No. 09-05-98015-r_Sibir_a, RFBR No. 09-04-00803a, 07-04-00293-a. The authors thank Mary Gagen and Danny McCarroll from Swansea University, England for providing deltaSUP13/SUPC data from Laanila (Finland) and for their useful advises. This work was conducted in collaboration with the EU-funded Millennium project (017008). . - 16. - ISSN 1354-1013РУБ Biodiversity Conservation + Ecology + Environmental Sciences

Аннотация: A spatial description of climatic changes along circumpolar regions is presented based on larch tree-ring width (TRW) index, latewood density (MXD), delta 13C, delta 18O of whole wood and cellulose chronologies from eastern Taimyr (TAY) and north-eastern Yakutia (YAK), Russia, for the period 1900-2006, in comparison with a delta 13C cellulose chronology from Finland (FIN) and a delta 18O ice core record from Greenland (GISP2). Correlation analysis showed a strong positive relationships between TRW, MXD, stable isotope chronologies and June, July air temperatures for TAY and YAK, while the precipitation signal was reflected differently in tree-ring parameters and stable isotope data for the studied sites. Negative correlations were found between July, August precipitation from TAY and stable isotopes and MXD, while May, July precipitations are reflected in MXD and stable isotopes for the YAK. No significant relationships were found between TRW and precipitation for TAY and YAK. The areas of significant correlations between July gridded temperatures and TRW, MXD and stable isotopes show widespread dimension from east to west for YAK and from north to south for TAY. The climate signal is stronger expressed in whole wood than in cellulose for both Siberian regions. The comparison analysis between delta 13C cellulose chronologies from FIN and TAY revealed a similar declining trend over recent decades, which could be explained by the physiological effect of the increasing atmospheric CO(2). TRW, MXD and delta 13C chronologies from TAY and YAK show a negative correlation with North Atlantic Oscillation index, while the delta 18O chronologies show positive correlations, confirming recent warming trend at high latitudes. The strong correlation between GISP2 and delta 18O of cellulose from YAK chronologies reflects the large-scale climatic signal connected by atmospheric circulation patterns expressed by precipitation.

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Держатели документа:
[Sidorova, Olga V.
Siegwolf, Rolf T. W.
Saurer, Matthias] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[Sidorova, Olga V.
Naurzbaev, Mukhtar M.
Shashkin, Alexander V.
Vaganov, Eugene A.] RAS, VN Sukachev Inst Forest SB, Krasnoyarsk 660036, Russia
[Vaganov, Eugene A.] Siberian Fed Univ, Krasnoyarsk 660049, Russia

Доп.точки доступа:
Sidorova, O.V.; Siegwolf, RTW; Saurer, M...; Naurzbaev, M.M.; Shashkin, A.V.; Vaganov, E.A.

[Text] / V. I. Kharuk [et al.] // Scand. J. Forest Res. - 2010. - Vol. 25, Is. 5. - P446-454, DOI 10.1080/02827581.2010.509329. - Cited References: 47. - This research was supported by the NASA Science Mission Directorate, Terrestrial Ecology Program, Siberian Branch Russian Academy of Science Program 23.3.33 and grant MK-2497.2009.5. The authors thank Dr V. Miglan for help with the dendrochronology analysis and Dr Joanne Howl for editing this manuscript. . - 9. - ISSN 0282-7581РУБ Forestry

Аннотация: The elevational tree-line change within the transitional zone between boreal forest and Mongolian steppes was quantified for the last millennium. The basic approach included studies along transects and measurements of tree-line positions to identify current, historical, refugee and regeneration tree lines. Tree mortality and natality were determined based on dendrochronology analysis. Tree mortality in the sixteenth to eighteenth centuries coincided with the Little Ice Age, while tree establishment was stimulated by warming at the end of nineteenth century. Downward shifts in tree line varied by an order of magnitude. The current tree-line position reoccupied the historical tree line in some transects, and was below or above the historical line in others. The regeneration line surpassed the historical tree line by 91 +/- 46 m (mean +/- SD). Such a heterogeneous response was attributed to local topoclimatic conditions and sapling recruitment efficiency. A mean annual 1 degrees C increase in temperature was associated with an upward shift of the tree line by about 70 m. The upward migration rate of the current tree line was about 0.8 m year-1 during the last century. The regeneration migration rate was about 2.3 m year-1 over the past three decades. Finally, the transformation of krummholz forms of larch and Siberian pine into arborescent form was documented.

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Держатели документа:
[Kharuk, Vyacheslav I.
Im, Sergey T.
Dvinskaya, Maria L.] VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Ranson, Kenneth J.] NASAs Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

Доп.точки доступа:
Kharuk, V.I.; Im, S.T.; Dvinskaya, M.L.; Ranson, K.J.

[Text] / O. V. Sidorova [et al.] // J. Geophys. Res.-Biogeosci. - 2008. - Vol. 113, Is. G2. - Ст. G02019, DOI 10.1029/2007JG000473. - Cited References: 63 . - 13. - ISSN 0148-0227РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: We related tree ring width (TRW) and isotopic composition (delta(13)C, delta(18)O) of wood and cellulose from four larch trees (Larix cajanderi Mayr.) to climate parameters. The material was sampled in northeastern Yakutia [70 degrees N-148 degrees E] for the recent (AD 1880-2004) and early Medieval (AD 900-1000) periods. During the recent period June, July, and August air temperatures were positively correlated with delta(13)C and delta(18)O of wood and cellulose, while July precipitation was negatively correlated. Furthermore, the vapor pressure deficit (VPD) of July and August was significantly correlated with delta(13)C of wood and cellulose, but VPD had almost no influence on delta(18)O. Comparative analyses between mean isotope values for the (AD 900-1000) and (AD 1880-2004) periods indicate similar ranges of climatic conditions, with the exception of the period AD 1950-2004. While isotopic ratios in cellulose are reliably related to climatic variables, during some periods those in whole wood showed even stronger relationships. Strong positive correlations between delta(18)O of cellulose and Greenland ice-core (GISP2) data were detected for the beginning of the Medieval period (r = 0.86; p 0.05), indicating the reliability of isotope signals in tree rings for large-scale reconstructions.

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Держатели документа:
[Sidorova, Olga V.
Naurzbaev, Mukhtar M.
Vaganov, Eugene A.] Akademgorodok, VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Siegwolf, Rolf T. W.
Saurer, Matthias] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[Vaganov, Eugene A.] Siberian Fed Univ, Krasnoyarsk, Russia

Доп.точки доступа:
Sidorova, O.V.; Siegwolf, RTW; Saurer, M...; Naurzbaev, M.M.; Vaganov, E.A.

[Text] / L. B. Larsen [et al.] // Geophys. Res. Lett. - 2008. - Vol. 35, Is. 4. - Ст. L04708, DOI 10.1029/2007GL032450. - Cited References: 36 . - 5. - ISSN 0094-8276РУБ Geosciences, Multidisciplinary

Аннотация: New and well-dated evidence of sulphate deposits in Greenland and Antarctic ice cores indicate a substantial and extensive atmospheric acidic dust veil at A. D. 533-534 +/- 2 years. This was likely produced by a large explosive, near equatorial volcanic eruption, causing widespread dimming and contributing to the abrupt cooling across much of the Northern Hemisphere known from historical records and tree-ring data to have occurred in A. D. 536. Tree-ring data suggest that this was the most severe and protracted short-term cold episode across the Northern Hemisphere in the last two millennia, even surpassing the severity of the cold period following the Tambora eruption in 1815.

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Держатели документа:
[Larsen, L. B.
Vinther, B. M.
Clausen, H. B.
Siggaard-Andersen, M. -L.
Hammer, C. U.] Univ Copenhagen, Niels Bohr Inst, Ctr Ice & Climate, DK-2100 Copenhagen, Denmark
[Vinther, B. M.
Briffa, K. R.
Melvin, T. M.
Jones, P. D.] Univ E Anglia, Sch Environm Sci, Climat Res Unit, Norwich NR4 7TJ, Norfolk, England
[Eronen, M.] Univ Helsinki, Dept Geol, FI-00014 Helsinki, Finland
[Grudd, H.
Gunnarson, B. E.] Stockholm Univ, Dept Phys Geog & Quaternary Geol, S-10691 Stockholm, Sweden
[Hantemirov, R. M.] Russian Acad Sci, Ural Branch, Inst Plant & Anim Ecol, Lab Dendrochronol, Ekaterinburg 620144, Russia
[Naurzbaev, M. M.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Dendroecol Dept, Krasnoyarsk 660036, Russia
[Nicolussi, K.] Univ Innsbruck, Inst Geog, A-6020 Innsbruck, Austria

Доп.точки доступа:
Larsen, L.B.; Vinther, B.M.; Briffa, K.R.; Melvin, T.M.; Clausen, H.B.; Jones, P.D.; Siggaard-Andersen, M.L.; Hammer, C.U.; Eronen, M...; Grudd, H...; Gunnarson, B.E.; Hantemirov, R.M.; Naurzbaev, M.M.; Nicolussi, K...

[Text] / E. A. Vaganov [et al.] // Dokl. Earth Sci. - 2000. - Vol. 375, Is. 8. - P1314-1317. - Cited References: 12 . - 4. - ISSN 1028-334XРУБ Geosciences, Multidisciplinary


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Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Univ E Anglia, Climat Res Unit, Norwich NR4 7TJ, Norfolk, England
Swiss Fed Inst Forest Snow & Landscape Res, CH-8093 Birmensdorf, Switzerland
Russian Acad Sci, Inst Plant & Anim Ecol, Ural Div, Sverdlovsk 620219, Russia

Доп.точки доступа:
Vaganov, E.A.; Briffa, K.R.; Naurzbaev, M.M.; Schweingruber, F.H.; Shiyatov, S.G.; Shishov, V.V.

[Текст] / E. A. Vaganov [и др.] // Dokl. Akad. Nauk. - 1998. - Vol. 358, Is. 5. - С. 681-684. - Cited References: 11 . - 4. - ISSN 0869-5652РУБ Multidisciplinary Sciences


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Держатели документа:
VN Sukachev Forest Technol Inst, Krasnoyarsk, Russia
Russian Acad Sci, Inst Plant & Anim Ecol, Ekaterinburg, Russia
Taimyr Biosphere Pk, Khatanga, Russia
Доп.точки доступа:
Vaganov, E.A.; Shiyatov, S.G.; Khantemirov, R.M.; Naurzbaev, M.M.

[Text] / M. . Saurer [et al.] // Geophys. Res. Lett. - 2002. - Vol. 29, Is. 15. - Ст. 1296, DOI 10.1029/2001GL013739. - Cited References: 23 . - 4. - ISSN 0094-8276РУБ Geosciences, Multidisciplinary

Аннотация: [1] The oxygen isotope ratio of ice cores and sea-sediments is an extremely useful source of information on long-term climatic changes. A similar approach has been applied to the oxygen isotope ratio of tree rings to enable a pattern-based reconstruction of the isotope variations on the continents. We present an oxygen isotope map for northern Eurasia spanning from Norway to Siberia, that reflects the isotope distribution in the late 19th century, and compare it with an equivalent map for the present-day situation. The average isotope values of 130 trees show a large east-to-west gradient and are highly correlated with the isotope distribution of precipitation. Surprisingly, the (18)O/(16)O ratio of the wood has been decreasing in the interior of the continent since the late 19th century, in contrast to the strong temperature increase recorded by meteorological data. From this isotope trend over time a change in the seasonality of precipitation can be inferred.

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Держатели документа:
Paul Scherrer Inst, CH-5232 Villigen, Switzerland
Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland
Russian Acad Sci, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
Russian Acad Sci, Ural Branch, Inst Plant & Anim Ecol, Ekaterinburg 620219, Russia

Доп.точки доступа:
Saurer, M...; Schweingruber, F...; Vaganov, E.A.; Shiyatov, S.G.; Siegwolf, R...

[Text] / R. A. MONSERUD, N. M. TCHEBAKOVA, R. . LEEMANS // Clim. Change. - 1993. - Vol. 25, Is. 1. - P59-83, DOI 10.1007/BF01094084. - Cited References: 73 . - 25. - ISSN 0165-0009РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: A modified Budyko global vegetation model is used to predict changes in global vegetation patterns resulting from climate change (CO2 doubling). Vegetation patterns are predicted using a model based on a dryness index and potential evaporation determined by solving radiation balance equations. Climate change scenarios are derived from predictions from four General Circulation Models (GCM's) of the atmosphere (GFDL, GISS, OSU, and UKMO). Global vegetation maps after climate change are compared to the current climate vegetation map using the kappa statistic for judging agreement, as well as by calculating area statistics. All four GCM scenarios show similar trends in vegetation shifts and in areas that remain stable, although the UKMO scenario predicts greater warming than the others. Climate change maps produced by all four GCM scenarios show good agreement with the current climate vegetation map for the globe as a whole, although over half of the vegetation classes show only poor to fair agreement. The most stable areas are Desert and Ice/Polar Desert. Because most of the predicted warming is concentrated in the Boreal and Temperate zones, vegetation there is predicted to undergo the greatest change. Specifically, all Boreal vegetation classes are predicted to shrink. The interrelated classes of Tundra, Taiga, and Temperate Forest are predicted to replace much of their poleward mostly northern) neighbors. Most vegetation classes in the Subtropics and Tropics are predicted to expand. Any shift in the Tropics favoring either Forest over Savanna, or vice versa, will be determined by the magnitude of the increased precipitation accompanying global warming. Although the model predicts equilibrium conditions to which many plant species cannot adjust (through migration or microevolution) in the 50-100 y needed for CO2 doubling, it is nevertheless not clear if projected global warming will result in drastic or benign vegetation change.

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Держатели документа:
RUSSIAN ACAD SCI,INST FOREST,KRASNOYARSK 660036,RUSSIA
NATL INST PUBL HLTH & ENVIRONM PROTECT,DEPT GLOBAL CHANGE,3720 BA BILTHOVEN,NETHERLANDS

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MONSERUD, R.A.; TCHEBAKOVA, N.M.; LEEMANS, R...

[Text] / N. M. TCHEBAKOVA [et al.] // J. Biogeogr. - 1993. - Vol. 20, Is. 2. - P129-144, DOI 10.2307/2845667. - Cited References: 74 . - 16. - ISSN 0305-0270РУБ Ecology + Geography, Physical

Аннотация: A global vegetation model based on the climatological approach of Budyko is developed. The major vegetation zones of the world are predicted by a two-dimensional ordination of a Dryness Index and Potential Evaporation, which is derived from radiation balance. Mean temperature of the warmest month is also used to separate the Ice/Polar Desert, Tundra, and Taiga zones. Predictions of vegetation distributions are made using a global climate database interpolated to a 0.50 by 0.50 terrestrial grid. The overall impression from examining the resulting global vegetation map is that the modified Budyko model predicts the location and distribution of the world's vegetation fairly well. Comparison between model predictions and Olson's actual vegetation map were based on Kappa statistics and indicate good agreement for Ice/Polar Desert, Tundra, Taiga, and Desert (even though we predict too much Desert). Agreement with Olson's map was fair for predicting the specific location of Tropical Rain Forest and Tropical Savannas, and was good for predicting their general location at a larger scale. Agreement between Olson's map and model predictions were poor for Steppe, Temperate Forest, Tropical Seasonal Forest, and Xerophytic Shrubs, although the predictions for Temperate Forest and Tropical Seasonal Forest improved to fair at a larger scale for judging agreement. Agreement with the baseline map of Olson was poor for Steppe and Xerophytic Shrubs at all scales of comparison. Based on Kappa statistics, overall agreement between model predictions and Olson's map is between fair and good, depending on the scale of comparison. The model performed well in comparison to other global vegetation models. Apparently the calculation of radiation balance and the resulting Dryness Index and Potential Evaporation provides important information for predicting the distribution of the major vegetation zones of the world.

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Держатели документа:
ACAD SCI,INST FOREST,ACADEMGORODOK,660036 KRASNOYARSK,RUSSIA
USDA,INTERMT RES STN,FOREST SERV,MOSCOW,ID 83843
NATL INST PUBL HLTH & ENVIRONM PROTECT,DEPT GLOBAL CHANGE,3720 BILTHOVEN,NETHERLANDS
INT INST APPL SYST ANAL,A-2361 LAXENBURG,AUSTRIA

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TCHEBAKOVA, N.M.; MONSERUD, R.A.; LEEMANS, R...; GOLOVANOV, S...

/ O. V. Sidorova [et al.] // Quaternary Science Reviews. - 2013. - Vol. 73. - P93-102, DOI 10.1016/j.quascirev.2013.05.015 . - ISSN 0277-3791
Аннотация: To answer the question "Has the recent warming no analogues in the Siberian north?" we analyzed larch tree samples (. Larix gmelinii Rupr.) from permafrost zone in the eastern Taimyr (TAY) (72В°N, 102В°E) using tree-ring and stable isotope analyses for the Climatic Optimum Period (COP) 4111-3806 BC and Medieval Warm Period (MWP) 917-1150 AD, in comparison to the recent period (RP) 1791-2008 AD.We developed a description of the climatic and environmental changes in the eastern Taimyr using tree-ring width and stable isotope (?13C, ?18O) data based on statistical verification of the relationships to climatic parameters (temperature and precipitation).Additionally, we compared our new tree-ring and stable isotope data sets with earlier published July temperature and precipitation reconstructions inferred from pollen data of the Lama Lake, Taimyr Peninsula, ?18O ice core data from Akademii Nauk ice cap on Severnaya Zemlya (SZ) and ?18O ice core data from Greenland (GISP2), as well as tree-ring width and stable carbon and oxygen isotope data from northeastern Yakutia (YAK).We found that the COP in TAY was warmer and drier compared to the MWP but rather similar to the RP. Our results indicate that the MWP in TAY started earlier and was wetter than in YAK. July precipitation reconstructions obtained from pollen data of the Lama Lake, oxygen isotope data from SZ and our carbon isotopes in tree cellulose agree well and indicate wetter climate conditions during the MWP.Consistent large-scale patterns were reflected in significant links between oxygen isotope data in tree cellulose from TAY and YAK, and oxygen isotope data from SZ and GISP2 during the MWP and the RP.Finally, we showed that the recent warming is not unprecedented in the Siberian north. Similar climate conditions were recorded by tree-rings, stable isotopes, pollen, and ice core data 6000 years ago. В© 2013 Elsevier Ltd.

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Держатели документа:
Paul Scherrer Institute, 5232 Villigen, Switzerland
V.N. Sukachev Institute of Forest SB RAS, 660036 Krasnoyarsk, Akademgorodok, Russian Federation
Institute of Geology and Minerology, University of Koeln, 50674 Koln, Germany
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Research Unit Potsdam, 14473 Potsdam, Germany

Доп.точки доступа:
Sidorova, O.V.; Saurer, M.; Andreev, A.; Fritzsche, D.; Opel, T.; Naurzbaev, M.M.; Siegwolf, R.

/ V. I. Kharuk [et al.] // Arctic, Antarctic, and Alpine Research. - 2013. - Vol. 45, Is. 4. - P526-537, DOI 10.1657/1938-4246-45.4.526 . - ISSN 1523-0430
Аннотация: The goal of the study was to provide an analysis of climate impact before, during, and after the Little Ice Age (LIA) on the larch (Larix gmelinii) tree line at the northern extreme of Siberian forests. Recent decadal climate change impacts on the tree line, regeneration abundance, and age structure were analyzed. The location of the study area was within the forest-tundra ecotone (elevation range 170-450 m) in the Anabar Plateau, northern Siberia. Field studies were conducted along elevational transects. Tree natality/mortality and radial increment were determined based on dendrochronology analyses. Tree morphology, number of living and subfossil trees, regeneration abundance, and age structure were studied. Locations of pre-LIA, LIA, and post-LIA tree lines and refugia boundaries were established. Long-term climate variables and drought index were included in the analysis. It was found that tree mortality from the 16th century through the beginning of the 19th century caused a downward tree line recession. Sparse larch stands experienced deforestation, transforming into tundra with isolated relict trees. The maximum tree mortality and radial growth decrease were observed to have occurred at the beginning of 18th century. Now larch, at its northern boundary in Siberia, is migrating into tundra areas. Upward tree migration was induced by warming in the middle of the 19th century. Refugia played an important role in repopulation of the forest-tundra ecotone by providing a seed source and shelter for recruitment of larch regeneration. Currently this ecotone is being repopulated mainly by tree cohorts that were established after the 1930s. The last two decades of warming did not result in an acceleration of regeneration recruitment because of increased drought conditions. The regeneration line reached (but did not exceed) the pre-LIA tree line location, although contemporary tree heights and stand densities are comparatively lower than in the pre-LIA period. The mean rate of tree line upward migration has been about 0.35 m yr-1 (with a range of 0.21-0.58), which translates to a tree line response to temperature of about 55 m C-1.

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Держатели документа:
V. N. Sukachev Institute of Forest, Krasnoyarsk 660036, Russian Federation
Goddard Space Flight Center, NASA, Code 618, Greenbelt, MD 20771, United States

Доп.точки доступа:
Kharuk, V.I.; Ranson, K.J.; Im, S.T.; Oskorbin, P.A.; Dvinskaya, M.L.; Ovchinnikov, D.V.

/ V. I. Kharuk [et al.] // Environmental Research Letters. - 2011. - Vol. 6, Is. 4. - Ст. 045208, DOI 10.1088/1748-9326/6/4/045208 . - ISSN 1748-9318
Аннотация: The fire history of the northern larch forests within the permafrost zone in a portion of northern Siberia (∼66°N, 100°E) was studied. Since there is little to no human activity in this area, fires within the study area were mostly caused by lightning. Fire return intervals (FRI) were estimated on the basis of burn marks on tree stems and dates of tree natality. FRI values varied from 130 to 350yr with a 200 50yr mean. For southerly larch dominated communities, FRI was found to be shorter (77 20yr at ∼ 61°N, and 82 7at 64°N), and it was longer at the northern boundary (∼71°) of larch stands (320 50yr). During the Little Ice Age period in the 16th-18th centuries, FRI was approximately twice as long those as recorded in this study. Fire caused changes in the soil including increases in soil drainage and permafrost thawing depth, and a radial growth increase to about twice the background value (with more than six times observed in extreme cases). This effect may simulate the predicted warming impact on the larch growth in the permafrost zone. © 2011 IOP Publishing Ltd.

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Держатели документа:
V N Sukachev Institute of Forest, Krasnoyarsk 660036, Russian Federation
NASA's Goddard Space Flight Center, CODE 618, Greenbelt, MD 20771, United States

Доп.точки доступа:
Kharuk, V.I.; Ranson, K.J.; Dvinskaya, M.L.; Im, S.T.

/ M. M. Naurzbaev, E. A. Vaganov, O. V. Sidorova // Earth's Cryosphere. - 2003. - Vol. 7, Is. 2. - С. 84-91 . - ISSN 1560-7496
Аннотация: An integral estimation of tree-ring growth spatial-temporal conjugation was carried out based on tree-ring chronology network of subarctic zone of Siberia, Ural and Scandinavia for the last 2000 years. Phase and amplitude disagreements of the annual growth and its decadal fluctuation in different subarctic sectors of Eurasia are changed by synchronous fluctuation when century and longer growth cycles are considered. Long-term changes of radial growth indicate common character of global climatic changes in subarctic zone of Eurasia. Medieval warming occurred from 10 to 12 centuries and 15-century warming were changed by Little Ice Age with the cooling culmination taking place in the 17 century. Current warming which started at the beginning of the 19th-century for the moment does not exceed the amplitude of the medieval warming. The tree-ring chronologies do not indicate unusually abrupt temperature rise during the last century, which could be reliably associated with greenhouse gas increasing in the atmosphere of our planet. Modem period is characterized by heterogeneity of warming effect in subarctic regions of Eurasia. Integral tree-ring chronology of the Northern Eurasia shows well agreement with 18O fluctuations in the ice core obtained for Greenland (GISP2). В© M.M. Naurzbaev, E.A. Vaganov, O.V. Sidorova, 2003.

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Держатели документа:
V.N. Sukachev Institute of Forest, SB RAS, 660036 Krasnoyarsk, Akademgorodok, Russian Federation

Доп.точки доступа:
Naurzbaev, M.M.; Vaganov, E.A.; Sidorova, O.V.

/ V. S. Myglan [et al.] // Geogr. Nat. Resour. - 2012. - Vol. 33, Is. 3. - P200-207, DOI 10.1134/S1875372812030031 . - ISSN 1875-3728
Аннотация: We have constructed and analyzed the 1896-year-long tree-ring chronology for the territory of the Altai Republic. The chronology was based on wood of live trees and remains of trunks of Siberian larch (Larix sibirica Ledeb.) from the upper timberline (2300 m) of the Dzhelo river valley. The chronology agrees well with palaeoclimatic data and reflects the main climatic changes in the northern hemisphere for the last two millennia: an extraordinary decrease in increment after the year 536, "mean secular warming", the "Little Ice Age", and current warming. By calculating the response function between the tree-ring chronology for the Dzhelo and data from weather stations, it was possible to reconstruct the series of June-July air temperature variability for the last 1500 years. The chronology can be used in dating archaeological wood, i. e. in determining the calendar time at which archaeological monuments were constructed. В© 2012 Pleiades Publishing, Ltd.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Altai State University, Barnaul, Russian Federation
Paul Scherrer Institute, Villigen, Switzerland

Доп.точки доступа:
Myglan, V.S.; Zharnikova, O.A.; Malysheva, N.V.; Gerasimova, O.V.; Vaganov, E.A.; Sidorov, O.V.