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

w10=
Найдено документов в текущей БД: 24

    Radial growth and tree-ring structure of larch trees at North timberline in Yakutia
: материалы временных коллективов / O. V. Gerasimova, O. V. Sidorova // Climate change and their impact on boreal and temperate forests: Abstracts of the International Conference (June 5-7, 2006, Ekaterinburg, Russia). - 2006. - С. 28


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

Доп.точки доступа:
Sidorova, Ol'ga; Сидорова, Ольга Владимировна; Герасимова, Оксана Владимировна
Имеются экземпляры в отделах:
РСФ (29.01.2008г. (1 экз.) - Б.ц.) - свободны 1

    Spatial patterns of climatic changes in the Eurasian north reflected in Siberian larch tree-ring parameters and stable isotopes
[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 1354-1013
РУБ 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.

Полный текст,
WOS,
Scopus

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.

    Isotopic composition (delta(13)C, delta(18)O) in wood and cellulose of Siberian larch trees for early Medieval and recent periods
[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 0148-0227
РУБ 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.

WOS,
Scopus

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.

    Reconstruction of the mid-Holocene palaeoclimate of Siberia using a bioclimatic vegetation model
[Text] / R. A. Monserud, N. M. Tchebakova, O. V. Denissenko // Paleogeogr. Paleoclimatol. Paleoecol. - 1998. - Vol. 139, Is. 01.02.2013. - P15-36, DOI 10.1016/S0031-0182(97)00127-2. - Cited References: 72 . - 22. - ISSN 0031-0182
РУБ Geography, Physical + Geosciences, Multidisciplinary + Paleontology

Аннотация: A bioclimatic vegetation model is used to reconstruct the palaeoclimate of Siberia during the mid-Holocene, a warm. moist period also known as the Holocene climatic optimum. Our goal is to determine the magnitude of climatic anomalies associated with mapped changes in vegetation classes. Reconstructed anomalies are the logical outcome of the bioclimatic assumptions in the Siberia vegetation model operating on location-specific differences in the palaeomap of Khotinsky and the modern map of Isachenko. The Siberian vegetation model specifics the relationship between vegetation classes and climate using climatic indices (growing-degree days, dryness index, continentality index). These indices are then converted into parameters commonly used in climatic reconstructions: January and July mean temperatures. and annual precipitation. Climatic anomalies since the mid-Holocene are then displayed by latitude and longitude. An advantage of a model-based approach to climatic reconstruction is that grid cells can be modelled independently. without the need for interpolation to create smoothed temperature and precipitation contours. The resulting pattern of anomalies is complex. On average. Siberian winters in the mid-Holocene were 3.7 degrees C warmer than now, with greater warming in higher latitudes. The major winter warming was concentrated in the Taiga zone on the plains and tablelands of East Siberia, where a warm and moist climate was necessary to support a broad expanse of shade-tolerant dark-needled Taiga. January temperatures averaged about 1 degrees C warmer than now across southern Siberia. although large areas show no change. July temperature anomalies (0-5 degrees C) are distributed mostly latitudinally, with anomalies increasing with latitude above 65 degrees N. At latitudes below 65 degrees N, July temperature was nearly the same as today across Siberia. Based on July temperatures. Siberian summers in the mid-Holocene were 0.7 degrees C warmer than today's. Annual precipitation in Siberia was predicted to be 95 mm greater in the mid-Holocene than now. Most of the increase was concentrated in East Siberia (154 mm average increase). The precipitation anomalies are small in the south. Large precipitation anomalies are found in central and northeastern Siberia. This location corresponds rather closely to the large anomalies in January temperature in East Siberia. The annual precipitation Increase was > 200 mm more than present precipitation in Yakutia. This increase corresponds to the deep penetration of moisture-demanding dark-needled species (Pinus sibirica. Abies sibirica, Picea obovata) into East Siberia in the mid-Holocene, where currently only drought-resistant light-needled species (Larix spp.) are found. Another area of increased precipitation was along the Polar Circle in West Siberia and at the base of the Taymyr Peninsula in East Siberia. In combination with 2-5 degrees C warmer summers, moister climates there allowed forests to advance far northward into what is now the Tundra zone.

WOS,
Полный текст,
Scopus

Держатели документа:
Forest Serv, Rocky Mt Res Stn, USDA, Portland, OR 97205 USA
Forest Serv, Pacific NW Res Stn, USDA, Portland, OR 97205 USA
Russian Acad Sci, Siberian Branch, Sukachev Forest Inst, Krasnoyarsk 660036, Russia
Moscow State Univ, Dept Geog, Moscow 119899, Russia

Доп.точки доступа:
Monserud, R.A.; Tchebakova, N.M.; Denissenko, O.V.

    The extreme fire season in the central taiga forests of Yakutia
[Text] / G. A. Ivanova ; ed.: JG Goldammer, , JG Goldamm // FIRE IN ECOSYSTEMS OF BOREAL EURASIA. Ser. FORESTRY SCIENCES : KLUWER ACADEMIC PUBL, 1996. - Vol. 48: International Scientific Conference on Fire in Ecosystems of Boreal Eurasia (JUN-JUL -, 1993, KRASNOYARSK, RUSSIA). - P260-270. - Cited References: 0 . - 11. - ISBN 0-7923-4137-6
РУБ Ecology + Forestry


WOS

Держатели документа:
RUSSIAN ACAD SCI,VN SUKACHEV INST FORESTRY & TIMBER,SIBERIAN BRANCH,KRASNOYARSK 660036,RUSSIA
Доп.точки доступа:
Ivanova, G.A.; Goldammer, JG \ed.\; Goldamm, , JG \ed.\

    The effects of climate, permafrost and fire on vegetation change in Siberia in a changing climate
[Text] / N. M. Tchebakova, E. . Parfenova, A. J. Soja // Environ. Res. Lett. - 2009. - Vol. 4, Is. 4. - Ст. 45013, DOI 10.1088/1748-9326/4/4/045013. - Cited References: 49 . - 9. - ISSN 1748-9326
РУБ Environmental Sciences + Meteorology & Atmospheric Sciences
Рубрики:
NORTHERN EURASIA
   BOREAL FOREST

   MODEL

   PARAMETERS

Кл.слова (ненормированные):
climate change -- forest fire -- permafrost -- vegetation -- Siberia

Аннотация: Observations and general circulation model projections suggest significant temperature increases in Siberia this century that are expected to have profound effects on Siberian vegetation. Potential vegetation change across Siberia was modeled, coupling our Siberian BioClimatic Model with several Hadley Centre climate change scenarios for 2020, 2050 and 2080, with explicit consideration of permafrost and fire activity. In the warmer and drier climate projected by these scenarios, Siberian forests are predicted to decrease and shift northwards and forest-steppe and steppe ecosystems are predicted to dominate over half of Siberia due to the dryer climate by 2080. Despite the large predicted increases in warming, permafrost is not predicted to thaw deep enough to sustain dark (Pinus sibirica, Abies sibirica, and Picea obovata) taiga. Over eastern Siberia, larch (Larix dahurica) taiga is predicted to continue to be the dominant zonobiome because of its ability to withstand continuous permafrost. The model also predicts new temperate broadleaf forest and forest-steppe habitats by 2080. Potential fire danger evaluated with the annual number of high fire danger days (Nesterov index is 4000-10 000) is predicted to increase by 2080, especially in southern Siberia and central Yakutia. In a warming climate, fuel load accumulated due to replacement of forest by steppe together with frequent fire weather promotes high risks of large fires in southern Siberia and central Yakutia, where wild fires would create habitats for grasslands because the drier climate would no longer be suitable for forests.

WOS

Держатели документа:
[Tchebakova, N. M.
Parfenova, E.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Soja, A. J.] NASA Langley Res Ctr, NIA, Hampton, VA 23681 USA

Доп.точки доступа:
Tchebakova, N.M.; Parfenova, E...; Soja, A.J.

    Twentieth-century summer warmth in northern Yakutia in a 600-year context
[Text] / M. K. Hughes [et al.] // Holocene. - 1999. - Vol. 9, Is. 5. - P629-634, DOI 10.1191/095968399671321516. - Cited References: 30 . - 6. - ISSN 0959-6836
РУБ Geography, Physical + Geosciences, Multidisciplinary
Рубрики:
TEMPERATURE PATTERNS
   TREE-RINGS

Кл.слова (ненормированные):
summer temperature -- volcanic activity -- dendrochronology -- larch -- Larix cajanderi -- ring width -- Yakutia

Аннотация: We report unusual twentieth-century early-summer warmth recorded by larch tree-rings at the northern tree-line in far northeastern Eurasia (Yakutia). The tree-ring series are strongly replicated and well suited to the detection of fluctuations on interannual to century timescales. They are strongly correlated with local instrumental temperature data. Mean early-summer temperature in the twentieth century significantly exceeds that of any period of the same length since Ao 1400. A century-scale trend, which commences in the mid-nineteenth century, is superimposed on interannual and decadal fluctuations, for example a marked cooling since 1978. While many of the 20 coolest early summers in the reconstruction occur within a few years after major explosive volcanic eruptions from low-latitude volcanoes, several of the 20 warmest early summers followed major explosive eruptions from high-latitude volcanoes.

WOS,
Scopus

Держатели документа:
Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA
Russian Acad Sci, Siberian Branch, Inst Forest, Krasnoyarsk 660036, Russia
Russian Acad Sci, Urals Branch, Inst Plant & Anim Ecol, Ekatarinburg 620219, Russia

Доп.точки доступа:
Hughes, M.K.; Vaganov, E.A.; Shiyatov, S...; Touchan, R...; Funkhouser, G...

    Present-day and mid-Holocene biomes reconstructed from pollen and plant macrofossil data from the former Soviet Union and Mongolia
[Text] / P. E. Tarasov [et al.] // J. Biogeogr. - 1998. - Vol. 25, Is. 6. - P1029-1053, DOI 10.1046/j.1365-2699.1998.00236.x. - Cited References: 140 . - 25. - ISSN 0305-0270
РУБ Ecology + Geography, Physical
Рубрики:
CLIMATE
   RECORD

Кл.слова (ненормированные):
biome -- vegetation changes -- vegetation maps -- plant functional types -- pollen taxa -- Russia -- Former Soviet Union -- Mongolia

Аннотация: Fossil pollen data supplemented by tree macrofossil records were used to reconstruct the vegetation of the Former Soviet Union and Mongolia at 6000 years. Pollen spectra were assigned to biomes using the plant-functional-type method developed by Prentice ct al. (1996). Surface pollen data and a modern vegetation map provided a test of the method. This is the first time such a broad-scale vegetation reconstruction for the greater part of northern Eurasia has been attempted with objective techniques. The new results confirm previous regional palaeoenvironmental studies of the mid-Holocene while providing a comprehensive synopsis and firmer conclusions. West of the Ural Mountains temperate deciduous forest extended both northward and southward from its modern range. The northern limits of cool mixed and cool conifer forests were also further north than present. Taiga was reduced in European Russia, but was extended into Yakutia where now there is cold deciduous forest. The northern limit of taiga was extended (as shown by increased Picea pollen percentages, and by tree macrofossil records north of the present-day forest limit) but tundra was still present in north-eastern Siberia. The boundary between forest and steppe in the continental interior did not shift substantially, and dry conditions similar to present existed in western Mongolia and north of the Aral Sea.

Полный текст,
WOS

Держатели документа:
Moscow MV Lomonosov State Univ, Dept Geog, Moscow 119899, Russia
Univ Lund, S-22100 Lund, Sweden
Brown Univ, Dept Geol Sci, Providence, RI 02912 USA
Russian Acad Sci, Inst Geog, Moscow 109017, Russia
Moscow MV Lomonosov State Univ, Dept Biol, Moscow 119899, Russia
Ukrainian Acad Sci, Inst Biol, Kiev, Ukraine
Tomsk State Univ, Inst Biol & Biophys, Tomsk 634050, Russia
Fac Sci & Tech St Jerome, CNRS, UA 1152, Lab Bot Hist & Palynol, F-13397 Marseille 20, France
St Petersburg State Univ, Dept Geog & Geoecol, St Petersburg 199178, Russia
Russian Acad Sci, Inst Evolut & Ecol, Moscow 109017, Russia
Russian Acad Sci, Inst Biol, Karelian Branch, Petrozavodsk 185610, Russia
Russian Acad Sci, Forest Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Univ Lund, Dept Plant Ecol, S-22362 Lund, Sweden
Russian Acad Sci, Inst Limnol, St Petersburg 196199, Russia
Georgian Acad Sci, Inst Palaeobiol, GE-380004 Tbilisi, Rep of Georgia
Cent Geol Lab, Moscow, Russia
Russian Acad Sci, Forest Inst, Ural Branch, Ekaterinburg 620134, Russia
Estonian Acad Sci, Inst Geol, EE-0105 Tallinn, Estonia
Russian Acad Sci, Inst Geol, Siberian Branch, Novosibirsk 630090, Russia
Inst Geol Sci, Minsk 220141, Byelarus

Доп.точки доступа:
Tarasov, P.E.; Webb, T...; Andreev, A.A.; Afanas'eva, N.B.; Berezina, N.A.; Bezusko, L.G.; Blyakharchuk, T.A.; Bolikhovskaya, N.S.; Cheddadi, R...; Chernavskaya, M.M.; Chernova, G.M.; Dorofeyuk, N.I.; Dirksen, V.G.; Elina, G.A.; Filimonova, L.V.; Glebov, F.Z.; Guiot, J...; Gunova, V.S.; Harrison, S.P.; Jolly, D...; Khomutova, V.I.; Kvavadze, E.V.; Osipova, I.M.; Panova, N.K.; Prentice, I.C.; Saarse, L...; Sevastyanov, D.V.; Volkova, V.S.; Zernitskaya, V.P.

    Is the 20th century warming unprecedented in the Siberian north?
/ O. V. Sidorova [et al.] // Quaternary Science Reviews. - 2013. - Vol. 73. - P93-102, DOI 10.1016/j.quascirev.2013.05.015 . - ISSN 0277-3791

Кл.слова (ненормированные):
Ice cores -- Pollen data -- Stable carbon and oxygen isotopes -- Taimyr -- Tree-rings -- Warming -- Ice core -- Pollen data -- Stable carbon -- Taimyr -- Tree rings -- Warming -- Carbon -- Cellulose -- Forestry -- Ice -- Isotopes -- Lakes -- Lasers -- Oxygen -- Trees (mathematics) -- carbon isotope -- coniferous forest -- data set -- dendrochronology -- Holocene -- ice core -- oxygen isotope -- paleoclimate -- paleoecology -- paleoenvironment -- palynology -- permafrost -- reconstruction -- stable isotope -- tree ring -- twentieth century -- warming -- Carbon -- Cellulose -- Forestry -- Ice -- Isotopes -- Lakes -- Lasers -- Oxygen -- Rings -- Trees -- Krasnoyarsk [Russian Federation] -- Lama Lake -- Russian Federation -- Siberia

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.

Scopus,
WOS,
Полный текст

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.

    Needle, crown, stem, and root phytomass of Pinus sylvestris stands in Russia
/ R. A. Monserud, A. A. Onuchin, N. M. Tchebakova // Forest Ecology and Management. - 1996. - Vol. 82, Is. 1-3. - P59-67 . - ISSN 0378-1127

Кл.слова (ненормированные):
Biomass -- Carbon allocation -- Carbon cycle -- Scots pine -- Stand modeling

Аннотация: With growing concern about predicted global warming, increasing attention is being paid to the phytomass (living plant mass) components of forest stands and their role in the carbon cycle. The ability to predict phytomass components from commonly available inventory data would facilitate our understanding of the latter. We focus on Scots pine (Pinus sylvestris L.) stands in Russia, with the objective of predicting stand phytomass (Mg ha -1) for the four major stand components: needles, crown, stems, and roots. The study area includes regions in Russia where Scots pine is a stand-forming species: from European Russia (33В°E) to Yakutia (130В°E) in eastern Siberia. To ensure that results will be widely applicable, only variables consistently measured in forest inventories were considered as possible predictors: stand age, site quality class, and stocking (stand stem volume with bark, m 3 ha -1). Stand phytomass data were obtained from numerous regional and local phytomass studies, and supplemented with additional unpublished data. This is the first comprehensive study synthesizing stand level phytomass relations for P. sylvestris for most of its range in Russia. The combined results from over 18 regional and local phytomass studies provide a level of generality that is not possible with individual local studies. In addition to estimating stand phytomass components across a wide range of conditions, these phytomass models can also be used to verify carbon allocation rules in process-based models.

Scopus,
Полный текст

Держатели документа:
Intermountain Research Station, USDA Forest Service, Moscow, ID 83843, United States
Forest Institute, Siberian Br. of Russ. Acad. of Sci., Akademgorodok 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Monserud, R.A.; Onuchin, A.A.; Tchebakova, N.M.

    Climatic and geographic patterns in snow density dynamics, Northern Eurasia
/ A. A. Onuchin, T. A. Burenina // Arctic and Alpine Research. - 1996. - Vol. 28, Is. 1. - P99-103 . - ISSN 0004-0851

Кл.слова (ненормированные):
climate effect -- geographical pattern -- snow cover -- snow density -- Eurasia

Аннотация: A body of data on snow density at different phases of snow-cover formation, in different areas provided the basis for building a model accounting for variation of snow density with the most essential factors. The obtained equation shows that the snow density increases with snow depth, snow-cover period, and mean January air temperature. The most intensive is the change of the snow density with air temperature variation in the range from -2 to -10В°C. Within the range of -10 to -25В°C, the snow density varies slightly, and below -25В°C the changes in temperatures do not cause marked changes in snow density. Spatial distribution of snow-cover density background values in North Eurasia is given. The scheme presented shows that there are two regions where the density of the snow cover is very low and does not exceed 0.15 to 0.18 g cm-3. One of them encompasses central Yakutia and northern Transbaikal regions; the other covers Inner Mongolia. These regions are characteristic of extremely continental climate with shallow snow cover and low winter air temperatures. Snow density is substantially affected by orography of the terrain, which complicates the zonal patterns in variability of meteorological parameters. Zones with elevated density of the snow cover are apparent in the Caucasus, in mountain systems of Siberia, the Far East, and Middle Asia. The obtained model accounts for climato-geographical patterns in space-and-time variability of snow density over the territory of Northern Eurasia and can be used for coarse estimation of snow density in the areas with insufficient experiimental data.

Scopus,
WOS

Держатели документа:
Lab. of Forest Climate and Hydrology, V.N. Sukachev Institute of Forest, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Onuchin, A.A.; Burenina, T.A.

    Recurrence of annual increment of Scotch pine in Central Yakutia
[Text] / G. A. Ivanova // Russ. J. Ecol. - 1995. - Vol. 26, Is. 4. - P248-251. - Cited References: 13 . - 4. - ISSN 1067-4136
РУБ Ecology

Аннотация: Investigations of pine forests of different sites were conducted in Central Yakutia. Seven dendrochronological rows were constructed for Scotch pine. Recurrence analysis of long-term fluctuations of tree annual increment was made, and some long-term cycles were detected.


Доп.точки доступа:
Ivanova, G.A.

    A cluster of stratospheric volcanic eruptions in the AD 530s recorded in Siberian tree rings
/ O. V. Churakova Sidorova [et al.] // Global Planet. Change. - 2014. - Vol. 122. - P140-150, DOI 10.1016/j.gloplacha.2014.08.015 . - ISSN 0921-8181

Кл.слова (ненормированные):
AD 536 volcanic eruption -- Cell wall thickness -- Climate -- Larch -- Tree-ring width -- Cellulose -- Volcanoes -- Cell-wall thickness -- Climate -- Larch -- Tree-ring width -- Volcanic eruptions -- Forestry

Аннотация: Recently published, improved chronologies for volcanic sulfate in Greenland and Antarctic ice permit a comparison of the growth responses of absolutely annually dated tree rings at three locations in Siberia with annual ice-core records of volcanic eruptions centered on AD 536. For the first time for this region and period, we present unique data sets for tree-ring width, cell-wall thickness, ?13C and ?18O in cellulose. These were based on multiple samples from relict wood of larch obtained from two sites close to the northern limit of tree growth on the Taimyr Peninsula and in northeastern Yakutia, and at a high-elevation, location 20° further South in the Altai Mts. An event in AD 536 was associated with different, but marked, changes in tree-ring parameters at the high-latitude sites compared with the high elevation site. An AD 541 event was associated with its own distinctive tree-ring responses across the three sites and multiple variables. The years after AD 532 were marked by a strong and sustained decrease in growth at the high-elevation, more southerly, site. The combination of improved ice-core chronology for the climatically effective volcanic eruptions of this part of the 6th century AD, and an array of tree-ring sites with different climates and multiple tree-ring variables permits a richer description of tree responses to this cluster of events. The pattern of tree-ring parameter responses at the three locations in AD 536, AD 541, and perhaps AD 532 is consistent with responses to climatically effective volcanic eruptions influencing tree response in those and subsequent years. © 2014 Elsevier B.V.

Scopus,
Полный текст,
WOS

Держатели документа:
ETH Zurich, Institute of Terrestrial Ecosystems, Zurich 8092, Switzerland
V.N. Sukachev Institute of Forest SB RAS, Krasnoyarsk, Akademgorodok 660036, Russian Federation
Paul Scherrer Institute, Villigen 5232, Switzerland
UFZ - Helmholtz Centre for Environmental Research, Department of Catchment Hydrology, Theodor-Lieser-Stra?e 4, 06120 Halle, Germany
Siberian Federal University, Krasnoyarsk, Svobodniy 79 660049, Russian Federation
University of Arizona, Tucson, AZ 85721, United States

Доп.точки доступа:
Churakova Sidorova, O.V.; Bryukhanova, M.V.; Saurer, M.; Boettger, T.; Naurzbaev, M.M.; Myglan, V.S.; Vaganov, E.A.; Hughes, M.K.; Siegwolf, R.T.W.

    Significant Siberian Vegetation Change is Inevitably Brought on by the Changing Climate
/ N. M. Tchebakova, E. I. Parfenova, A. J. Soja ; ed.: L. . Mueller, A. K. Sheudshen, F. . Eulenstein // NOVEL METHODS FOR MONITORING AND MANAGING LAND AND WATER RESOURCES IN : SPRINGER INT PUBLISHING AG, 2016. - P269-285. - (Springer Water), DOI 10.1007/978-3-319-24409-9_10. - Cited References:51 . -
РУБ Environmental Sciences + Soil Science + Water Resources
Рубрики:
CLASSIFICATION
   DYNAMICS

   MODEL

Кл.слова (ненормированные):
Vegetation -- Siberia -- Climate change -- Scenario

Аннотация: The redistribution of terrestrial ecosystems and individual species is predicted to be profound under Global Climate Model simulations. We modeled the progression of potential vegetation and forest types in Siberia by the end of the twenty-first century by coupling large-scale bioclimatic models of vegetation zones and major conifer species with climatic variables and permafrost using the B1 and A2 Hadley Centre HadCM3 climate change scenarios. In the projected warmer and dryer climate, Siberian taiga forests are predicted to dramatically decrease and shift to the northeast, and forest-steppe, steppe, and novel temperate broadleaf forests are predicted to dominate most of Siberia by 2090. The permafrost should not retreat sufficiently to provide favorable habitats for dark (Pinus sibiric, Abies sibirica, and Picea obovata) taiga, and the permafrost-tolerant L. dahurica taiga should remain the dominant forest type in many current permafrost-lain areas. Water stress and fire-tolerant tree species (Pinus sylvestris and Larix spp.) should have an increased advantage over moisture-loving tree species (P. sibirica, A. sibirica, and P. obovata) in a new climate. Accumulated surface fuel loads due to increased tree mortality from drought, insects, and other factors, especially at the southern forest border and in the Siberian interior (Yakutia), together with an increase in severe fire weather, should also lead to increases in large, high-severity fires that are expected to facilitate vegetation progression toward a new equilibrium with the climate. Adaptation of the forest types and tree species to climate change in the south may be based on the genetic means of individual species and human willingness to aid migration, perhaps by seeding. Additionally, useful and viable crops could be established in agricultural lands instead of failing forests.

WOS,
Смотреть статью

Держатели документа:
Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch SIF SB RAS, Akademgorodok 50-28, Krasnoyarsk 660036, Russia.
NASA, Langley Res Ctr, 21 Langley Blvd,Mail Stop 420, Hampton, VA 23681 USA.

Доп.точки доступа:
Tchebakova, Nadezhda M.; Parfenova, Elena I.; Soja, Amber J.; Mueller, L... \ed.\; Sheudshen, A.K. \ed.\; Eulenstein, F... \ed.\

    Regional coherency of boreal forest growth defines Arctic driftwood provenancing
/ L. Hellmann [et al.] // Dendrochronologia. - 2016. - Vol. 39: Workshop on Current Status and the Potential of Tree-Ring Research in (JAN 20-21, 2015, Krasnoyarsk, RUSSIA). - P3-9, DOI 10.1016/j.dendro.2015.12.010. - Cited References:53 . - ISSN 1125-7865. - ISSN 1612-0051
РУБ Plant Sciences + Forestry + Geography, Physical
Рубрики:
MACKENZIE RIVER DRIFTWOOD
   TREE-RING DATA

   CENTRAL SIBERIA

   ORIGIN

Кл.слова (ненормированные):
Driftwood -- Arctic -- Dendro-provenancing -- Boreal

Аннотация: Arctic driftwood represents a unique proxy archive at the interface of marine and terrestrial environments. Combined wood anatomical and dendrochronological analyses have been used to detect the origin of driftwood and may allow past timber floating activities, as well as past sea ice and ocean current dynamics to be reconstructed. However, the success of driftwood provenancing studies depends on the length, number, and quality of circumpolar boreal reference chronologies. Here, we introduce a Eurasian-wide high-latitude network of 286 ring width chronologies from the International Tree Ring Data Bank (ITRDB) and 160 additional sites comprising the three main boreal conifers Pinus, Larix, and Picea. We assess the correlation structure within the network to identify growth patterns in the catchment areas of large Eurasian rivers, the main driftwood deliverers. The occurrence of common growth patterns between and differing patterns within catchments indicates the importance of biogeographic zones for ring width formation and emphasizes the degree of spatial precision when provenancing. Reference chronologies covering millennial timescales are so far restricted to a few larch sites in Central and Eastern Siberia (eastern Taimyr, Yamal Peninsula and north-eastern Yakutia), as well as several pine sites in Scandinavia, where large rivers are missing though. The general good spatial coverage of tree-ring sites across northern Eurasia indicates the need for updating and extending existing chronologies rather than developing new sites. (C) 2016 Elsevier GmbH. All rights reserved.

WOS,
Смотреть статью

Держатели документа:
WSL, Swiss Fed Res Inst, Birmensdorf, Switzerland.
Oeschger Ctr Climate Change Res, Bern, Switzerland.
Inst Plant & Anim Ecol UD RAS, Ekaterinburg, Russia.
Swiss Fed Inst Technol, Inst Terr Ecosyst, Zurich, Switzerland.
Univ Bern, Dendrolab Ch, Bern, Switzerland.
Johannes Gutenberg Univ Mainz, Mainz, Germany.
Iceland Forest Serv, Reykjavik, Iceland.
VN Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia.
Stolby Natl Wildlife Nat Reserve, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
North Eastern Fed Univ, Yakutsk, Russia.
Melnikov Permafrost Inst, Yakutsk, Russia.
RAS, Inst Geog, Moscow, Russia.
Univ Freiburg, Inst Forest Sci IWW, Freiburg, Germany.
Global Change Res Ctr AS CR, Brno, Czech Republic.

Доп.точки доступа:
Hellmann, Lena; Agafonov, Leonid; Churakova, O.; Duthorn, Elisabeth; Eggertsson, Olafur; Esper, Jan; Kirdyanov, Alexander V.; Knorre, Anastasia A.; Moiseev, Pavel; Myglan, Vladimir S.; Nikolaev, Anatoly N.; Reinig, Frederick; Schweingruber, Fritz; Solomina, Olga; Tegel, Willy; Buntgen, Ulf; buentgen, ulf

    Application of eco-physiological models to the climatic interpretation of delta C-13 and delta O-18 measured in Siberian larch tree-rings
/ O. V. Churakova [et al.] // Dendrochronologia. - 2016. - Vol. 39: Workshop on Current Status and the Potential of Tree-Ring Research in (JAN 20-21, 2015, Krasnoyarsk, RUSSIA). - P51-59, DOI 10.1016/j.dendro.2015.12.008. - Cited References:50 . - ISSN 1125-7865. - ISSN 1612-0051
РУБ Plant Sciences + Forestry + Geography, Physical

Аннотация: Tree-ring width and stable isotopic composition are widely used for the reconstruction of environmental conditions. Eco-physiological models simulating delta C-13 and delta O-18 provide tools to constrain the interpretation of measured tree-ring variations and their relationships to environmental variables. Here, we apply biochemical models of photosynthesis and a model of stomatal conductance to simulate the intra-annual dynamics of delta(13) C values in photo assimilates and tree-rings. We use these models to investigate the physiological responses of larch trees growing on permafrost to variability in precipitation and permafrost depth associated with regional temperature and precipitation changes. Tree-ring width, delta C-13 and delta O-18 in wood and cellulose were measured in larch (Larix cajanderi Mayr.) samples from northeastern Yakutia (69 degrees N, 148 degrees E) for the period from 1945 to 2004 and used for comparisons with modeled delta C-13 and delta O-18 data. Mechanistic models that quantify physical and biochemical fractionation processes leading to oxygen isotope variation in organic matter are used to identify source water for trees growing on permafrost in Siberia. These models allowed us to investigate the influence of a variety of climatic factors on Siberian forest ecosystem water relations that impact isotope fractionation. Based on delta C-13 and delta O-18 in tree wood and cellulose measurements as well as outputs from different eco-physiological models, we assume that larch trees from northeastern Yakutia can have limited access to the additional thawed permafrost water during dry summer periods. (C) 2015 Elsevier GmbH. All rights reserved.

WOS,
Смотреть статью

Держатели документа:
Univ Bern, Inst Geol Sci, Dendrolab Ch, CH-3012 Bern, Switzerland.
Swiss Fed Inst Technol, Dept Environm Sci, CH-8092 Zurich, Switzerland.
VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
INRA, UMR ISPA 1391, F-33140 Villenave Dornon, France.
CEA Saclay, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Univ Bern, Inst Phys, Climate & Environm Phys, CH-3012 Bern, Switzerland.
Univ Bern, Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland.
Southern Oregon Univ, Dept Biol, Ashland, OR 97520 USA.

Доп.точки доступа:
Churakova, O. V.; Shashkin, Aleksandr V.; Siegwolf, Rolf T. W.; Spahni, Renato; Launois, Thomas; Saurer, Matthias; Bryukhanova, Marina V.; Benkova, Anna V.; Kuptsova, Anna V.; Peylin, Philippe; Vaganov, Eugene A.; Masson-Delmotte, Valerie; Roden, John

    Variability and differentiation of Larix cajanderi, L. dahurica and L. sibirica on shape of cone scales
/ V. P. Vetrova, N. V. Sinelnikova, A. P. Barchenkov // Turczaninowia. - 2018. - Vol. 21, Is. 2. - С. 86-100, DOI 10.14258/turczaninowia.21.2.10 . - ISSN 1560-7259

Кл.слова (ненормированные):
Cone scales -- Differentiation -- Geometric morphometrics -- Larix -- North Asia -- Variability

Аннотация: Intra- A nd interspecifc variability of three larch species of North Asia (Larix cajanderi, L. dahurica, L. sibirica) has been analyzed based on the shape of cone scales, using geometric morphometrics. L. cajanderi was represented by nine population samples of cones from three regions: Kamchatka, Yakutia, and Magadan Oblast. L. cajanderi cones were compared with L. dahurica cones from Evenkia and the Transbaikal region. Samples of L. sibirica cones were collected in three regions of South Siberia. Patterns of shape variation of cone-scales were investigated using principal component analysis (PCA) of partial warps of scales. The PCA-values (relative warps) were used as the features of shape of scales in conducting discriminant analysis. The study revealed similar main trends in variability of cone scale shapes, suggesting parallel variability of generative organs in Larix species of North Asia. The Mahalonobis (D2) distances calculated from relative warps of scales vary from 14.7 to 25 when comparing the populations of L. sibirica and L. cajanderi. Between populations of closely related species, L. dahurica and L. cajanderi, D2 vary from 6.4 to 15.5. Between populations of L. sibirica and L. dahurica, D2 is 13.8-21.4 for the sample L. dahurica from Evenkia and 7.6-12.2 for the Transbaikal one. The shape of the cone scales of L. cajanderi differs from that of L. dahurica, proving that this is an independent species. The high degree of differentiation between the populations of L. cajanderi in Yakutia and Kamchatka indicates that they may belong to different geographical races. © 2018 Altai State University. All rights reserved.

Scopus,
Смотреть статью

Держатели документа:
Kamchatka Branch, Pacifc Geographical Institute, Far East Branch, Russian Academy of Sciences, Rybakov str., 19-a, Petropavlovsk-Kamchatsky, Russian Federation
Institute of Biological Problems of the North, Far-Eastern Branch, Russian Academy of Sciences, Portovaya str., 18, Magadan, Russian Federation
V. N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50/28, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Vetrova, V. P.; Sinelnikova, N. V.; Barchenkov, A. P.

    Siberian tree-ring and stable isotope proxies as indicators of temperature and moisture changes after major stratospheric volcanic eruptions
/ O. V. Churakova [et al.] // Clim. Past. - 2019. - Vol. 15, Is. 2. - P685-700, DOI 10.5194/cp-15-685-2019. - Cited References:91. - This work was supported by a Marie Curie International Incoming Fellowship (EU_ISOTREC 235122), a Reintegration Marie Curie Fellowship (909122), and grants to the following: a UFZ scholarship (2006), RFBR (09-05-98015_r_sibir_a), granted to Olga V. Churakova (Sidorova); SNSF to Matthias Saurer (200021_ 121838/1); an Era. Net RusPlus project granted to Markus Stoffel (SNF IZRPZ0_ 164735); RFBR (no. 16-55-76012 Era_ a) granted to Eugene A. Vaganov; and a project grant to Vladimir S. Myglan RNF, Russian Scientific Fund (no. 15-14-30011). Alexander V. Kirdyanov was supported by the Ministry of Education and Science of the Russian Federation (no. 5.3508.2017/4.6) and RSF (no. 14-14-00295). We acknowledge a Scientific School (3297.2014.4) grant to Eugene A. Vaganov, US National Science Foundation (NSF) grants (no. 9413327, no. 970966, no. 0308525) to Malcolm K. Hughes, and US CRDF grant no. RC1-279 to Malcolm K. Hughes and Eugene A. Vaganov. We thank Tatjana Boettger for her support and access to the stable isotope facilities within the framework of the UFZ Haale/Saale scholarship 2006 and stable isotope facilities at the Paul Scherrer Institute (PSI), Switzerland; we thank Anne Verstege and Daniel Nievergelt for their help with sample preparation for the MXD and Paolo Cherubini for providing lab access at the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL). . - ISSN 1814-9324. - ISSN 1814-9332
РУБ Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: Stratospheric volcanic eruptions have far-reaching impacts on global climate and society. Tree rings can provide valuable climatic information on these impacts across different spatial and temporal scales. To detect temperature and hydroclimatic changes after strong stratospheric Common Era (CE) volcanic eruptions for the last 1500 years (535 CE unknown, 540 CE unknown, 1257 CE Samalas, 1640 CE Parker, 1815 CE Tambora, and 1991 CE Pinatubo), we measured and analyzed tree-ring width (TRW), maximum late-wood density (MXD), cell wall thickness (CWT), and delta C-13 and delta O-18 in tree-ring cellulose chronologies of climate-sensitive larch trees from three different Siberian regions (northeastern Yakutia - YAK, eastern Taimyr - TAY, and Russian Altai - ALT). All tree-ring proxies proved to encode a significant and specific climatic signal of the growing season. Our findings suggest that TRW, MXD, and CWT show strong negative summer air temperature anomalies in 536, 541-542, and 1258-1259 at all studied regions. Based on delta C-13, 536 was extremely humid at YAK, as was 537-538 in TAY. No extreme hydroclimatic anomalies occurred in Siberia after the volcanic eruptions in 1640, 1815, and 1991, except for 1817 at ALT. The signal stored in delta O-18 indicated significantly lower summer sunshine duration in 542 and 1258-1259 at YAK and 536 at ALT. Our results show that trees growing at YAK and ALT mainly responded the first year after the eruptions, whereas at TAY, the growth response occurred after 2 years. The fact that differences exist in climate responses to volcanic eruptions - both in space and time - underlines the added value of a multiple tree-ring proxy assessment. As such, the various indicators used clearly help to provide a more realistic picture of the impact of volcanic eruption on past climate dynamics, which is fundamental for an improved understanding of climate dynamics, but also for the validation of global climate models.

WOS,
Смотреть статью,
Scopus

Держатели документа:
Univ Geneva, Inst Environm Sci, 66 Bvd Carl Vogt, CH-1205 Geneva, Switzerland.
Siberian Fed Univ, Inst Ecol & Geog, Svobodny Pr 79, Krasnoyarsk 660041, Russia.
Swiss Fed Inst Forest Snow & Landscape Res WSL, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland.
Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
Univ Blaise Pascal, Geolab, CNRS, UMR 6042, 4 Rue Ledru, F-63057 Clermont Ferrand, France.
Siberian Fed Univ, Inst Humanities, Svobodny Pr 82, Krasnoyarsk 660041, Russia.
RAS, VN Sukachev Inst Forest, SB, Fed Res Ctr Krasnoyarsk Sci Ctr, Akademgorodok 50,Bldg 28, Krasnoyarsk 660036, Russia.
Univ Cambridge, Dept Geog, Downing Pl, Cambridge CB2 3EN, England.
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Svobodny Pr 79, Krasnoyarsk 660041, Russia.
Univ Arizona, Lab Tree Ring Res, 1215 E Lowell St, Tucson, AZ 85721 USA.
Siberian Fed Univ, Rectorate, Svobodny Pr 79-10, Krasnoyarsk 660041, Russia.
Univ Geneva, Dept Earth Sci, 13 Rue Maraichers, CH-1205 Geneva, Switzerland.
Univ Geneva, Dept FA Forel Environm & Aquat Sci, 66 Blvd Carl Vogt, CH-1205 Geneva, Switzerland.

Доп.точки доступа:
Churakova, O. V.; Fonti, Marina V.; Saurer, Matthias; Guillet, Sebastien; Corona, Christophe; Fonti, Patrick; Myglan, Vladimir S.; Kirdyanov, Alexander V.; Naumova, Oksana V.; Ovchinnikov, Dmitriy V.; Shashkin, Alexander V.; Panyushkina, Irina P.; Buntgen, Ulf; Hughes, Malcolm K.; Vaganov, Eugene A.; Siegwolf, Rolf T. W.; Stoffel, Markus; Churakova, Olga; Marie Curie International Incoming Fellowship [EU_ISOTREC 235122]; Reintegration Marie Curie Fellowship [909122]; RFBR [16-55-76012, 09-05-98015_r_sibir_a]; SNSF [200021_ 121838/1, SNF IZRPZ0_ 164735]; Russian Scientific Fund [15-14-30011]; Ministry of Education and Science of the Russian Federation [5.3508.2017/4.6]; RSF [14-14-00295, 3297.2014.4]; US National Science Foundation (NSF) [9413327, 970966, 0308525]; US CRDF [RC1-279]

    Intraseasonal Dynamics of River Discharge and Burned Forest Areas in Siberia
/ E. I. Ponomarev, T. V. Ponomareva, A. S. Prokushkin // Water. - 2019. - Vol. 11, Is. 6, DOI 10.3390/w11061146. - Cited References:37. - This research was funded by the Russian Foundation for Basic Research (RFBR) grant number 17-04-00589 "Radiometric method for quantitative analysis of soils structure organization", RFBR and Government of the Krasnoyarsk krai, and Krasnoyarsk krai Foundation for Research and Development Support, grant number 18-41-242003 "Modeling and satellite monitoring of effects from thermal anomalies of the underlying surface in the seasonally thawed soil layer of the permafrost zone of Siberia" and grant number 18-05-60203-Arktika "Landscape and hydrobiological controls on the transport of terrigenic carbon to the Arctic Ocean". . - ISSN 2073-4441
РУБ Water Resources

Аннотация: This study demonstrates the dependence between the forest burning rates and abnormal decrease in Siberian river discharges under the conditions of the permafrost zone. Our study area is in Central Siberia and Eastern Siberia/Yakutia. Four rivers (Podkamennaya Tunguska, Lower Tunguska, Aldan, and Viluy) were selected for the study. We analyzed the long-term and seasonal variation of river discharges (archive of The Global Runoff Data Centre for 1939-2015) together with the forest burning dynamics within the river basins (archive of Sukachev Institute of Forest for 1996-2015). We compared the discharges per year with the 77-year average value. Abnormally low levels of discharge constituted 58-78% of the averaged annual rate. An analysis of available chronologies of extreme fire events and relative burned areas (RBAs) showed a high correlation with intra-seasonal data on the runoff minima. The most significant response of river discharges to the wildfire effect was shown for the late summer/autumn season after extreme wildfires during the summer period. The deficit of the runoff was not explained by a low precipitation. Late summer and autumn anomalies of discharge were typical (r = -0.57...-0.77, p < 0.05) for rivers of Central Siberia in seasons of extreme forest burning. The correlation was lower for rivers of Eastern Siberia/Yakutia.

WOS,
Смотреть статью,
Scopus

Держатели документа:
RAS, Fed Res Ctr, VN Sukachev Inst Forest SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Ecol & Geog, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Ponomarev, Evgenii I.; Ponomareva, Tatiana V.; Prokushkin, Anatoly S.; Russian Foundation for Basic Research (RFBR) [17-04-00589]; Krasnoyarsk krai Foundation for Research and Development Support [18-41-242003, 18-05-60203-Arktika]; Government of the Krasnoyarsk krai

    WATER-RETAINING CAPACITY OF NEEDLES IN POPULATIONS OF THE MAIN FOREST-FORMING CONIFEROUS SPECIES IN THE FORESTS OF THE TAIGA ZONE OF SIBERIA
/ N. A. Tikhonova, I. V. Tikhonova // Lesnoy Zh. - 2019. - Is. 5. - С. 83-94, DOI 10.17238/issn0536-1036.2019.5.83. - Cited References:20. - The research is carried out within the framework of the budget project No. 0346-2016-0301 of the West-Siberian Branch of Sukachev Institute of Forest SB RAS and the Federal Research Center "Krasnoyarsk Science Center SB RAS" with the partial financial support from the Russian Foundation for Basic Research, the Government of Krasnoyarsk Territory, and the Krasnoyarsk Regional Fund of Science in the framework of the research project No. 18-44-240002. . - ISSN 0536-1036
РУБ Forestry
Рубрики:
MORTALITY
   DROUGHT

Кл.слова (ненормированные):
forest-forming coniferous species -- mixed forests -- drought resistance -- Siberia

Аннотация: The limits of individual variation of trees by the water-retaining capacity of needles in populations of forest-forming coniferous species (Scots pine, Siberian pine, Siberian spruce and Siberian fir) growing in the conditions of the mountainous, middle and northern taiga of Central and Eastern Siberia were studied. It is found that among the compared evergreen species, Scots pine and Siberian pine are characterized by the highest intrapopulation variation in the rate of needles dehydration; Siberian spruce and Siberian fir are characterized by greater variability in the ability of needles to water absorption. However, in samples of the last two species, the share of trees with a low rate of water loss is quite large, even in wet habitats. In more drought-resistant pine species there is a smaller part of trees, which quickly evaporate moisture and have a high water capacity of needles. While a smaller part of trees of Siberian spruce and Siberian fir are less resistant to dehydration and differ by low water capacity of needles. While in Siberian spruce and Siberian fir a smaller part are trees less resistant to dehydration with low water capacity of needles. We revealed the significant differences between species in mixed stands and between geographic populations of species by water-retaining capacity of needles. The highest values of this indicator were obtained for Scots pine and Siberian spruce from Yakutia, as well as for old-growth trees of Siberian pine from the Western Sayan. The necessity of preserving old-growth stands and trees, characterized by the greatest drought resistance of needles, especially hygrophilous dark coniferous species in a changing climate is emphasized.The obtained data and correlations between the used features allow us to estimate one of the components of drought resistance of taiga populations of coniferous species and their intrapopulation diversity.

WOS,
Смотреть статью

Держатели документа:
Sukachev Inst Forest SB RAS, Biol, Akademgorodok 50-28, Krasnoyarsk 660036, Russia.
Krasnoyarsk Sci Ctr SB RAS, Fed Res Ctr, Sukachev Inst Forest SB RAS, West Siberian Branch,Biol, Ul Zhukovskogo 100-1, Novosibirsk 630082, Russia.

Доп.точки доступа:
Tikhonova, N. A.; Tikhonova, I., V; West-Siberian Branch of Sukachev Institute of Forest SB RAS [0346-2016-0301]; Federal Research Center "Krasnoyarsk Science Center SB RAS" from the Russian Foundation for Basic Research; Government of Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science in the framework of the research project [18-44-240002]