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

: материалы временных коллективов / A. S. Prokushkin [и др.] // Symptom of environmental change in Siberian permafrost region: proceedings of the International symposium of JSPS core to core program between Hokkaido university and Martin Luther university Halle-Wittenberg in 29-30 November 2005, Sapporo, Japan. - Sapporo : Hokkaido University Press, 2006. - С. 113-121. - Библиогр. в конце ст.

УДК

502

Аннотация: Terrestrial flux of DOC to stream is contributed from different sources of different qualities and quantities differing at different hydrological phases and seasons. To trace the share of every one of these fluxes is still required for further understanding of DOC production and mobilization in the permafrost affected ecosystem.

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

Доп.точки доступа:
Prokushkin, Anatoly Stanislavovich; Прокушкин, Анатолий Станиславович; Hobara, S.; Хобара С.; Tokaryeva, Irina Vladimirovna; Prokushkin, Stanislav Grigor'yevich; Прокушкин Станислав Григорьевич; Abaimov, Anatoly Platonovich; Абаимов Анатолий Платонович
Имеются экземпляры в отделах:
РСФ (05.12.2006г. (1 экз.) - Б.ц.) - свободны 1

: absracts / M. G. Kornilova [и др.] // Enviromis. International conference on enviromental observations, modelling and information systems, Tomsk, Russia, July 1-8, 2006: program and abstracts. - 2006. - С. 138-139
Аннотация: Results of Batrachium kauffmannii (Clerc) V. Krecz. cytoginetical studies from Yenisey river in region of radiactive impact of Mining-and-Chemical Combine (MCC) are presented. The samples were selected in area of water with maximym influence of wide spectrum of pollution: mouth of Tel' river (95km from Krasnoyarsk), Bol'shoy Balchug (97km from Krasnoyarsk), and Esaulovo as control (45 km from Krasnoyarsk higher in stream).

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

Доп.точки доступа:
Kornilova, M.G.; Корнилова М.Г.; Pimenov, Alexandr Vladimirovich; Пименов, Александр Владимирович; Sedel'nikova, Tamara Stanislavovna; Седельникова, Тамара Станиславовна; Muratova, Elena Nikolayevna; Муратова, Елена Николаевна
Имеются экземпляры в отделах:
РСФ (13.03.2008г. (1 экз.) - Б.ц.) - свободны 1

/ M. L. Bagard [et al.] // Geochim. Cosmochim. Acta. - 2013. - Vol. 114. - P169-187, DOI 10.1016/j.gca.2013.03.038. - Cited References: 104. - We thank T. Bullen and two anonymous reviewers for their thorough and constructive reviews and A. Jacobson for editorial handling. S. Gangloff is thanked for her assistance with Ca isotope chemistry and T. Perrone for his help in measuring Sr isotopes. This work was supported by the French INSU-CNRS program "EC2CO-Cytrix", and CNRS program "GDRI CAR-WET-SIB, ANR "Arctic Metals", programs of presidium UroRAS and RAS. It was also supported by the funding from the Region Alsace, France, and the CPER 2003-2013 "REALISE". MLB benefited the funding of a Ph.D. scholarship from the French Ministry of National Education and Research. This is an EOST-LHyGeS contribution. . - 19. - ISSN 0016-7037РУБ Geochemistry & Geophysics

Аннотация: Stable Ca and radiogenic Sr isotope compositions were measured in different compartments (stream water, soil solutions, rocks, soils and soil leachates and vegetation) of a small permafrost-dominated watershed in the Central Siberian Plateau. The Sr and Ca in the area are supplied by basalt weathering and atmospheric depositions, which significantly impact the Sr isotopic compositions. Only vegetation significantly fractionates the calcium isotopes within the watershed. These fractionations occur during Ca uptake by roots and along the transpiration stream within the larch trees and are hypothesised to be the result of chromatographic processes and Ca oxalate crystallisations during Ca circulation or storage within plant organs. Biomass degradation significantly influences the Ca isotopic compositions of soil solutions and soil leachates via the release of light Ca, and organic and organo-mineral colloids are thought to affect the Ca isotopic compositions of soil solutions by preferential scavenging of Ca-40. The imprint of organic matter degradation on the delta Ca-44/40 of soil solutions is much more significant for the warmer south-facing slope of the watershed than for the shallow and cold soil active layer of the north-facing slope. As a result, the available stock of biomass and the decomposition rates appear to be critical parameters that regulate the impact of vegetation on the soil-water system in permafrost areas. Finally, the obtained delta Ca-44/40 patterns contrast with those described for permafrost-free environments with a much lower delta Ca-44/40 fractionation factor between soils and plants, suggesting specific features of organic matter decomposition in permafrost environments. The biologically induced Ca isotopic fractionation observed at the soil profile scale is not pronounced at the scale of the streams and large rivers in which the delta Ca-44/40 signature may be controlled by the heterogeneity of lithological sources. (C) 2013 Elsevier Ltd. All rights reserved.

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Держатели документа:
[Bagard, Marie-Laure
Schmitt, Anne-Desiree
Chabaux, Francois
Stille, Peter] Univ Strasbourg, F-67084 Strasbourg, France
[Bagard, Marie-Laure
Schmitt, Anne-Desiree
Chabaux, Francois
Stille, Peter] CNRS, EOST, LHyGeS, F-67084 Strasbourg, France
[Schmitt, Anne-Desiree] Univ Franche Comte, CNRS, UMR 6249, F-25030 Besancon, France
[Pokrovsky, Oleg S.
Viers, Jerome] Univ Toulouse 3, CNRS, UMR 5563, Geosci & Environm Toulouse, F-31400 Toulouse, France
[Pokrovsky, Oleg S.] Russian Acad Sci, Inst Ecol Problems North, Arkhangelsk, Russia
[Labolle, Francois] Univ Strasbourg, Inst Zool & Biol Gen, F-67000 Strasbourg, France
[Prokushkin, Anatoly S.] VN Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28

Доп.точки доступа:
Bagard, M.L.; Schmitt, A.D.; Chabaux, F...; Pokrovsky, O.S.; Viers, J...; Stille, P...; Labolle, F...; Prokushkin, A.S.

/ A. V. Kirdyanov, A. S. Prokushkin, M. A. Tabakova // Dendrochronologia. - 2013. - Vol. 31, Is. 2. - P114-119, DOI 10.1016/j.dendro.2012.10.003. - Cited References: 54. - The study was financed by Russian Foundation for Basic Research (12-04-00542), Swiss NSF (SCOPES IZ73Z0_128035) and the Grant of the Government of RF for outstanding scientists No. 11.G34.31.0014 to Prof. E.-D.Schulze. Work of TMA was also supported by the Grant of the President of RF for Young Scientists (MK-5498.2012.4). . - 6. - ISSN 1125-7865РУБ Plant Sciences + Forestry

Аннотация: While the forest-tundra zone in Siberia, Russia has been dendroclimatologically well-studied in recent decades, much less emphasis has been given to a wide belt of northern taiga larch forests located to the south. In this study, climate and local site conditions are explored to trace their influence on radial growth of Gmelin larch (Larix gmelinii (Rupr.) Rupr.) trees developed on permafrost soils in the northern taiga. Three dendrochronological sites characterized by great differences in thermo-hydrological regime of soils were established along a short (ca. 100 m long) transect: on a river bank (RB), at riparian zone of a stream (RZ) and on a terrace (TER). Comparative analysis of the rate and year-to-year dynamics of tree radial growth among sites revealed considerable difference in both raw and standardized tree-ring width (TRW) chronologies obtained for the RZ site, characterized by shallow soil active layer depth and saturated soils. Results of dendroclimatic analysis indicated that tree-ring growth at all the sites is mostly defined by climatic conditions of a previous year and precipitation has stronger effect on TRW chronologies in comparison to the air temperatures. Remarkably, a great difference in the climatic response of TRW chronologies has been obtained for trees growing within a very short distance from each other. The positive relation of tree-ring growth with precipitation, and negative to temperature was observed in the dry site RB. In contrary, precipitation negatively and temperature positively influenced tree radial growth of larch at the water saturated RZ. Thus, a complicate response of northern Siberian larch forest productivity to the possible climate changes is expected due to great mosaic of site conditions and variability of environmental factors controlling tree-ring growth at different sites. Our study demonstrates the new possibilities for the future dendroclimatic research in the region, as various climatic parameters can be reconstructed from tree-ring chronologies obtained for different sites. (c) 2013 Elsevier GmbH. All rights reserved.

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Держатели документа:
[Kirdyanov, Alexander V.
Prokushkin, Anatoly S.] SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Tabakova, Maria A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Kirdyanov, A.V.; Prokushkin, A.S.; Tabakova, M.A.

[Text] / H. . Flessa [et al.] // Glob. Change Biol. - 2008. - Vol. 14, Is. 9. - P2040-2056, DOI 10.1111/j.1365-2486.2008.01633.x. - Cited References: 68 . - 17. - ISSN 1354-1013РУБ Biodiversity Conservation + Ecology + Environmental Sciences

Аннотация: Terrestrial ecosystems in northern high latitudes exchange large amounts of methane (CH4) with the atmosphere. Climate warming could have a great impact on CH4 exchange, in particular in regions where degradation of permafrost is induced. In order to improve the understanding of the present and future methane dynamics in permafrost regions, we studied CH4 fluxes of typical landscape structures in a small catchment in the forest tundra ecotone in northern Siberia. Gas fluxes were measured using a closed-chamber technique from August to November 2003 and from August 2006 to July 2007 on tree-covered mineral soils with and without permafrost, on a frozen bog plateau, and on a thermokarst pond. For areal integration of the CH4 fluxes, we combined field observations and classification of functional landscape structures based on a high-resolution Quickbird satellite image. All mineral soils were net sinks of atmospheric CH4. The magnitude of annual CH4 uptake was higher for soils without permafrost (1.19 kg CH4 ha(-1) yr(-1)) than for soils with permafrost (0.37 kg CH4 ha(-1) yr(-1)). In well-drained soils, significant CH4 uptake occurred even after the onset of ground frost. Bog plateaux, which stored large amounts of frozen organic carbon, were also a net sink of atmospheric CH4 (0.38 kg CH4 ha(-1) yr(-1)). Thermokarst ponds, which developed from permafrost collapse in bog plateaux, were hot spots of CH4 emission (approximately 200 kg CH4 ha(-1) yr(-1)). Despite the low area coverage of thermokarst ponds (only 2.1% of the total catchment area), emissions from these sites resulted in a mean catchment CH4 emission of 3.8 kg CH4 ha(-1) yr(-1). Export of dissolved CH4 with stream water was insignificant. The results suggest that mineral soils and bog plateaux in this region will respond differently to increasing temperatures and associated permafrost degradation. Net uptake of atmospheric CH4 in mineral soils is expected to gradually increase with increasing active layer depth and soil drainage. Changes in bog plateaux will probably be much more rapid and drastic. Permafrost collapse in frozen bog plateaux would result in high CH4 emissions that act as positive feedback to climate warming.

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[Flessa, Heiner] Univ Gottingen, Buesgen Inst, D-37077 Gottingen, Germany
[Rodionov, Andrej] Univ Cottbus, Chair Soil Protect & Recultivat, D-03046 Cottbus, Germany
[Rodionov, Andrej
Guggenberger, Georg] Univ Halle Wittenberg, Inst Agr & Nutr Sci, D-06108 Halle, Germany
[Fuchs, Hans
Magdon, Paul] Univ Gottingen, Inst Forest Management, D-37077 Gottingen, Germany
[Shibistova, Olga
Zrazhevskaya, Galina
Mikheyeva, Natalia] SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Kasansky, Oleg A.] SB RAS, Permafrost Inst Yakutsk, Field Stn Igarka, Igarka 663200, Russia
[Blodau, Christian] Univ Bayreuth, Dept Hydrol, D-95440 Bayreuth, Germany

Доп.точки доступа:
Flessa, H...; Rodionov, A...; Guggenberger, G...; Fuchs, H...; Magdon, P...; Shibistova, O...; Zrazhevskaya, G...; Mikheyeva, N...; Kasansky, O.A.; Blodau, C...

[Text] / G. . Guggenberger [et al.] // Glob. Change Biol. - 2008. - Vol. 14, Is. 6. - P1367-1381, DOI 10.1111/j.1365-2486.2008.01568.x. - Cited References: 72 . - 15. - ISSN 1354-1013РУБ Biodiversity Conservation + Ecology + Environmental Sciences

Аннотация: Boreal permafrost soils store large amounts of organic carbon (OC). Parts of this carbon (C) might be black carbon (BC) generated during vegetation fires. Rising temperature and permafrost degradation is expected to have different consequences for OC and BC, because BC is considered to be a refractory subfraction of soil organic matter. To get some insight into stocks, variability, and characteristics of BC in permafrost soils, we estimated the benzene polycarboxylic acid (BPCA) method-specific composition and storage of BC, i.e. BPCA-BC, in a 0.44 km(2)-sized catchment at the forest tundra ecotone in northern Siberia. Furthermore, we assessed the BPCA-BC export with the stream draining the catchment. The catchment is composed of various landscape units with south-southwest (SSW) exposed mineral soils characterized by thick active layer or lacking permafrost, north-northeast (NNE) faced mineral soils with thin active layer, and permafrost-affected raised bogs in plateau positions showing in part thermokarst formation. There were indications of vegetation fires at all landscape units. BC was ubiquitous in the catchment soils and BPCA-BC amounted to 0.6-3.0% of OC. This corresponded to a BC storage of 22-3440 g m(-2). The relative contribution of BPCA-BC to OC, as well as the absolute stocks of BPCA-BC were largest in the intact bogs with a shallow active layer followed by mineral soils of the NNE aspects. In both landscape units, a large proportion of BPCA-BC was stored within the permafrost. In contrast, mineral soils with thick active layer or lacking permafrost and organic soils subjected to thermokarst formation stored less BPCA-BC. Permafrost is, hence, not only a crucial factor in the storage of OC but also of BC. In the stream water BPCA-BC amounted on an average to 3.9% of OC, and a yearly export of 0.10 g BPCA-BC m(-2) was calculated, most of it occurring during the period of snow melt with dominance of surface flow. This suggests that BC mobility in dissolved and colloidal phase is an important pathway of BC export from the catchment. Such a transport mechanism may explain the high BC concentrations found in sediments of the Arctic Ocean.

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[Guggenberger, Georg
Rodionov, Andrej
Grabe, Matthias] Univ Halle Wittenberg, Inst Agr & Nutr Sci, D-06108 Halle, Germany
[Rodionov, Andrej] Brandenburg Tech Univ Cottbus, Chair Soil Protect & Recultivat, D-03013 Cottbus, Germany
[Shibistova, Olga
Mikheyeva, Natalia
Zrazhevskaya, Galina] RAS, VN Sukachev Inst Forest, Akademgorodok, Krasnoyarsk 660036, Russia
[Grabe, Matthias] Max Planck Inst Biogeochem, D-07745 Jena, Germany
[Kasansky, Oleg A.] RAS, SB, Field Stn Igarka, Permafrost Inst Yakutsk, Igarka 663200, Russia
[Fuchs, Hans] Univ Gottingen, Inst Forest Management & Yield Sci, D-37077 Gottingen, Germany
[Flessa, Heiner] Univ Gottingen, Inst Soil Sci & Forest Nutr, D-37077 Gottingen, Germany

Доп.точки доступа:
Guggenberger, G...; Rodionov, A...; Shibistova, O...; Grabe, M...; Kasansky, O.A.; Fuchs, H...; Mikheyeva, N...; Zrazhevskaya, G...; Flessa, H...

[Text] / A. S. Prokushkin [et al.] // Glob. Biogeochem. Cycle. - 2007. - Vol. 21, Is. 4. - Ст. GB4003, DOI 10.1029/2007GB002938. - Cited References: 39 . - 12. - ISSN 0886-6236РУБ Environmental Sciences + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: Terrestrial and aquatic dissolved organic matter (DOM) was characterized to trace the likely processes of DOM formation and stream export in a permafrost-dominated watershed in central Siberia. Stream samples were collected in spring (May-June 2003) and summer (July-August 2003) at both low flow and stormflow. Dissolved organic matter was analyzed by pyrolysis/gas chromatography/mass spectrometry, and identified pyrolysis products were simultaneously analyzed for compound-specific isotope ratios by isotope ratio mass spectrometry. Pyrograms of terrestrial and stream DOM contained a similar series of pyrolysis products, suggesting a terrestrial origin for DOM in the small stream draining our study catchment. However, despite the overall similarity of chemical composition of stream DOM at different seasons, we also observed distinct differences in isotopic fingerprint between seasons and hydrologic phases ( stormflow versus low flow). This variation appears to be due to the changing origin of stream DOM from different soil layers and the catchment sources following permafrost thawing during the frost-free period. In general, chemical and isotopic composition of stream DOM was similar to DOM produced in soils of colder north facing slopes ( P 0.01) with a shallow active layer. South facing slopes with deeper active layers produce little DOM that enters the stream, suggesting that DOM produced in the active layer is retained and stabilized in underlying, unfrozen mineral soils. Climate change that results in additional seasonal thawing of permafrost-dominated landscapes will decrease the amount of DOM exported to riverine systems and change its chemical composition.

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Держатели документа:
Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
Max Planck Inst Biogeochem, D-07745 Jena, Germany
Univ New Hampshire, Durham, NH 03824 USA

Доп.точки доступа:
Prokushkin, A.S.; Gleixner, G...; McDowell, W.H.; Ruehlow, S...; Schulze, E.D.

[Text] / O. S. Pokrovsky [et al.] // Chem. Geol. - 2013. - Vol. 355. - P103-116, DOI 10.1016/j.chemgeo.2013.07.016. - Cited References: 65. - We are grateful to Associate Editor Carla Koretsky for her significant efforts in improving this manuscript and two anonymous reviewers for their helpful and constructive comments. This work was supported by the BIO-GEO-CLIM Mega-grant of the Ministry of Education and Science of the Russian Federation and Tomsk State University (No 14.B25.31.0001), ANR "Arctic Metals", GDRI CAR WET SIB and LIA LEAGE International Laboratories, Grants RFFI 10-05-92513, and 11-04-10056, the CRDF RUG1-2980-KR-10 and Programs of Presidium RAS (No 12-P-5-1021) and UrORAS (No 12-U-5-1034). . - 14. - ISSN 0009-2541РУБ Geochemistry & Geophysics

Аннотация: This work is devoted to the characterization of natural mechanisms of silicon isotope fractionation within Siberian watersheds and predicting the climate warming effect on Si fluxes from the land to the Arctic Ocean. To unravel the different sources of silica generated by basalt weathering in Central Siberia under permafrost and larch deciduous forest conditions, we measured the Si isotopic composition of large and small rivers, surface flow, interstitial soil solutions, plant litter and soils. The average annual discharge-weighted delta Si-30 values of the second largest tributary of the Yenissei River, Nyzhnaya Tunguska and its main northern tributary (Kochechum) are equal to 1.08 +/- 0.10% and 1.67 +/- 0.15%, respectively, while their average annual Si concentrations are very similar (3.46 and 3.50 mg/L, respectively). During summer baseflow, the dissolved Si isotope composition of both large rivers and a small stream ranges between 1.5 and 2.5%. This is much heavier compared to the source basaltic rocks but similar to the fresh litter of Larix gmelinii, the dominating tree species in this region. It could be consistent with litter degradation in the uppermost soil horizons being the dominant source of solutes annually exported by Central Siberian rivers. During spring flood, accounting for 60-80% of annual Si flux, the delta Si-30 of the large rivers' dissolved load decreases by 1-1.5%, thus approaching the value of the bedrock and the silicate suspended matter of the rivers (RSM). This may reflect the dissolution of the silicate suspended load at high water/mineral ratio. The winter delta Si-30 values of the large river dissolved load range between 1.0 and 2.5%. During this period, contributing to <= 10% of the annual Si chemical flux, the interaction between bedrock (porous tuffs) and deep ground waters occurs at a very high solid/solution ratio, leading to the precipitation of isotopically light secondary minerals and enrichment of Si-30 in the fluids that feed the river through the unfrozen flowpaths. Results of this study imply that more than a half of the silica transported by Siberian rivers may transit through the biogenic pool and that, like in other stable basaltic regions, bedrock-water interactions account for a lesser fraction of the silica flux. As a result of projected future climate warming and weathering increases in boreal regions, the delta Si-30 isotopic composition of large Siberian rivers is likely to shift towards less positive values. (c) 2013 Elsevier B.V. All rights reserved.

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Держатели документа:
[Pokrovsky, O. S.
Schott, J.
Viers, J.] Univ Toulouse, GET CNRS UMR 5563, F-31400 Toulouse, France
[Pokrovsky, O. S.] UroRAS, Inst Ecol Problems North, Arkhangelsk, Russia
[Reynolds, B. C.] Swiss Fed Inst Technol, Inst Geochem & Petr, Zurich, Switzerland
[Prokushkin, A. S.] RAS, Inst Forest, Siberian Branch, Krasnoyarsk, Russia

Доп.точки доступа:
Pokrovsky, O.S.; Reynolds, B.C.; Prokushkin, A. S.; Прокушкин, Анатолий Станиславович; Schott, J.; Viers, J.; BIO-GEO-CLIM Mega-grant of the Ministry of Education and Science of the Russian Federation; Tomsk State University [14.B25.31.0001]; ANR "Arctic Metals"; GDRI CAR WET SIB and LIA LEAGE International Laboratories [RFFI 10-05-92513, 11-04-10056]; CRDF [RUG1-2980-KR-10]; Program of Presidium RAS [12-P-5-1021]; Program of Presidium UrORAS [12-U-5-1034]

[Text] / L. M. Parham [et al.] // Biogeochemistry. - 2013. - Vol. 116, Is. 01.03.2014. - P55-68, DOI 10.1007/s10533-013-9922-5. - Cited References: 33. - This work was supported by joint US-Russia program between the RFBR and CRDF through Grants 10-05-92513 and RUG1-2980-KR-10, ANR, GDRI "CAR WET SIB", Grants RFBR-CNRS 08-04-92495 and BIO-GEO-CLIM of MinObrNauki and BIO-GEO-CLIM of Russian Ministry of Science and Education (14.B25.31.0001). . - 14. - ISSN 0168-2563РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: Stream chemistry in permafrost regions is regulated by a variety of drivers that affect hydrologic flowpaths and watershed carbon and nutrient dynamics. Here we examine the extent to which seasonal dynamics of soil active layer thickness and wildfires regulate solute concentration in streams of the continuous permafrost region of the Central Siberian Plateau. Samples were collected from 2006 to 2012 during the frost-free season (May-September) from sixteen watersheds with fire histories ranging from 3 to 120 years. The influence of permafrost was evident through significantly higher dissolved organic carbon (DOC) concentrations in the spring, when only the organic soil horizon was accessible to runoff. As the active layer deepened through the growing season, water was routed deeper through the underlying mineral horizon where DOC underwent adsorption and concentrations decreased. In contrast, mean concentrations of major cations (Ca2+ > Na+ > Mg2+ > K+) were significantly higher in the summer, when contact with mineral horizons in the active zone provided a source of cations. Wildfire caused significantly lower concentrations of DOC in more recently burned watersheds, due to removal of a source of DOC through combustion of the organic layer. An opposite trend was observed for dissolved inorganic carbon and major cations in more recently burned watersheds. There was also indication of talik presence in three of the larger watersheds evidenced by Cl- concentrations that were ten times higher than those of other watersheds. Because climate change affects both fire recurrence intervals as well as rates of permafrost degradation, delineating their combined effects on solute concentration allows forecasting of the evolution of biogeochemical cycles in this region in the future.

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[Parham, Lucy M.
McDowell, William H.] Univ New Hampshire, Dept Nat Resources & Environm, Coll Life Sci & Agr, Durham, NH 03824 USA
[Prokushkin, Anatoly S.
Titov, Sergey V.] VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Pokrovsky, Oleg. S.] Univ Toulouse, CNRS IRD OMP, Geosci Environm Toulouse, F-31400 Toulouse, France
[Grekova, Ekaterina] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Shirokova, Liudmila S.] UroRAS, Inst Ecol Problems North, Arkhangelsk, Russia

Доп.точки доступа:
Parham, L.M.; Prokushkin, A.S.; Pokrovsky, O.S.; Titov, S.V.; Grekova, E...; Shirokova, L.S.; McDowell, W.H.; RFBR; CRDF [10-05-92513, RUG1-2980-KR-10]; ANR; GDRI "CAR WET SIB"; MinObrNauki [RFBR-CNRS 08-04-92495, BIO-GEO-CLIM]; BIO-GEO-CLIM of Russian Ministry of Science and Education [14.B25.31.0001]

/ A. Onuchin [et al.] // IAHS-AISH Publication. - 2009. - Vol. 331: Symposium JS.4 at the Joint Convention of the International Association of Hydrological Sciences, IAHS and the International Association of Hydrogeologists, IAH (6 September 2009 through 12 September 2009, Hyderabad) Conference code: 83573. - P163-170 . -
Аннотация: River flow is vitally important to many human activities. River flow is influenced by climatic and land-cover changes. Land-use practices have a significant effect on water flow and quality. Land use can change surface runoff, which in turn can be used as an environmental indicator of a land use level of sustamability. Along with the regional climate, hydrological processes occurring in river basins in Siberia and mountainous Kyrgyzia are controlled by forest logging and afforestation. The method used to analyse annual river flow genesis to date allowed the onset of, and assessment of, the level of human activities in the watersheds. Moreover, river flow genesis can be used in land use decision-making. River flow reflects all watershed changes, which can have opposite effects, thus compensating for each other. This study confirmed that river flow changes in time, thus reflecting land cover changes in watersheds. Copyright В© 2009 IAHS Press.

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Держатели документа:
V. N. Sukachev Institute of Forest Siberian Branch, Russian Academy of Sciences, 660036, Academgorodok, Krasnoyarsk, Russian Federation
P. A. Gan Institute of Forest and Nut Plantation, Kyrgyzian Academy of Sciences, Kargachevaya rosha, 15, 720015, Bishkek, Kyrgyzstan

Доп.точки доступа:
Onuchin, A.; Burenina, T.; Gaparov, K.; Ziryukina, N.

/ M. Korets, A. Onuchin // IAHS-AISH Publication. - 2009. - Vol. 331: Symposium JS.4 at the Joint Convention of the International Association of Hydrological Sciences, IAHS and the International Association of Hydrogeologists, IAH (6 September 2009 through 12 September 2009, Hyderabad) Conference code: 83573. - P510-513 . -
Аннотация: Forest areas can intercept surface runoff from upslope bare areas and transfer it to interflow. Therefore, planting protective forests along the banks of rivers, reservoirs, and lakes preserves natural water sources from pollution. Depending on the particular landscape conditions, the streamside forest shelterbelt (SFS) width is often either wider or narrower than the ecologically substantiated width. As a result, either water quality worsens or the ecologically unjustified prohibition of forest use leads to economic losses. The assessment of SFS width using GIS technologies allows considerable simplification of evaluation procedures and their application in practice. DEM processing is integrated into most modern GIS software packages. For example, the popular ESRI ArcGIS package with its Spatial Analyst module provides extra options for calculating a series of relief-based hydrological features, which include calculation procedures for surface flow direction, length of flow-producing slopes and surface flow accumulations. Two algorithms for GIS-based SFS construction were tested for several rivers of the Yenisei basin and Krasnoyarsk Reservoir, Siberia. The first algorithm is technically simple and based on empirical equations of runoff slope length, slope steepness and soil infiltration. The second one includes a three-dimensional flow accumulation procedure and thus it is more sensitive to real surface structure. Both algorithms are ready to be used in practice. The results obtained indicate that, on average, the SFS width along banks of large rivers might be reduced, while in some cases it should be widened along the banks of small streams. Copyright В© 2009 IAHS Press.

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Держатели документа:
V. N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, 50/28, Akademgorodok, 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Korets, M.; Onuchin, A.

/ A. S. Prokushkin, G. Guggenberger // Russian Meteorology and Hydrology. - 2007. - Vol. 32, Is. 6. - P404-412, DOI 10.3103/S1068373907060088 . - ISSN 1068-3739
Аннотация: With reference to 2001-2005, the fluxes of dissolved organic matter (DOM) are analyzed in a water stream of the northern taiga subzone of continuous permafrost. Dynamics of hydroclimatic parameters is shown during a frost-free period. It is found that, in spite of a potential decrease in the DOM concentrations with the increased thickness of a seasonally thawed layer, one observes their direct dependence on the precipitation amount and part that enters the water stream. Seasonal variations in the DOM qualitative composition are determined. The basic DOM part exported from the watershed is observed during the regimes of a maximum water content (spring flooding and floods). В© Allerton Press, Inc. 2007.

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Полный текст

Держатели документа:
Sukachev Institute of Forest, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Institute fur Bodenkunde und Planzenernahrung, Martin-Luther-Universitat Halle-Wittenberg, Weidenplan 14, 06108 Halle, Saale, Germany

Доп.точки доступа:
Prokushkin, A.S.; Guggenberger, G.

/ A. S. Prokushkin [et al.] // Mitigation and Adaptation Strategies for Global Change. - 2006. - Vol. 11, Is. 1. - P223-240, DOI 10.1007/s11027-006-1022-6 . - ISSN 1381-2386
Аннотация: Hydroclimatic variability and plant species ecology cause mosaics in forested watersheds in permafrost zones. Measurements of organic matter accumulation, stock of dissolved organic carbon (DOC), DOC concentrations in litter leachates, subsurface flow, stream and seasonal and annual export were made in two contrasting slopes and valleys in the northern taiga of Central Siberia. Increased organic carbon accumulation in litter was found in poor hydroclimatic conditions of the north-facing slope and bottom valleys. In contrast, DOC contents and its export to soil were almost two-fold higher in warmer well-drained sites of the south-facing slope. The overall DOC flux to mineral soil from the beginning of June to mid-September was 17 g C m -2 in the south-facing slope sites and only 9 g C m-2 in the north-facing slope sites. DOC export was positively correlated with precipitation stimulating leaching of mobilizable organic matter. Accordingly intra-seasonal and interannual variability of the DOC fluxes was tightly coupled with water input. Meanwhile DOC export in Sphagnum and feathermoss sites showed different behavior in dry and wet years. The presence of permafrost preventing deep seepage of organic solutes results in higher stream DOC fluxes compared to permafrost-free or island permafrost regions. However, thawing of seasonally frozen soil layer during the growing season led to the decreasing concentrations of DOC in the stream from June to September. For two seasons of continuous stream water sampling (June and August-September), the riverine DOC flux constituted about 14% of DOC entering mineral soil on both slopes. The ratio of hydrologic DOC loss to NPP of larch forests of the region was estimated to be 1.1%. В© Springer 2006.

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Держатели документа:
V.N. Sukachev Institute of Forest SB RAS, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State University, Svobodnypr. 79, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Prokushkin, A.S.; Gavrilenko, I.V.; Abaimov, A.P.; Prokushkin, S.G.; Samusenko, A.V.

/ V. Mavromatis [et al.] // Geochim. Cosmochim. Acta. - 2014. - Vol. 147. - P76-89, DOI 10.1016/j.gca.2014.10.009 . - ISSN 0016-7037
Аннотация: To unravel the Mg isotope fractionation pathways within the continuous permafrost zone in the larch deciduous forest of Central Siberia, we measured the Mg isotopic composition of two large Siberian rivers (Nizhnaya Tunguska and Kochechum, which flow into the Yenisey), a small forested stream, and the major fluid and solid sources of Mg in the watershed: atmospheric precipitates, surface suprapermafrost flow, interstitial soil solutions, plant biomass, litter and mineral soils. The obtained results indicate a significant seasonal variation in riverine water Mg isotope signatures. During the winter baseflow, the Mg isotope composition of large rivers is significantly lighter than the source basaltic rocks and the atmospheric depositions. These differences support the presence of fluids enriched in lighter Mg isotopes, such as those affected by the mineral precipitation of secondary silicates or fluids that dissolve sedimentary carbonate rocks. During the spring flood and in the summer and fall seasons, the river fluid ?26Mg values increased by 0.2-0.3‰ and approached the Mg isotope composition of the ground vegetation (dwarf shrubs, mosses) and the soil organic horizon. Overall, the riverine waters were 0.3-0.7‰ lighter than the unaltered bedrock and the deep minerals soil horizons.The Mg isotopic compositions of Larix gmelinii organs (i.e., stem wood, roots and needles) exhibit a low variability. However, an enrichment of 0.2-0.3‰ in the ?26Mg of larch needles in the course of the growing season, from June to September can be observed. This enrichment most likely demonstrates uptake of isotopically heavier Mg by the plant in addition to the progressive thawing of the mineral soil (deepening of the active layer of the soil). Overall, the Mg isotope approach indicates the important contribution of vegetation (larch needles, mosses and dwarf shrubs) to the riverine Mg isotope signature and helps to reveal the contribution of isotopically light carbonate rocks in the large rivers of the Central Siberian Plateau.

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Держатели документа:
Geosciences Environnement Toulouse (GET), CNRS, UMR 5563, Observatoire Midi-Pyrenees, 14 Av. E. BelinToulouse, France
V.N. Sukachev Institute of Forest, SB RAS, Akademgorodok 50/28Krasnoyarsk, Russian Federation
BIO-GEO-CLIM Laboratory, Tomsk State UniversityTomsk, Russian Federation

Доп.точки доступа:
Mavromatis, V.; Prokushkin, A.S.; Pokrovsky, O.S.; Viers, J.; Korets, M.A.

/ A. N. Myers-Pigg [et al.] // Geophys. Res. Lett. - 2015. - Vol. 42, Is. 2. - P377-385, DOI 10.1002/2014GL062762 . - ISSN 0094-8276
Аннотация: Biomass burning produces a spectrum of thermally altered materials that releases pyrogenic carbon (PyC) to terrestrial, atmospheric, and aquatic systems. Most studies focus on the refractory end of the PyC spectrum, derived from middle- to high-temperature combustion. Low-temperature PyC is produced during wildfires and has been found to be particularly labile and water soluble. Here we find that in each of the major Siberian watersheds, low-temperature fire-derived biomarkers are present in detectable concentrations during all flow regimes of the 2004-2006 sampling period, confirming that PyC is an intrinsic component of the dissolved organic carbon (DOC) pool mobilized by hydrologic events. Gymnosperm combustion, from the southern portions of these watersheds, is the primary source of this Py-DOC input. Using first-order degradation rates and transit times of water through these rivers, about half of the total estimated flux of this material may be remineralized during transport from fire source to river mouth (20-40-days), demonstrating the input of a labile source of PyC to these watersheds.

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Держатели документа:
Department of Oceanography, Texas A and M UniversityCollege Station, TX, United States
Department of Marine Sciences, Texas A and M UniversityGalveston, TX, United States
V N Sukachev Institute of Forest SB RASKrasnoyarsk, Russian Federation
Siberian Federal UniversityKrasnoyarsk, Russian Federation
ИЛ СО РАН

Доп.точки доступа:
Myers-Pigg, A.N.; Louchouarn, P.; Amon, R.M.W.; Prokushkin, A.; Pierce, K.; Rubtsov, A.

[Text] / L. A. Diemer [et al.] // Freshw. Sci. - 2015. - Vol. 34, Is. 4. - P1443-1456, DOI 10.1086/683481. - Cited References:63. - We thank the Russian and American researchers and volunteers and the University of New Hampshire (UNH) Water Quality Analysis Laboratory technicians for their assistance in the field and laboratory. Special thanks to Alison Appling, Wilfred Wollheim, Jody Potter, and 2 anonymous referees for their suggestions on the manuscript. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. 147640. We also acknowledge the research support of the Russian Fund for Basic Research No. 14-05-00420 and the Russian Ministry of Education No. 14.B25.31.0031. This research was taken from a thesis submitted to the Graduate School at the University of New Hampshire as part of the requirements for completion of a MS degree (Diemer 2014). . - ISSN 2161-9549. - ISSN 2161-9565РУБ Ecology + Marine & Freshwater Biology

Аннотация: Fire can transform the boreal forest landscape, thereby leading to potential changes in the loading of organic matter and nutrients to receiving streams and in the retention or transformation of these inputs within the drainage network. We used the Tracer Additions for Spiraling Curve Characterization (TASCC) method to conduct 17 nutrient-addition experiments (9 single additions of NO3- and 8 combined additions of NH4+ and PO43-) in 5 boreal headwater streams underlain by continuous permafrost and draining watersheds with a range of burn histories (4->100 y since last burn) in the Nizhnyaya Tunguska River watershed in Central Siberia. Hydrology, ambient nutrient concentration, and the ratio of dissolved organic C (DOC) to nutrients drove rates of nutrient uptake in the streams. Nutrients were taken up with greater efficiency and magnitude under conditions with high flow and reduced diffusive boundary layer (DBL), regardless of watershed burn history. Ambient molar ratio of DOC: PO43- explained some variation in ambient uptake velocity (upsilon(f)) for NH4+ and PO43-. We also observed tight coupling between ambient rates of NH4+ and PO43- uptake across the watershed burn-history gradient. These data suggest that fire-driven changes in stream chemistry may alter N and P retention and subsequent export of materials to downstream receiving waters. Climate change is likely to enhance the frequency and intensity of boreal forest fires and alter the extent of permafrost. Therefore, understanding the interactions among C, N, and P in these Arctic systems has important implications for global biogeochemical cycling.

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Scopus

Держатели документа:
Univ New Hampshire, Dept Nat Resources, Durham, NH 03824 USA.
Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk, Russia.

Доп.точки доступа:
Diemer, Laura A.; McDowell, William H.; Wymore, Adam S.; Prokushkin, Anatoly S.; National Science Foundation Graduate Research Fellowship Program [147640]; Russian Fund for Basic Research [14-05-00420]; Russian Ministry of Education [14.B25.31.0031]

/ L. Orgogozo [et al.] // Permafrost Periglacial Process. - 2019. - Vol. 30, Is. 2. - P75-89, DOI 10.1002/ppp.1995. - Cited References:89. - CALMIP supercomputing center, Grant/Award Number: p12166; Campus France, Grant/Award Number: Kolmogorov No 14.587.21.0036; Russian Science Foundation, Grant/Award Number: 18-17-00237 . - ISSN 1045-6740. - ISSN 1099-1530РУБ Geography, Physical + Geology

Аннотация: To quantify the impact of evapotranspiration phenomena on active layer dynamics in a permafrost-dominated forested watershed in Central Siberia, we performed a numerical cryohydrological study of water and energy transfer using a new open source cryohydrogeology simulator, with two innovative features: spatially distributed, mechanistic handling of evapotranspiration and inclusion of a numerical tool in a high- performance computing toolbox for numerical simulation of fluid dynamics, OpenFOAM. In this region, the heterogeneity of solar exposure leads to strong contrasts in vegetation cover, which constitutes the main source of variability in hydrological conditions at the landscape scale. The uncalibrated numerical results reproduce reasonably well the measured soil temperature profiles and the dynamics of infiltrated waters revealed by previous biogeochemical studies. The impacts of thermo-hydrological processes on water fluxes from the soils to the stream are discussed through a comparison between numerical results and field data. The impact of evapotranspiration on water fluxes is studied numerically, and highlights a strong sensitivity to variability in rooting depth and corresponding evapotranspiration at slopes of different aspect in the catchment.

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Держатели документа:
Univ Toulouse, Observ Midi Pyrenees, GET, UMR CNRS UR IRD UPS 5563 234, 14 Ave Edouard Belin, F-31400 Toulouse, France.
Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk, Russia.
Tomsk State Univ, BIO GEO CLIM Lab, Tomsk, Russia.
Univ Paris Saclay, Lab Sci Climat & Environm, IPSL LSCE, UMR CNRS CEA UVSQ 8212, Gif Sur Yvette, France.
Univ Toulouse, INPT, UPS, IMFT, Toulouse, France.
CNRS, IMFT, Toulouse, France.

Доп.точки доступа:
Orgogozo, Laurent; Prokushkin, Anatoly S.; Pokrovsky, Oleg S.; Grenier, Christophe; Quintard, Michel; Viers, Jerome; Audry, Stephane; CALMIP supercomputing center [p12166]; Campus France [14.587.21.0036]; Russian Science Foundation [18-17-00237]

/ B. M. Rodriguez-Cardona, A. A. Coble, A. S. Wymore [et al.] // Sci. Rep. - 2020. - Vol. 10, Is. 1. - Ст. 8722, DOI 10.1038/s41598-020-65520-0 . - ISSN 2045-2322
Аннотация: The Central Siberian Plateau is undergoing rapid climate change that has resulted in increased frequency of forest fires and subsequent alteration of watershed carbon and nutrient dynamics. Across a watershed chronosequence (3 to 100 years since wildfire) we quantified the effects of fire on quantity and composition of dissolved organic matter (DOM), stream water nutrient concentrations, as well as in-stream nutrient uptake. Wildfires increased concentrations of nitrate for a decade, while decreasing concentrations of dissolved organic carbon and nitrogen (DOC and DON) and aliphatic DOM contribution for five decades. These post-wildfire changes in stream DOM result in lower uptake efficiency of in-stream nitrate in recently burned watersheds. Nitrate uptake (as uptake velocity) is strongly dependent on DOM composition (e.g. polyphenolics), ambient dissolved inorganic nitrogen (DIN), and DOC to DIN ratios. Our observations and experiments suggest that a decade-long pulse of inorganic nitrogen and a reduction of DOC export occur following wildfires in streams draining the Central Siberian Plateau. Increased fire frequency in the region is thus likely to both decrease DOM and increase nitrate delivery to the main stem Yenisei River, and ultimately the Arctic Ocean, in the coming decades. © 2020, The Author(s).

Scopus

Держатели документа:
Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH, United States
National Council for Air and Stream Improvement, Inc., Corvallis, OR, United States
V.N. Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Pontchartrain Institute for Environmental Sciences, Department of Chemistry, University of New Orleans, New Orleans, LA, United States
Department of Earth, Ocean and Atmospheric Sciences, Florida State University, Tallahassee, FL, United States
Departement des Sciences Biologiques, Universite du Quebec a Montreal, Montreal, QC, Canada

Доп.точки доступа:
Rodriguez-Cardona, B. M.; Coble, A. A.; Wymore, A. S.; Kolosov, R.; Podgorski, D. C.; Zito, P.; Spencer, R. G.M.; Prokushkin, A. S.; McDowell, W. H.

/ B. M. Rodriguez-Cardona, A. A. Coble, A. S. Wymore [et al.] // Sci Rep. - 2020. - Vol. 10, Is. 1. - Ст. 8722, DOI 10.1038/s41598-020-65520-0. - Cited References:53. - The authors would like to thank two anonymous reviewers for their suggestions that helped improve this manuscript and the staff and lab members of the Water Quality Analysis Laboratory at the University of New Hampshire especially Carla Lopez-Lloreda for her help in field work. This work was supported by the National Science Foundation Award No. ICER 14-45246, Crossing the boundaries of Critical Zone science with a virtual institute (SAVI); DEB-1556603, Deciphering the role of dissolved organic nitrogen in stream nutrient cycling; RFBR #14-05-00420, Small catchments within the continuous permafrost zone of Central Siberia: the role of wildfire and forest succession in stream biogeochemistry; and #18-05-60203, Landscape and hydrobiological controls on the transport of terrigenic carbon to the Arctic Ocean. The authors also thank Donald F. Smith and the rest of the NHMFL user facility which is supported by the National Science Foundation Division of Chemistry through DMR-1644779 and the State of Florida. Authors declare no conflicts of interest. . - ISSN 2045-2322РУБ Multidisciplinary Sciences

Аннотация: The Central Siberian Plateau is undergoing rapid climate change that has resulted in increased frequency of forest fires and subsequent alteration of watershed carbon and nutrient dynamics. Across a watershed chronosequence (3 to 100 years since wildfire) we quantified the effects of fire on quantity and composition of dissolved organic matter (DOM), stream water nutrient concentrations, as well as in-stream nutrient uptake. Wildfires increased concentrations of nitrate for a decade, while decreasing concentrations of dissolved organic carbon and nitrogen (DOC and DON) and aliphatic DOM contribution for five decades. These post-wildfire changes in stream DOM result in lower uptake efficiency of in-stream nitrate in recently burned watersheds. Nitrate uptake (as uptake velocity) is strongly dependent on DOM composition (e.g. polyphenolics), ambient dissolved inorganic nitrogen (DIN), and DOC to DIN ratios. Our observations and experiments suggest that a decade-long pulse of inorganic nitrogen and a reduction of DOC export occur following wildfires in streams draining the Central Siberian Plateau. Increased fire frequency in the region is thus likely to both decrease DOM and increase nitrate delivery to the main stemYenisei River, and ultimately the Arctic Ocean, in the coming decades.

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Держатели документа:
Univ New Hampshire, Dept Nat Resources & Environm, Durham, NH 03824 USA.
Natl Council Air & Stream Improvement Inc, Corvallis, OR USA.
VN Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia.
Univ New Orleans, Dept Chem, Pontchartrain Inst Environm Sci, New Orleans, LA 70148 USA.
Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA.
Univ Quebec Montreal, Dept Sci Biol, Montreal, PQ, Canada.

Доп.точки доступа:
Rodriguez-Cardona, B. M.; Coble, A. A.; Wymore, A. S.; Kolosov, R.; Podgorski, D. C.; Zito, P.; Spencer, R. G. M.; Prokushkin, A. S.; McDowell, W. H.; Prokushkin, Anatoly; Coble, Ashley; Rodriguez-Cardona, Bianca; Wymore, Adam; National Science FoundationNational Science Foundation (NSF) [ICER 14-45246, DEB-1556603]; RFBRRussian Foundation for Basic Research (RFBR) [14-05-00420, 18-05-60203]; National Science Foundation Division of ChemistryNational Science Foundation (NSF) [DMR-1644779]; State of Florida

/ S. N. Vorobyev, J. Karlsson, Y. Y. Kolesnichenko [et al.] // Biogeosciences. - 2021. - Vol. 18, Is. 17. - P4919-4936, DOI 10.5194/bg-18-4919-2021. - Cited References:104. - This research has been supported by the Government Council on Grants, Russian Federation (grant no. 14.B25.31.0001) and the Forsvarsdepartementet, Sveriges (grant no. 2016-05275). . - ISSN 1726-4170. - ISSN 1726-4189РУБ Ecology + Geosciences, Multidisciplinary

Аннотация: Greenhouse gas (GHG) emission from inland waters of permafrost-affected regions is one of the key factors of circumpolar aquatic ecosystem response to climate warming and permafrost thaw. Riverine systems of central and eastern Siberia contribute a significant part of the water and carbon (C) export to the Arctic Ocean, yet their C exchange with the atmosphere remains poorly known due to lack of in situ GHG concentration and emission estimates. Here we present the results of continuous in situ pCO(2) measurements over a 2600 km transect of the Lena River main stem and lower reaches of 20 major tributaries (together representing a watershed area of 1 661 000 km(2), 66% of the Lena's basin), conducted at the peak of the spring flood. The pCO(2) in the Lena (range 400-1400 mu atm) and tributaries (range 400-1600 mu atm) remained generally stable (within ca. 20 %) over the night-day period and across the river channels. The pCO(2) in tributaries increased northward with mean annual temperature decrease and permafrost increase; this change was positively correlated with C stock in soil, the proportion of deciduous needleleaf forest, and the riparian vegetation. Based on gas transfer coefficients obtained from rivers of the Siberian permafrost zone (k = 4.46md(-1)), we calculated CO2 emission for the main stem and tributaries. Typical fluxes ranged from 1 to 2 gCm(-2) d(-1) ( 99% CO2, 1% CH4), which is comparable with CO2 emission measured in the Kolyma, Yukon, and Mackenzie rivers and permafrost-affected rivers in western Siberia. The areal C emissions from lotic waters of the Lena watershed were quantified by taking into account the total area of permanent and seasonal water of the Lena basin (28 000 km(2)). Assuming 6 months of the year to be an open water period with no emission under ice, the annual C emission from the whole Lena basin is estimated as 8.3 +/- 2.5 TgCyr(-1), which is comparable to the DOC and dissolved inorganic carbon (DIC) lateral export to the Arctic Ocean.

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Держатели документа:
Tomsk State Univ, BIO GEO CLIM Lab, Tomsk, Russia.
Umea Univ, Climate Impacts Res Ctr CIRC, Dept Ecol & Environm Sci, Linnaeus Vag 6, S-90187 Umea, Sweden.
Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, KSC SB RAS, Krasnoyarsk 660036, Russia.
CNRS, UMR 5563, Geosci & Environm Toulouse, 14 Ave Edouard Belin, F-31400 Toulouse, France.
Russian Acad Sci, N Laverov Fed Ctr Integrated Arctic Res, Arkhangelsk, Russia.

Доп.точки доступа:
Vorobyev, Sergey N.; Karlsson, Jan; Kolesnichenko, Yuri Y.; Korets, Mikhail A.; Pokrovsky, Oleg S.; Government Council on Grants, Russian Federation [14.B25.31.0001]; Forsvarsdepartementet, Sveriges [2016-05275]