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

[Text] / A. S. Prokushkin [et al.] // Russ. J. Ecol. - 2008. - Vol. 39, Is. 3. - P151-159, DOI 10.1134/S1067413608030016. - Cited References: 33 . - 9. - ISSN 1067-4136РУБ Ecology

Аннотация: Fluxes of dissolved organic matter (DOM) in larch biogeocenoses and its export from the drainage basin have been studied in the zone of continuous permafrost. A comparative assessment of DOM input into the soil has been made on slopes of northern and southern exposures (as variants reflecting the current state and warming). The dynamics of DOM export in a creek depending on the increasing depth of the active soil horizon in the drainage area have been revealed. It is concluded that an increase in the depth of the seasonally thawing layer induced by global warming will not have any significant effect on the amount of annual DOM export. Reduction of DOM export may be expected upon a decrease in litter stocks under the effect of their mineralization and forest fires.

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Держатели документа:
[Guggenberger, H.] Univ Halle Wittenberg, D-06108 Halle, Saale, Germany
[Prokushkin, A. S.
Tokareva, I. V.
Prokushkin, S. G.
Abaimov, A. P.] Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Prokushkin, A.S.; Tokareva, I.V.; Prokushkin, S.G.; Abaimov, A.P.; Абаимов Анатолий Платонович; Guggenberger, H...

[Text] / A. . Rodionov [et al.] // Eur. J. Soil Sci. - 2007. - Vol. 58, Is. 6. - P1260-1272, DOI 10.1111/j.1365-2389.2007.00919.x. - Cited References: 44 . - 13. - ISSN 1351-0754РУБ Soil Science

Аннотация: Soils of the high latitudes are expected to respond sensitively to climate change, but still little is known about carbon and nitrogen variability in them. We investigated the 0.44-km(2) Little Grawijka Creek catchment of the forest tundra ecotone (northern Krasnoyarsk Krai, Russian Federation) in order (i) to relate the active-layer thickness to controlling environmental factors, (ii) to quantify soil organic carbon (SOC) and total nitrogen (NT) stocks, and (iii) to assess their variability with respect to different landscape units. The catchment was mapped on a 50 x 50 m grid for topography, dominant tree and ground vegetation, organic-layer and moss-layer thickness, and active-layer thickness. At each grid point, bulk density, and SOC and NT concentrations were determined for depth increments. At three selected plots, 2-m deep soil cores were taken and analysed for SOC, NT and C-14. A shallow active layer was found in intact raised bogs at plateaux situations and in mineral soils of north-northeast (NNE) aspect. Good drainage and greater solar insolation on the south-southwest (SSW) slopes are reflected in deeper active layers or lack of permafrost. Organic carbon stocks to a soil depth of 90 cm varied between 5 and 95 kg m(-2). The greatest stocks were found in the intact raised bogs and on the NNE slopes. Canonical correspondence analysis indicates the dominant role of active-layer thickness for SOC and NT storage. The 2-m soil cores suggest that permafrost soils store about the same amount of SOC from 90 to 200 cm as in the upper 90 cm. Most of this deep SOC pool was formed in the mid-Holocene (organic soils) and the late Pleistocene (mineral soils). Our results showed that even within a small catchment of the forest tundra, active-layer thickness and, hence, SOC and NT storage vary greatly within the landscape mosaic. This has to be taken into account when using upscaling methods such as remote sensing for assessing SOC and NT storage and cycling at a regional to continental level.

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Держатели документа:
Univ Halle Wittenberg, Inst Agr & Ernahrungswissensch, D-06108 Halle, Germany
Univ Gottingen, Inst Bodenkunde & Waldernahrung, D-37077 Gottingen, Germany
Max Planck Inst Biogeochem, D-07745 Jena, Germany
SB RAS, Field Stn Igarka Permafrost Inst Yakutsk, Igarka 663200, Russia
SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Rodionov, A...; Flessa, H...; Grabe, M...; Kazansky, O.A.; Shibistova, O...; Guggenberger, G...

[Text] / E. O. Makushkin, N. D. Sorokin // Contemp. Probl. Ecol. - 2013. - Vol. 6, Is. 5. - P532-541, DOI 10.1134/S1995425513050090. - Cited References: 33. - Financial support for the present work was provided by project 5.1.1 "The Fundamentals of Management of Biological Resources" of specialized branches of the Russian Academy of Sciences. . - 10. - ISSN 1995-4255РУБ Ecology

Аннотация: This article reports a study of the enzymatic activity of modern and lower soils of the islands and terrace floodplain close to Lobanovskaya Creek in the right bank of the delta of the Selenga River. Environmental conditions determining the variation in enzymatic activity at the sampling sites are addressed. The enzyme activity of the soils of the right-bank part of the delta is assessed and compared to that of soils of the left-bank part (sampled at sites which have different landscape and ecological parameters).

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Держатели документа:
[Makushkin, E. O.] Russian Acad Sci, Siberian Branch, Inst Gen & Expt Biol, Ulan Ude 670047, Russia
[Sorokin, N. D.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Makushkin, E.O.; Sorokin, N. D.; Сорокин, Николай Дмитриевич; Russian Academy of Sciences [5.1.1]