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

/ O. Shibistova et al, S. Efgrafova, G. Zrazhevskaya // Tellus. Series B: Chemical and physical meteorology. - 2002. - Vol. 54B, № 5. - С. 552-567
Аннотация: Rates of CO2 efflux from the floor of a central Siberian Scots pine (Pinus sylvestris) forest were measured using a dynamic closed chamber system and by a eddy covariance system placed 2.5 m above the forest floor. Measurements were undertaken for a full growing season: from early May to early October 1999. Spatial variability as determined by the chamber measurements showed the rate of CO2 efflux to depend on location, with rates from relatively open areas ("glades") only being about 50% those observed below or around trees. This was despite generally higher temperatures in the glade during the day. A strong relationship between CO2 efflux rate and root density was observed in early spring, suggesting that lower rates in open areas may have been attributable to fewer roots there. Continuous measurements with the eddy covariance system provided good temporal coverage. This method, however, provided estimates of ground CO2 efflux rate rates that were about 50% lower than chamber measurements that were undertaken in areas considered to be representative of the forest as a whole. An examination of the seasonal pattern of soil CO2 efflux rates suggests that much of the variability in CO2 efflux rate could be accounted for by variations in soil temperature. Nevertheless, there were also some indications that the soil water deficits served to reduce soil CO2 efflux rates during mid-summer. Overall the sensitivity of CO2 efflux rate to temperature seems to be greater for this boreal ecosystem than has been the case for most other studies.

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Держатели документа:
Russian Acad Sci, VN Sukacehv Forest Inst, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Shibistova, Olga Borisovna; Шибистова, Ольга Борисовна; Yevgrafova, Svetlana Yur'yevna; Евграфова, Светлана Юрьевна; Zrazhevskaya, Galina Kirillovna; Зражевская, Галина Кирилловна

: материалы временных коллективов / A. A. Knorre, A. V. Kirdyanov, A. S. Prokushkin // Climatic changes and their impact on boreal and temperate forests: Abstracts of the International conference (June 5-7, Ekaterinburg, Russia) : Ural State Forest Engineering University, 2006. - С. 43

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

Доп.точки доступа:
Kirdyanov, Alexandr Viktorovich; Кирдянов, Александр Викторович; Prokushkin, Anatoly Stanislavovich; Прокушкин, Анатолий Станиславович; Кнорре, Анастасия Алексеевна

: материалы временных коллективов / A. A. Knorre, A. V. Kirdyanov, A. S. Prokushkin // Climate change and their impact on boreal and temperate forests: Abstracts of the International Conference (June 5-7, 2006, Ekaterinburg, Russia). - 2006. - С. 43

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

Доп.точки доступа:
Kirdyanov, Alexandr Viktorovich; Кирдянов, Александр Викторович; Prokushkin, Anatoly Stanislavovich; Прокушкин, Анатолий Станиславович; Кнорре, Анастасия Алексеевна
Имеются экземпляры в отделах:
РСФ (30.01.2008г. (1 экз.) - Б.ц.) - свободны 1

[Текст] = Impact of thinning on radial increment of pine forests originated in former agricultural lands in Krasnoyarsk forest-steppe : материалы временных коллективов / И. И. Маркова // Исследование компонентов лесных экосистем Сибири: Материалы конференции молодых ученых, 5-6 апреля 2012 г. , Красноярск. - Красноярск : Институт леса им. В.Н. Сукачева СО РАН , 2012. - Вып.13. - С. 24-26. - Библиогр.: 2 назв.
Аннотация: The objects of research were pine stands, formed naturally in the former agricultural lands in Krasnoyarsk forest-steppe. Trial and control plots were established in the stands, after thinning of different intensity (93% and 57% of number of stems). The work is based on the experimental data, obtained during the analysis of transverse slices images of model trees at the root collar. Realization of the potential productivity of individual trees as a result of thinning is mostly expressed in trees of higher ranks, and only afetr intensive thinning.

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

Доп.точки доступа:
Markova I.I.

/ K. R. Briffa [et al.] // Quat. Sci. Rev. - 2013. - Vol. 72. - P83-107, DOI 10.1016/j.quascirev.2013.04.008. - Cited References: 70. - KRB, TMM and TJO acknowledge support from NERC (NE/G018863/1). RMH, AVK, VSM and SGS acknowledge support from the partnership project of the Ural and Siberian Branches of the Russian Academy of Sciences (No 12-C-4-1038 and No 69). SGS, VSM and RMH acknowledge support from the Russian Foundation for Basic Research (No 11-04-00623-a, No 13-04-00961-a and No 13-04-02058). . - 25. - ISSN 0277-3791РУБ Geography, Physical + Geosciences, Multidisciplinary

Аннотация: The development of research into the history of tree growth and inferred summer temperature changes in Yamaha spanning the last 2000 years is reviewed. One focus is the evolving production of tree-ring width (TRW) and tree-ring maximum-latewood density (MXD) larch (Larix sibirica) chronologies, incorporating different applications of Regional Curve Standardisation (RCS). Another focus is the comparison of independent data representing past tree growth in adjacent Yamaha areas: Yamal and Polar Urals, and the examination of the evidence for common growth behaviour at different timescales. The sample data we use are far more numerous and cover a longer time-span at Yamal compared to the Polar Urals, but Yamal has only TRW, while there are both TRW and MXD for the Polar Urals. We use more data (sub-fossil and from living trees) than in previous dendroclimatic studies in this region. We develop a new TRW chronology for Yamal, more than 2000 years long and running up to 2005. For the Polar Urals we develop new TRW and MXD chronologies that show good agreement at short (<15 years) and medium (15-100 years) timescales demonstrating the validity of attempts to reconcile the evidence of longer-timescale information that they provide. We use a "conservative" application of the RCS approach (two-curve signal-free RCS), guarding against the possibility of "modern sample bias": a possible inflation of recent chronology values arising out of inadvertent selection of mostly relatively fast-growing trees in recent centuries. We also transform tree indices to have a normal distribution to remove the positive chronology skew often apparent in RCS TRW chronologies. This also reduces the apparent magnitude of 20th century tree-growth levels. There is generally good agreement between all chronologies as regards the major features of the decadal to centennial variability. Low tree-growth periods for which the inferred summer temperatures are approximately 2.5 degrees C below the 1961-90 reference are apparent in the 15-year smoothed reconstructions, centred around 1005, 1300, 1455, 1530, particularly the 1810s where the inferred cooling reaches -4 degrees C or even -6 degrees C for individual years, and the 1880s. These are superimposed on generally cool pre-20th century conditions: the long-term means of the pre-1900 reconstructed temperature anomalies range from -0.6 to -0.9 degrees C in our alternative reconstructions. There are numerous periods of one or two decades with relatively high growth (and inferred summer temperatures close to the 1961-1990 level) but at longer timescales only the 40-year period centred at 250 CE appears comparable with 20th century warmth. Although the central temperature estimate for this period is below that for the recent period, when we take into account the uncertainties we cannot be highly confident that recent warmth has exceeded the temperature of this earlier warm period. While there are clear warm decades either side of 1000 CE, neither TRW nor MXD data support the conclusion that temperatures were exceptionally high during medieval times. One previous version of the Polar Urals TRW chronology is shown here to be in error due to an injudicious application of RCS to non-homogeneous sample data, partly derived from root-collar samples that produce spuriously high chronology values in the 11th and 15th centuries. This biased chronology has been used in a number of recent studies aimed at reconstructing wider scale temperature histories. All of the chronologies we have produced here clearly show a generally high level of growth throughout their most recent 80 years. Allowing for chronology and reconstruction uncertainty, the mean of the last 100 years of the reconstruction is likely warmer than any century in the last 2000 years in this region. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.

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Держатели документа:
[Briffa, Keith R.
Melvin, Thomas M.
Osborn, Timothy J.] Univ E Anglia, Sch Environm Sci, Climat Res Unit, Norwich NR4 7TJ, Norfolk, England
[Hantemirov, Rashit M.
Mazepa, Valeriy S.
Shiyatov, Stepan G.] Russian Acad Sci, Ural Branch, Inst Plant & Anim Ecol, Ekaterinburg 620144, Russia
[Kirdyanov, Alexander V.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Esper, Jan] Johannes Gutenberg Univ Mainz, Dept Geog, D-55099 Mainz, Germany
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28

Доп.точки доступа:
Briffa, K.R.; Melvin, T.M.; Osborn, T.J.; Hantemirov, R.M.; Kirdyanov, A.V.; Mazepa, V.S.; Shiyatov, S.G.; Esper, J...

/ E. F. Vedrova [et al.] // Contemp. Probl. Ecol. - 2012. - Vol. 5, Is. 7. - P645-653, DOI 10.1134/S1995425512070098. - Cited References: 23. - This work was supported by the Russian Foundation for Basic Research, project no. 08-04-00027a, and the Siberian Branch of the Russian Academy of Sciences, integrative project no. 50. . - 9. - ISSN 1995-4255РУБ Ecology

Аннотация: A change in the mass and composition of organic matter in the phytomass and soil of pine forests affected by mid-intensity and high-intensity fires is considered. It is shown that a mid-intensity fire did not catastrophically affect the pool of carbon in the middle-aged pine forests of the subtaiga forest-steppe and the taiga higher belt areas in the southwest of the Baikal region. Five years after a high-intensity fire, the carbon reserves in a mature taiga pine forest remain 20% lower than in an unaffected pine forest. Compared with the reference figures, the mass of C and soil cover in the stand phytomass decreased by 18 and 63%, respectively. In the easily mineralizable fraction of organic matter, the reserves of carbon decreased by half owing to burnout of waste wood (by 64%) and root detritus (by 50% compared with the reference tree stand figures).

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[Vedrova, E. F.
Evdokimenko, M. D.
Bezkorovaynaya, I. N.
Mukhortova, L. V.
Cherednikova, Yu. S.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Krasnoyarsk Kra, Russia

Доп.точки доступа:
Vedrova, E.F.; Evdokimenko, M.D.; Bezkorovaynaya, I.N.; Mukhortova, L.V.; Cherednikova, Y.S.

[Text] / Y. . Yohannes [et al.] // For. Ecol. Manage. - 2011. - Vol. 261, Is. 6. - P1090-1098, DOI 10.1016/j.foreco.2010.12.032. - Cited References: 56. - We would like to thank Deutsche Forschungsgesellschaft (DFG) for financial support of the study within the project package PAK 188. We thank Deksiso Bulcha, Getu Tadesse, Temesgen Yohannes, Abule Loya, and Awol Assefa for their assistance and support in collecting data in the field. We also thank Roger-Michael Klatt, Ulrike Pieper, Pieter Wiese and Holger Ciglasch for their laboratory assistance in soil analysis. Likewise we are grateful to Frank Schaarschmidt and Hany El Kateb for their advice in statistical analysis. . - 9. - ISSN 0378-1127РУБ Forestry

Аннотация: Variability of soil CO2 efflux strongly depends on soil temperature, soil moisture and plant phenology. Separating the effects of these factors is critical to understand the belowground carbon dynamics of forest ecosystem. In Ethiopia with its unreliable seasonal rainfall, variability of soil CO2 efflux may be particularly associated with seasonal variation. In this study, soil respiration was measured in nine plots under the canopies of three indigenous trees (Croton macrostachys, Podocarpus falcatus and Prunus africana) growing in an Afromontane forest of south-eastern Ethiopia. Our objectives were to investigate seasonal and diurnal variation in soil CO2 flux rate as a function of soil temperature and soil moisture, and to investigate the impact of tree species composition on soil respiration. Results showed that soil respiration displayed strong seasonal patterns, being lower during dry periods and higher during wet periods. The dependence of soil respiration on soil moisture under the three tree species explained about 50% of the seasonal variability. The relation followed a Gaussian function, and indicated a decrease in soil respiration at soil volumetric water contents exceeding a threshold of about 30%. Under more moist conditions soil respiration is tentatively limited by low oxygen supply. On a diurnal basis temperature dependency was observed, but not during dry periods when plant and soil microbial activities were restrained by moisture deficiency. Tree species influenced soil respiration, and there was a significant interaction effect of tree species and soil moisture on soil CO2 efflux variability. During wet (and cloudy) period, when shade tolerant late successional P. falcatus is having a physiological advantage, soil respiration under this tree species exceeded that under the other two species. In contrast, soil CO2 efflux rates under light demanding pioneer C. macrostachys appeared to be least sensitive to dry (but sunny) conditions. This is probably related to the relatively higher carbon assimilation rates and associated root respiration. We conclude that besides the anticipated changes in precipitation pattern in Ethiopia any anthropogenic disturbance fostering the pioneer species may alter the future ecosystem carbon balance by its impact on soil respiration. (C) 2010 Elsevier B.V. All rights reserved.

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Держатели документа:
[Yohannes, Yonas
Shibistova, Olga
Abate, Asferachew
Guggenberger, Georg] Leibniz Univ Hannover, Inst Soil Sci, D-30419 Hannover, Germany
[Yohannes, Yonas] Ethiopian Inst Agr Research, Forestry Res Ctr, Addis Ababa, Ethiopia
[Shibistova, Olga] SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Fetene, Masresha] Univ Addis Ababa, Dept Biol, Addis Ababa, Ethiopia

Доп.точки доступа:
Yohannes, Y...; Shibistova, O...; Abate, A...; Fetene, M...; Guggenberger, G...

[Text] / H. . Santruckova [et al.] // Boreal Environ. Res. - 2010. - Vol. 15, Is. 3. - P357-369. - Cited References: 34. - The authors thank for support all persons kindly contributing this research, Keith Edwards for language correction, unknown reviewers for valuable comments and for financial support of EU project TCOS Siberia and project of MSM 600 766 5801. . - 13. - ISSN 1239-6095РУБ Environmental Sciences

Аннотация: Vertical and horizontal distributions of soil organic carbon, potential microbial activity and basic soil properties were studied in a boreal mixed forest (Central Forest Reserve, TVER region) to elucidate whether the soil CO(2)-efflux is related to basic soil properties that affect the C pool and activity. Soil cores (0-100 cm depth) were taken from two transects every 50 meters (44 points) immediately after completion of soil CO(2)-efflux measurements. Soil was separated into layers and moisture, bulk density, root density and bacterial counts were determined within one day after soil was taken. Microbial respiration, biomass, CN contents and pH were measured within few months. The variability in the soil CO(2)-efflux and microbial activity was mainly explained by soil bulk density. Results further indicate that laboratory measurements of microbial respiration can represent heterotrophic soil respiration of a distinctive ecosystem in natural conditions, if microbial respiration is measured after the effect of soil handling disappears.

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Держатели документа:
[Santruckova, Hana
Kastovska, Eva
Liveckova, Miluse] Univ S Bohemia, Fac Sci, CZ-37005 Ceske Budejovice, Czech Republic
[Kozlov, Daniil] Lomonosov Moscow State Univ, Dept Geog, Moscow 119992, Russia
[Kurbatova, Julya
Tatarinov, Fedor] RAS, AN Severtsov Inst Ecol & Evolut, Moscow 119071, Russia
[Shibistova, Olga] VN Sukachev Forest Inst, Krasnoyarsk 660036, Russia
[Lloyd, Jon] Univ Leeds, Sch Geog, Earth & Biosphere Inst, Leeds LS2 9JT, W Yorkshire, England

Доп.точки доступа:
Santruckova, H...; Kastovska, E...; Kozlov, D...; Kurbatova, J...; Liveckova, M...; Shibistova, O...; Tatarinov, F...; Lloyd, J...

[Text] / O. V. Masyagina, S. G. Prokushkin, T. . Koike // Eurasian Soil Sci. - 2010. - Vol. 43, Is. 6. - P693-700, DOI 10.1134/S1064229310060104. - Cited References: 26. - The authors thank Prof. Takashi and Prof. Lai Qu from Hokkaido University for help in collecting the material. This study was supported by the Global Environmental Research Foundation of the Ministry of Environment of Japan and by the Russian Foundation for Basic Research (project nos. 03-04-48037 and 07-04-96812). . - 8. - ISSN 1064-2293РУБ Soil Science

Аннотация: The effects of cutting on the ecological conditions and soil respiration in larch forests of Japan were studied. The cutting was found to significantly change the soil surface, resulting in the high spatial and temporal variation of the hydrothermal conditions and soil respiration. The influence of a stand's thinning on the environment and soil respiration is considered using the example of the thinning of a ripening larch stand in the Tomakomai National Forest (Hokkaido Island, Japan). The changes in the hydrothermal conditions (the temperature and moisture of the mineral soil layers and litter) and some other factors (the root and litter density and the C/N ratio) after the thinning of the stands and their influence on the soil respiration were studied. The soil respiration in the thinned forest site did not differ from that on the control plot, whereas the soil temperature was much higher in the former. The moisture of the soil mineral layers and the litter was the same. Despite the latter fact, no significant relationships between the soil respiration and its temperature and moisture were found. In the area covered with the thinned forest, the water content of the litter turned out to be the main microclimatic factor affecting the soil respiration. There, the fine roots and litter density were 18 and 15 % less, respectively. The thinning of the stand induced high variation of the soil respiration and temperature, as well as of the fine roots and the litter density. On the whole, the soil respiration in the larch forest studied in Japan was determined by the litter stock and the C to N ratio.

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Держатели документа:
[Masyagina, O. V.
Prokushkin, S. G.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
[Masyagina, O. V.
Koike, T.] Hokkaido Univ, Sapporo, Hokkaido 0608589, Japan

Доп.точки доступа:
Masyagina, O.V.; Prokushkin, S.G.; Koike, T...

[Text] / E. F. Vedrova // Eurasian Soil Sci. - 2008. - Vol. 41, Is. 8. - P860-868, DOI 10.1134/S1064229308080085. - Cited References: 45. - This study was supported by the Russian Foundation for basic research, project nos. 03-04-20018 and 06-06-90596. . - 9. - ISSN 1064-2293РУБ Soil Science

Аннотация: The estimates of the carbon pool in the organic matter of gray soils of the southern taiga, the intensity of destruction of its components, and participation of the latter in the formation of the mineralized carbon flux to the atmosphere are presented for different stages of succession of deciduous (birch) and coniferous (fir) forests. The carbon pool varies from 139.7 to 292.7 t/ha. It is distributed between phytodetritus, mobile and stabile humus (32, 19, and 49%, respectively). The intensity of the mineralization carbon flux to the atmosphere amounts to 3.93-4.13 t C per year. Phytodetritus plays the main role in the formation of this flux. In the soils under the forests studied, 4-6% of the carbon flux are formed owing to mineralization of the newly formed soil humus. In birch forests, 2-6% (0.1-0.2% of the humus pool in the 0-20-cm layer) is the contribution to the flux due to mineralization of soil humus. In fir forests, the mineralized humus is compensated by humus substances synthesized in the process of humification during phytodetritus decomposition.

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Держатели документа:
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Vedrova, E.F.

[Text] / Y. . Nakai [et al.] // Theor. Appl. Climatol. - 2008. - Vol. 93, Is. 03.04.2013. - P133-147, DOI 10.1007/s00704-007-0337-x. - Cited References: 47. - We gratefully thank V. Borovikov and other colleagues of the Sukachev Institute of Forest and the Evenki Forest Management Agency in Tura for their support with logistics and instrumentation. We also thank T. Yorisaki, H. Tanaka, and the staff of "Climatec Inc.'' for system integration and instrumentation. We acknowledge Y. Ohtani, Y. Yasuda, and T. Watanabe for providing software resources. N. Saigusa encouraged us greatly. This research was supported by the "Global environment research fund S-1'', as "Integrated Study for Terrestrial Carbon Management of Asia in the 21th Century based on Scientific Advancements (FY2002-2006)''. . - 15. - ISSN 0177-798XРУБ Meteorology & Atmospheric Sciences

Аннотация: Gmelin larch ( Larix gmelinii) forests are representative vegetation in the continuous permafrost region of Central Siberia. Information on the carbon budget is still limited for this Siberian larch taiga in comparison to boreal forests in other regions, while the larch forests are expected to play a key role in the global carbon balance due to their wide distribution over North-East Eurasia. The authors reported results of eddy covariance CO2 flux measurements at a mature Gmelin larch stand in Central Siberia, Russia (64 degrees 16'N, 100 degrees 12'E, 250m a.s.l.). The measurements were conducted during one growing season (June-early September in 2004). CO2 uptake was initiated in early June and increased sharply until late June, which was closely related to the phenology of the larch trees (i.e., bud-break and needle flush). Maximum half-hourly net CO2 uptake was similar to 6 mu mol m(-2) s(-1). Maximum daily net uptake of similar to 2 g C m(-2) day(-1) occurred at the end of June and in mid-July. Cumulative net uptake was 76-78 g C m(-2), indicating that the mature larch forest acted as a net sink for CO2 during the growing season (91 days). In comparison with other boreal forests, however, the magnitude of net CO2 uptake and night-time release of the forest, and cumulative net CO2 uptake were lower. We suggest that lower net ecosystem CO2 uptake of the study stand was primarily associated with low leaf area index.

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[Nakai, Y.] Forestry & Forest Prod Res Inst, Dept Meteorol Environm, Tsukuba, Ibaraki 3058687, Japan
[Kajimoto, T.] Forestry & Forest Prod Res Inst, Kyushu Res Ctr, Kumamoto, Japan
[Abaimov, A. P.
Zyryanova, O. A.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk, Russia
[Yamamoto, S.] Okayama Univ, Okayama, Japan

Доп.точки доступа:
Nakai, Y...; Matsuura, Y...; Kajimoto, T...; Abaimov, A.P.; Абаимов Анатолий Платонович; Yamamoto, S...; Zyryanova, O.A.

[Text] / T. . Kajimoto [et al.] // J. For. Res. - 2007. - Vol. 12, Is. 2. - P103-112, DOI 10.1007/s10310-006-0259-y. - Cited References: 49 . - 10. - ISSN 1341-6979РУБ Forestry

Аннотация: We present results of individual-based root system measurement and analysis applied for Larix gmelinii trees growing on the continuous permafrost region of central Siberia. The data of root excavation taken from the three stands were used for the analyses; young (26 years old), mature (105 years old), and uneven-aged over-mature stand (220 years old). In this article, we highlight two topics: (1) factors affecting spatio-temporal pattern of root system development, and (2) interactions between aboveground (i.e., crown) and belowground (i.e., root) competition. For the first topic, the detailed observation of lateral roots was applied to one sample tree of the overmature stand. The tree constructed a superficial (< 30 cm in depth) and rather asymmetric root system, and each lateral root expanded mainly into elevated mounds rather than depressed troughs. This indicated that spatial development of an individual root system was largely affected by microtopography (i.e., earth hummocks). For these lateral roots, elongation growth curves were reconstructed using annual-ring data, and annual growth rates and patterns were compared among them. The comparison suggested that temporal root system development is associated with differences in carbon allocation among the lateral roots. For the second topic, we examined relationships between individual crown projection area (CA) and horizontal rooting area (RA) for the sample trees of each stand. RA was almost equal to CA in the young stand, while RA was much larger (three or four times) than CA in the mature and overmature stands. Two measures of stand-level space occupation, crown area index (aboveground: CAI; sum of CAs per unit land area) and rooting area index (belowground: RAI; sum of RAs), were estimated in each stand. The estimates of RA1 (1.3-1.8 m(2) m(-2)) exceeded unity in all stands. In contrast, CAI exceeded unity (1.3 m(2) m(-2)) only in the young stand, and was much smaller (< 0.3 m(2) m(-2)) in the two older stands. These between-stand differences in RAI-CAI relationships suggest that intertree competition for both aboveground and belowground spaces occurred in the young stand, but only belowground competition still occurred in the two older stands. Based on this finding, we hypothesized that competition below the ground may become predominant as a stand ages in L. gmelinii forests. Methodological limitations of our analysis are also discussed, especially for the analysis using the two indices of space occupation (CAI, RAI).

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Держатели документа:
Forestry & Forest Prod Res Inst, Kyushu Res Ctr, Kumamoto 8600862, Japan
Ryukoku Univ, Fac Intercultural Commun, Otsu, Shiga, Japan
Forestry & Forest Prod Res Inst, Tsukuba, Ibaraki 305, Japan
Russian Acad Sci, VN Sukachev Inst Forest, Krasnoyarsk, Russia
Kyoto Univ, Fac Agr, Kyoto, Japan
Kyoto Univ, Field Sci Educ & Res Ctr, Kyoto, Japan
Okayama Univ, Grad Sch Environm Sci, Okayama 7008530, Japan

Доп.точки доступа:
Kajimoto, T...; Osawa, A...; Matsuura, Y...; Abaimov, A.P.; Zyryanova, O.A.; Kondo, K...; Tokuchi, N...; Hirobe, M...

[Text] / L. B. Marchesini [et al.] // Biogeosciences. - 2007. - Vol. 4, Is. 4. - P581-595. - Cited References: 64 . - 15. - ISSN 1726-4170РУБ Ecology + Geosciences, Multidisciplinary

Аннотация: Steppe ecosystems represent an interesting case in which the assessment of carbon balance may be performed through a cross validation of the eddy covariance measurements against ecological inventory estimates of carbon exchanges (Ehman et al., 2002; Curtis et al., 2002). Indeed, the widespread presence of ideal conditions for the applicability of the eddy covariance technique, as vast and homogeneous grass vegetation cover over flat terrains (Baldocchi, 2003), make steppes a suitable ground to ensure a constrain to flux estimates with independent methodological approaches. We report about the analysis of the carbon cycle of a true steppe ecosystem in southern Siberia during the growing season of 2004 in the framework of the TCOS-Siberia project activities performed by continuous monitoring of CO2 fluxes at ecosystem scale by the eddy covariance method, fortnightly samplings of phytomass, and ingrowth cores extractions for NPP assessment, and weekly measurements of heterotrophic component of soil CO2 effluxes obtained by an experiment of root exclusion. The carbon balance of the monitored natural steppe was, according to micrometeorological measurements, a sink of carbon of 151.7 +/- 36.9 g Cm-2, cumulated during the growing season from May to September. This result was in agreement with the independent estimate through ecological inventory which yielded a sink of 150.1 g Cm-2 although this method was characterized by a large uncertainty (+/- 130%) considering the 95% confidence interval of the estimate. Uncertainties in belowground process estimates account for a large part of the error. Thus, in particular efforts to better quantify the dynamics of root biomass (growth and turnover) have to be undertaken in order to reduce the uncertainties in the assessment of NPP. This assessment should be preferably based on the application of multiple methods, each one characterized by its own merits and flaws.

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Держатели документа:
Univ Tuscia, Dept Forest Resources & Environm, I-01100 Viterbo, Italy
Max Planck Inst Biogeochem, D-07745 Jena, Germany
RAS, SB, Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Marchesini, L.B.; Papale, D...; Reichstein, M...; Vuichard, N...; Tchebakova, N...; Valentini, R...

[Text] / T. . Kajimoto [et al.] // Plant Soil. - 2003. - Vol. 255, Is. 1. - P281-292, DOI 10.1023/A:1026175718177. - Cited References: 38 . - 12. - ISSN 0032-079XРУБ Agronomy + Plant Sciences + Soil Science

Аннотация: Spatial distributions of root systems of Larix gmelinii (Rupr.) Rupr. trees were examined in two stands in central Siberia: an even-aged stand (ca. 100 yrs-old) and a mature, uneven-aged (240-280 yrs-old) stand. Five larch trees of different sizes were sampled by excavating coarse roots (diameter > 5 mm) in each stand. Dimensions and ages of all first-order lateral roots were measured. Micro-scale conditions of soil temperature and soil water suction ( each 10 cm deep) were also examined in relation to earth hummock topography (mound vs. trough) and/or ground floor vegetation types (moss vs. lichens). All larch trees developed superficial root systems, consisting of the aborted short tap root (10-40 cm in soil depth) and some well-spread lateral roots (n = 4-13). The root network of each tree was asymmetric, and its rooting area reached about four times the crown projection area. Lateral roots generally expanded into the upper soil layers of the mounds where summer soil temperature was 1-6degreesC higher than inside nearby troughs. Chronological analysis indicated that lateral root expansion started successively from lower to upper parts of each aborted tap root, and some lateral roots occurred simultaneously at several decades after tree establishment. The process of root system development was likely to be primarily linked with post-fire dynamics of rhizosphere environment of the permafrost soils.

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Держатели документа:
Forestry & Forest Prod Res Inst, Tohoku Res Ctr, Morioka, Iwate 0200123, Japan
Forestry & Forest Prod Res Inst, Kukizaki, Ibaraki 3058687, Japan
Ryukoku Univ, Fac Intercultural Commun, Otsu, Shiga 5202194, Japan
Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Kajimoto, T...; Matsuura, Y...; Osawa, A...; Prokushkin, A.S.; Sofronov, M.A.; Abaimov, A.P.

[Text] / M. A. Sofronov, A. V. Volokitina, E. A. Karnaukhova // Eurasian Soil Sci. - 2002. - Vol. 35, Is. 8. - P865-868. - Cited References: 11 . - 4. - ISSN 1064-2293РУБ Soil Science

Аннотация: At present, the thawing depth in permafrost-affected soils is measured from the surface of the moss-lichen cover; if the latter is absent, measurements are performed from the surface of the litter layer. In the first case, the thickness of the root zone is less than the thawing depth by the thickness of the moss-lichen layer; in the second case, the thickness of the root zone is virtually equal to the thawing depth. Thus, upon equal thawing depths, the soil temperature regime in the root zone under the moss-lichen cover differs from that in the soil without this cover. In order to avoid this discrepancy, it is suggested that the thawing depth should be measured from the upper boundary of the root zone.

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Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Sofronov, M.A.; Volokitina, A.V.; Karnaukhova, E.A.

[Text] / T. T. Efremova [et al.] // Eurasian Soil Sci. - 2002. - Vol. 35, Is. 1. - P91-98. - Cited References: 22 . - 8. - ISSN 1064-2293РУБ Soil Science

Аннотация: The migration of Cs-137 into deep peat layers is mainly determined by long-term annual fluctuations in the ground-water level and depends considerably on the microrelief of the bog surface. Radiocesium was found to be retained selectively by humic and fulvic acids of the first (0.1 N NaOH-extractable) fraction. A close correlation of cesium retention with the ash content in peat was observed. The accumulation of Cs-137 in root-inhabited horizons is enhanced by soil biota. The level of contamination of oligotrophic peatbogs corresponds to the background cesium concentrations in mineral soils of Western Siberia.

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Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Div, Joint Inst Geol Geophys & Mineral, Novosibirsk 630090, Russia

Доп.точки доступа:
Efremova, T.T.; Sukhorukov, F.V.; Efremov, S.P.; Budashkina, V.V.

[Text] / T. . Kajimoto [et al.] // Tree Physiol. - 1999. - Vol. 19, Is. 12. - P815-822. - Cited References: 42 . - 8. - ISSN 0829-318XРУБ Forestry

Аннотация: We assessed above- and belowground biomass and net primary production (NPP) of a mature Larix gmelinii (Rupr.) Rupr. forest (240-280 years old) established on permafrost soils in central Siberia. Specifically, we investigated annual carbon budgets in roots in relation to root system development and availability of soil resources. Total stand biomass estimated by allometry was about 39 Mg ha(-1). Root biomass (17 Mg ha(-1)) comprised about 43% of total biomass. Coarse root (greater than or equal to 5 mm in diameter) biomass was about twice that of fine roots (< 5 mm). The aboveground biomass/root biomass ratio (T/R) of the larch stand was about unity, which is much less than that of other boreal and subalpine conifer forests. The proportion of fine roots in total root biomass (35%) was relatively high compared with other cold-climate evergreen conifer forests. Total NPP, defined as the sum of annual biomass increment of woody parts and needle biomass, was estimated to be 1.8 Mg ha(-1) year(-1). Allocation of total NPP to needle production was 56%. The proportion of total NPP in belowground production (27%) was less than for evergreen taiga forests. However, belowground NPP was probablyunderestimatedbecauserootmortalitywasexcluded.We conclude that L. gmelinii trees invested annual carbon gains largely into needle production or roots, or both, at the expense of growth of aboveground woody parts. This carbon allocation pattern, which resulted in the construction of exploitative root networks, appeared to be a positive growth response to the nutrient-poor permafrost soil of central Siberia.

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Держатели документа:
Tohoku Res Ctr, Forestry & Forest Prod Res Inst, Morioka, Iwate 0200123, Japan
Hokkaido Res Ctr, Forestry & Forest Prod Res Inst, Sapporo, Hokkaido 062, Japan
Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Ryukoku Univ, Fac Intercultural Commun, Environm Studies Lab, Otsu, Shiga 52021, Japan

Доп.точки доступа:
Kajimoto, T...; Matsuura, Y...; Sofronov, M.A.; Volokitina, A.V.; Mori, S...; Osawa, A...; Abaimov, A.P.

[Text] / I. D. Grodnitskaya, A. B. Gukasyan // Microbiology. - 1999. - Vol. 68, Is. 2. - P189-193. - Cited References: 25 . - 5. - ISSN 0026-2617РУБ Microbiology

Аннотация: In forest nurseries of Siberia, the following diseases of the conifer seedlings were observed: necroses and chloroses of needles (causative agent, Xanthomonas ampelina); bacterial blight of needles and stems (Pseudomonas syringae); vascular bacteriosis (P. solanacearum); blackening and drying of terminal buds, needle bases, and stems (P. fluorescence); tumor formation at the root collar (Agrobacterium radiobacter and A. tumefaciens); wilting and lodging of the young growth due to the injury of the root system (Bacillus mycoides and B. mesentericus).

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Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forest, Krasnoyarsk, Russia

Доп.точки доступа:
Grodnitskaya, I.D.; Gukasyan, A.B.

[Text] / A. S. Prokushkin [et al.] // Russ. J. Ecol. - 2006. - Vol. 37, Is. 4. - P225-232, DOI 10.1134/S1067413606040023. - Cited References: 35 . - 8. - ISSN 1067-4136РУБ Ecology

Аннотация: Productivity of the moss cover and necromass accumulation in the litter of a sphagnum larch forest have been estimated on the basis of tree age. It has been shown that the total carbon stock in the litter of a 100-year-old stand, including organic matter not destroyed by fire, exceeds the corresponding value for the tree stand itself by more than,an order of magnitude. The accumulation of organic matter on the soil surface inhibits the growth of larch. In particular, this factor impairs hydrothermal conditions in the soil and causes a rise of the permafrost table; as a consequence, lower layers of the root system die off.

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Держатели документа:
Russian Acad Sci, Siberian Div, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Max Planck Inst Biogeochem, D-07701 Jena, Germany

Доп.точки доступа:
Prokushkin, A.S.; Knorre, A.A.; Kirdyanov, A.V.; Schulze, E.D.

[Text] / T. . Kajimoto [et al.] // For. Ecol. Manage. - 2006. - Vol. 222, Is. 01.03.2013. - P314-325, DOI 10.1016/j.foreco.2005.10.031. - Cited References: 62 . - 12. - ISSN 0378-1127РУБ Forestry

Аннотация: We examined size-mass allometry and biomass allocation of two larch species (Larix gmelinii (Rupr.) Rupr. and Larix cajanderi Mayer) that grow on the continuous permafrost regions in Siberia. Sample tree data (total n = 27) gathered from four mature stands (> 100 years old) were employed for analysis. First, to determine good size predictor of biomass, site-specific allometric relationships (log-linear equation form) were derived between dry mass of four components (stem, branch, needle and coarse root; >= 5 mm in diameter) and seven size variables; stem diameters (breast height, 30 cm height and crown base), sapwood areas (breast height and 30 cm height), and two combined-variables (tree height x dia-diameter). For all components, site-specific allometric equations based on breast-height diameter (D) always gave high correlations as those using other size variables. However, between-stand comparisons of the D-base site-specific allometry indicated that size dependency (i.e., regression slope) differed for stem mass. Besides, needle and coarse root mass for a given size (i.e., regression intercept) differed significantly among the four stands. These facts implied that D-base regression model was reliable for biomass estimation by site-specific allometry, but was not suitable for developing general (i.e., site-common) allometry. Second, to examine carbon allocation pattern, we estimated each stand biomass by applying corresponding site-specific D-base allometry. Stand total biomass ranged from 8.6 to 33.1 Mg ha(-1), and aboveground-total/coarse root biomass ratio (i.e., T/R) ranged from 1.5 to 2.6. The variation was mainly due to trade-offs between stem and root biomass. Average T/R was about 2.3 that was calculated for some reported L. gmelinii and L. cajanderi stands (n = 16), including our four stands. This average T/R was extremely small in comparison to that (5.1) of Scots pine (Pinus sylvestris L.) stands on the non- or discontinuous permafrost regions in Siberia. This finding strongly suggested that the two Larix species invested annual carbon gains largely into root growth. We discussed its ecological implications in relation to stand structure and permafrost soil-N conditions in the larch taiga ecosystem. (c) 2005 Elsevier B.V. All rights reserved.

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Держатели документа:
Kyushu Res Ctr, Forestry & Forest Prod Res Inst, Kumamoto 8600862, Japan
Forestry & Forest Prod Res Inst, Tsukuba, Ibaraki 3058687, Japan
Ryukoku Univ, Fac Intercultural Commun, Otsu, Shiga 5202194, Japan
Russian Acad Sci, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Russian Acad Sci, Inst Biol Problems Cryolithozone, Yakutsk 677891, Russia
Sakha Minist Nat Protect, Yakutsk 67000, Russia
Tohoku Res Ctr, Forestry & Forest Prod Res Inst, Morioka, Iwate 0200122, Japan
Hokkaido Univ, Boreal Forest Conservat Studies, Sapporo, Hokkaido 0600809, Japan

Доп.точки доступа:
Kajimoto, T...; Matsuura, Y...; Osawa, A...; Abaimov, A.P.; Zyryanova, O.A.; Isaev, A.P.; Yefremov, D.P.; Mori, S...; Koike, T...