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

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Найдено документов в текущей БД: 43

    Reserves of carbon in the organic matter of postfire pine forests in the southwest of the Baikal region
/ 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 1995-4255
РУБ Ecology

Кл.слова (ненормированные):
phytomass -- stand -- grass bush layer -- easily mineralizable and stable organic soil matter -- fire intensity

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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Держатели документа:
[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.

    Organic substances in the artificial forest ecosystems created on overburden dumps of open-cut coal mines in Middle Siberia
[Text] / L. S. Shugalei // Biol. Bull. - 2010. - Vol. 37, Is. 4. - P423-431, DOI 10.1134/S1062359010040138. - Cited References: 26. - This work was supported by the Russian Foundation for Basic Research (project Siberia no. 09-04-98013). . - 9. - ISSN 1062-3590
РУБ Biology

Аннотация: The stock and structure of organic substances in the pine tree plantations on the overburden dumps of open-cut coal mines in Middle Siberia have been determined. It has been shown that the forming forest biogeocenoses differ from the natural phytocenoses and soils of the forest landscapes in the structure of the carbon pool and its distribution between the vegetation and soil components. In artificial forest ecosystems, the bulk of the plant component is accumulated in the aboveground part of the forest stand (40-59%). The aboveground grass cover contains only 0.1-1.4% of the total phytomass stock of the ecosystem. The annual accumulation of organic substances in the initial soils amounts to 0.28-1.45 t/ha.

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Scopus

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

Доп.точки доступа:
Shugalei, L.S.

    Correlation between the morphogenetic types of litter and their properties in bog birch forests
[Text] / T. T. Efremova, S. P. Efremov, A. F. Avrova // Eurasian Soil Sci. - 2010. - Vol. 43, Is. 8. - P858-866, DOI 10.1134/S106422931008003X. - Cited References: 11. - This work was supported by the Russian Foundation for Basic Research, project no. 08-04-92501. . - 9. - ISSN 1064-2293
РУБ Soil Science

Аннотация: A formalized arrangement of morphogenetic types of litter according to the physicochemical parameters provided their significant grouping in three genetic associations. The litter group (highly decomposed + moderately decomposed) is confined to the tall-grass group of bog birch forests. The rhizomatous (roughly decomposed) litter is formed in the sedge-reed grass bog birch forests. The litter group (peaty + peatified + peat) is associated with the bog-herbaceous-moss group of forest types. The genetic associations of the litters (a) reliably characterize the edaphic conditions of bog birch forests and (b)correspond to formation of the peat of certain ecological groups. We found highly informative the acid-base parameters, the exchangeable cations (Ca(2+) + Mg(2+)) and the total potential acidity, which differentiated the genetic associations of litter practically with 100% probability. The expediency of studying litters under groups of forest types rather than under separate types of bog birch forests was demonstrated.

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Scopus

Держатели документа:
[Efremova, T. T.
Efremov, S. P.
Avrova, A. F.] Russian Acad Sci, Sukachev Inst Forestry, Siberian Div, Akad Gorodok, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Efremova, T.T.; Efremov, S.P.; Avrova, A.F.

    Assessment of vegetable cover in techogenically affected areas in the outskirts of Noril'sk
[Text] / G. S. Varaksin, G. V. Kuznetsova // Contemp. Probl. Ecol. - 2008. - Vol. 1, Is. 4. - P505-508, DOI 10.1134/S1995425508040176. - Cited References: 26 . - 4. - ISSN 1995-4255
РУБ Ecology

Аннотация: The paper reports analytical data on vitality of tree, shrub, subshrub, and grass flora in a number of areas technogenically damaged by industrial emissions.

Полный текст,
WOS

Держатели документа:
[Varaksin, G. S.
Kuznetsova, G. V.] RAS, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Varaksin, G.S.; Kuznetsova, G.V.

    Carbon balance assessment of a natural steppe of southern Siberia by multiple constraint approach
[Text] / L. B. Marchesini [et al.] // Biogeosciences. - 2007. - Vol. 4, Is. 4. - P581-595. - Cited References: 64 . - 15. - ISSN 1726-4170
РУБ 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...

    Landsat-based analysis of insect outbreaks in southern Siberia
[Text] / V. I. Kharuk [et al.] // Can. J. Remote Sens. - 2003. - Vol. 29, Is. 2. - P286-297. - Cited References: 15 . - 12. - ISSN 1712-7971
РУБ Remote Sensing
Рубрики:
DEFOLIATION

Аннотация: Landsat data were used to examine the effect of large-scale insect outbreaks in the forests of southern Siberia. Two insect outbreaks were studied: Ket-Chulym, similar to1.5 million hectares of forest damaged between 1954 and 1957; and Priangar'e, similar to0.5-0.7 million hectares of forest damaged between 1994 and 1996. Landsat scenes from 1980 to 2000 were analyzed. The optimal Landsat channels combination for detecting damage classes were bands 2 (0.525-0.605 mum), 4 (0.750-0.900 mum), 5 (1.55-1.75 mum), and 6 (10.40-12.50 mum). The damage to the forests caused an increase inradiometric temperature (20.20 +/- 0.04degreesC for damaged forests versus 19.47 +/- 0.02degreesC for healthy forests). The following pattern of forest succession was observed in the outbreak areas: dead stands with dense grass and shrub communities, burn scars, grass and shrub formations, open woodlands, closed young and middle-age birch stands, mature birch stands, and mixed conifer-deciduous stands. Forest regeneration goes through long-term species-change successions, and the rate depends on the size of the outbreak area. On-ground mapping after the outbreak and later Landsat analysis showed that even 45 years after the Ket-Chulym outbreak the area of forests did not increase. In the Priangar'e area approximately 45% of damaged forests have recovered.

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Держатели документа:
NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
VN Sukachev Inst Forest, Krasnoyarsk, Russia

Доп.точки доступа:
Kharuk, V.I.; Ranson, K.J.; Kuz'michev, V.V.; Im, S...

    Homeostasis of forest ecosystems of East Sayan
[Text] / V. . Vlasenko // Ekol. Bratisl. - 2003. - Vol. 22, Is. 1. - P16-22. - Cited References: 22 . - 7. - ISSN 1335-342X
РУБ Ecology
Рубрики:
TEMPERATURE
Кл.слова (ненормированные):
primary and conditionally primary forests -- map of ground vegetation -- dynamic tendencies -- Holocene -- biodiversity -- homeostasis

Аннотация: Making the map of ground vegetation and analysis of its present state have been realized as well as dynamic tendencies in development of forest communities from climatic optimum of the Holocene up to the present time have been revealed. Forests of the reserve are mainly overmatured. Presently the succession of mountain taiga- and grass larch and pine forests by fir stands occurs. As a reason for changing formation composition of the main forest forming tree species of the reserve the global climatic changes of the northern hemisphere are. Floristic abundance of forest communities is characterized by high variability. a-diversity increases from the mountain taiga altitude - vegetation belt to the belt of subtaiga forest-steppe what corresponds to the increase of heat providing gradient. High coefficient of beta-diversity value variation in taiga and grass forest ecotone as well as in old cutting areas of light-coniferous forests shows instability of these phytocoenoses and rather fast succession of coenoelements of light-coniferous formations by the dark-coniferous ones.

WOS,
Scopus

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

Доп.точки доступа:
Vlasenko, V...

    Carbon emission by soils in forests damaged by the Siberian moth
[Text] / Y. N. Baranchikov, V. D. Perevoznikova, Z. V. Vishnyakova // Russ. J. Ecol. - 2002. - Vol. 33, Is. 6. - P398-401, DOI 10.1023/A:1020947413854. - Cited References: 21 . - 4. - ISSN 1067-4136
РУБ Ecology
Рубрики:
MICROBIAL BIOMASS
   RESPIRATION

Кл.слова (ненормированные):
Siberian moth -- carbon emission -- defoliation -- zoogenic fall

Аннотация: In the southern-taiga low grass-green moss fir forest completely defoliated by the Siberian moth, the rate of soil respiration in the third year after the pest population outbreak was 1.5 times higher than in an undisturbed tree stand. This was explained by a significant increase in the abundance and activity of soil microorganisms in the pest-defoliated forest, which occurred due to the qualitative changes in the litter composition and the increased temperature and moisture in the upper soil layers. The rate of carbon emission from the soil in the defoliated forest was 41.7 kg/ha per day, compared to 28.3 kg/ha per day in the undisturbed fir forest.

Scopus,
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Держатели документа:
Russian Acad Sci, Sukachev Inst Forestry, Siberian Branch, Akademgorodok, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Baranchikov, Y.N.; Perevoznikova, V.D.; Vishnyakova, Z.V.

    Geobotanical indication of the state of suburban forests (an example of birch grove in Akademgorodok, Krasnoyarsk)
[Текст] / V. D. Perevoznikova, O. N. Zubareva // Russ. J. Ecol. - 2002. - Vol. 33, Is. 1. - С. 1-6, DOI 10.1023/A:1013628002614. - Cited References: 24 . - 6. - ISSN 1067-4136
РУБ Ecology

Кл.слова (ненормированные):
recreation -- phytoindication -- ruderal groups -- trampling -- glade-clump communities

Аннотация: The influence of recreation activity on grass cover was studied in a herbaceous birch forest within a territory of city development. Effects of the activity depended on size and arrangement of recreation sites. It was found that most of the forest was at the second stage of degradation, while degradation of forest edges was considered as intermediate between the second and third stages. Forest edges and glade-clump communities play a particular role in maintaining the stability of recreational forests. These ecotones are both barriers preventing introduction of alien plant species into a cenosis and centers of dissemination of ruderal and meadow species.

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Scopus

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

Доп.точки доступа:
Perevoznikova, V.D.; Zubareva, O.N.

    Dynamics of grass vegetation formation in south Siberian taiga felling sites
[Текст] / V. D. Perevoznikova // Izv. Akad. Nauk Ser. Biol. - 1998. - Is. 2. - С. 283-291. - Cited References: 10 . - 9. - ISSN 0002-3329
РУБ Biology

Аннотация: A dynamics of grass vegetation formation in dark coniferous and pine forest felling sites of different antiquity in Siberia has been studied. At the initial stages of succession, grass serves as an edifier of the newly formed community and levels the heterogeneity of edaphic background due to forest logging. The conditions are created for redistribution of environmental resources and utilization of the after-felling remains. Besides, grass growth facilitates soil decompaction at the felling sites that suffered a strong technogenic pressure. Vegetation in felling sites in the dark coniferous forests occurs in mosaic patterns with introduction of explerent species, and proceeds much faster than in the pine forests. Trees and shrubs grow better in the dark coniferous forest felling sites. Grass plays a leading ecological and coenotic role at an early stage of forest successions of south Siberian taiga despite some differences in a rate and intensity of its growth in the dark coniferous and pine forest felling sites.

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Scopus

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

Доп.точки доступа:
Perevoznikova, V.D.

    Formalized analysis of associativity of morphogenetic types and humus condition of ground litter in marsh birch forests
[Text] / T. T. Efremova, A. F. Avrova, S. P. Efremov // Contemp. Probl. Ecol. - 2013. - Vol. 6, Is. 5. - P569-577, DOI 10.1134/S199542551305003X. - Cited References: 21. - This work was supported by the Russian Foundation for Basic Research, project no. 08-04-92501 . - 9. - ISSN 1995-4255
РУБ Ecology
Рубрики:
ECOSYSTEMS
   DYNAMICS

Кл.слова (ненормированные):
marsh birch forests -- litter types -- fraction-group composition of the organic matter

Аннотация: There are six morphogenetic types of forest ground litter in the gradient of big grass-sphagnous-dead litter marsh birch forest: deeply degraded litter, half degraded litter, rhizomatous litter (coarsely degraded), peaty litter, turfy-formed litter, and turfy litter. The specificity of their biochemical transformations is caused by the accumulation of humic acids (HA), especially of the first fraction (HA-1), alongside the relatively steady background formation of fulvic acids. The C/N value suggests that the intensity of HA-1 formation is closely associated with the biological activity of the substrate. However, the indistinct difference of these parameters in the forestry-morphological types of litters limits their diagnostic reliability. Grouped biochemical types of litters, such as "soft" (half- and deeply degraded), "intermediate" (rhizomatous, peaty and turfy-formed), and "coarse" (mossy), are considerably discriminated by both the C/N ratio (20, 30, 40) and the level of HA-1 (14, 10, and 6%) respectively.

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Полный текст,
Scopus

Держатели документа:
[Efremova, T. T.
Avrova, A. F.
Efremov, S. P.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Efremova, T. T.; Avrova, A. F.; Аврова, Ада Федоровна; Efremov, S. P.; Russian Foundation for Basic Research [08-04-92501]

    Effects of repeated fires on ecosystem C and N stocks along a fire induced forest/grassland gradient
/ C. H. Cheng [et al.] // J. Geophys. Res.-Biogeosci. - 2013. - Vol. 118, Is. 1. - P215-225, DOI 10.1002/jgrg.20019. - Cited References: 56. - This study was supported by the National Science Council of Taiwan and the cooperative grant from the National Science Council of Taiwan and the Siberian Branch of the Russian Academy of Sciences. We gratefully acknowledge Dr. Julie Major for her helpful comments and review. We also thank Yin-Ru Lin, Chih-Yu Hung, Da-Fun Lin, Chung-Yu Lee, and Chang-Ya Chen for their valuable assistance during field work. . - 11. - ISSN 2169-8953
РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: Repeated fires might have different effect on ecosystem carbon storage than a single fire event, but information on repeated fires and their effects on forest ecosystems and carbon storage is scarce. However, changes in climate, vegetation composition, and human activities are expected to make forests more susceptible to fires that recur with relatively high frequency. In this study, the effects of repeated fires on ecosystem carbon and nitrogen stocks were examined along a fire-induced forest/grassland gradient wherein the fire events varied from an unburned forest to repeatedly burned grassland. Results from the study show repeated fires drastically decreased ecosystem carbon and nitrogen stocks along the forest/grassland gradient. The reduction began with the disappearance of living tree biomass, and followed by the loss of soil carbon and nitrogen. Within 4 years of the onset of repeated fires on the unburned forest, the original ecosystem carbon and nitrogen stocks were reduced by 42% and 21%, respectively. Subsequent fires caused cumulative reductions in ecosystem carbon and nitrogen stocks by 68% and 44% from the original ecosystem carbon and nitrogen stocks, respectively. The analyses of carbon budgets calculated by vegetation composition and stable isotopic delta C-13 values indicate that 84% of forest-derived carbon is lost at grassland, whereas the gain of grass-derived carbon only compensates 18% for this loss. Such significant losses in ecosystem carbon and nitrogen stocks suggest that the effects of repeated fires have substantial impacts on ecosystem and soil carbon and nitrogen cycling. Citation: Cheng, C.-H., Y.-S. Chen, Y.-H. Huang, Chiou C.-R., C.-C. Lin, and O. V. Menyailo (2013), Effects of repeated fires on ecosystem C and N stocks along a fire induced forest/grassland gradient, J. Geophys. Res. Biogeosci., 118, 215-225, doi:10.1002/jgrg.20019

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Полный текст

Держатели документа:
[Cheng, Chih-Hsin
Chen, Yung-Sheng
Huang, Yu-Hsuan
Chiou, Chyi-Rong] Natl Taiwan Univ, Sch Forestry & Resource Conservat, Taipei 106, Taiwan
[Lin, Chau-Chih] Taiwan Forestry Res Inst, Div Forestry Protect, Taipei, Taiwan
[Menyailo, Oleg V.] Inst Forest SB RAS, Krasnoyarsk, Russia

Доп.точки доступа:
Cheng, C.H.; Chen, Y.S.; Huang, Y.H.; Chiou, C.R.; Lin, C.C.; Menyailo, O.V.

    Activity of denitrification and dynamics of N2O release in soils under six tree species and grassland in central Siberia
[Text] / O. V. Menyailo, B. . Huwe // J. Plant Nutr. Soil Sci.-Z. Pflanzenernahr. Bodenkd. - 1999. - Vol. 162, Is. 5. - P533-538, DOI 10.1002/(SICI)1522-2624(199910)162:5533::AID-JPLN5333.3.CO;2-2. - Cited References: 17 . - 6. - ISSN 1436-8730
РУБ Agronomy + Plant Sciences + Soil Science
Рубрики:
NITROUS-OXIDE
   PASTURE SOIL

   NITRATE

Кл.слова (ненормированные):
denitrification -- forest soils -- grassland -- N2O production -- N2O consumption -- N2O reductase

Аннотация: To clarify the influence of tree species on N2O emissions, soil chemical properties, initial concentrations of denitrifying enzymes and dynamics of N2O emissions were studied in the laboratory under standardized conditions in soil samples from artificially afforested spots with spruce, birch, pine, aspen, larch, cedar and under grass as control. 26 years of tree development caused changes not only in soil chemistry but also in persistence and dynamics of denitrifying enzymes. Total amount of N2O release correlated more with the initial status of N2O-reductase than with N2O-producing enzymes. C:N ratio was the main chemical factor explaining variation of N2O emission between species. At equal level of atmospheric N-deposition, N2O release will increase in the order: grassland < larch < pine < spruce < cedar < aspen < birch. These data may be useful to predict N2O losses from forest ecosystems in Siberia with different dominant tree species.

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Держатели документа:
RAS, SB, Inst Forest, Krasnoyarsk 660036, Russia
Univ Bayreuth, Dept Soil Phys, D-95440 Bayreuth, Germany

Доп.точки доступа:
Menyailo, O.V.; Huwe, B...

    An experimental burn to restore a moth-killed boreal conifer forest, Krasnoyarsk Region, Russia
/ E. N. Valendik [et al.] // Mitigation and Adaptation Strategies for Global Change. - 2006. - Vol. 11, Is. 4. - P883-896, DOI 10.1007/s11027-005-9017-2 . - ISSN 1381-2386
Аннотация: Mechanical treatment and prescribed fire were used to restore a mixed conifer stand (Picea-Abies-Pinus) following mortality from an outbreak of Siberian moth (Dendrolimus superans sibiricus). Moth-killed stands often become dominated by Calamagrostis, a sod-forming grass. The large amount of woody debris and the sod hinder coniferous seedling establishment and development as well as creating conditions favorable to the establishment and propagation of wildfires. Fire has been demonstrated to be an effective method of reducing woody debris and eliminating sod, but the random nature and timing of wildfires often do not create conditions favorable for conifer regeneration. Our study was conducted in a mature fir dominated stand that died during an outbreak 6-8 years previously with most of the dead trees still standing. A bulldozer drove through the stand downing standing snags in late summer with 15-20 m between passes. Snags knocked down by the bulldozer and additional snag fall throughout the following winter increased downed dead wood 50-60% and large downed dead wood 80% compared to an adjacent untreated area. In June, a prescribed fire was set and fuel load consumption averaged 70%. Average soil temperatures during the burn ranged from 47В°C at a depth of 2 cm to 10В°C at 10 cm; hot enough to kill the grass. Following treatment, the potential for wildfire was reduced and the area was suitable for either natural conifer regeneration or planting without further mechanical site preparation. В© Springer 2006.

Scopus

Держатели документа:
V.N. Sukachev Institute of Forest, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation
USDA Forest Service, Northeastern Research Station, Durham, NH 03824, United States
USDA Forest Service, Missoula, MT 59807, United States
USDA Forest Service, Tahoe National Forest, Nevada City, CA 95959, United States

Доп.точки доступа:
Valendik, E.N.; Brissette, J.C.; Kisilyakhov, Y.K.; Lasko, R.J.; Verkhovets, S.V.; Eubanks, S.T.; Kosov, I.V.; Lantukh, A.Yu.

    Influence of logging on the effects of wildfire in Siberia
[Text] / E. A. Kukavskaya [et al.] // Environ. Res. Lett. - 2013. - Vol. 8, Is. 4. - Ст. 45034, DOI 10.1088/1748-9326/8/4/045034. - Cited References: 43. - The authors gratefully acknowledge financial support for this research from the National Aeronautics and Space Administration (NASA), the Land Cover Land Use Change (LCLUC) Science Program, the Russian Foundation for Basic Research (grant No. 12-04-31258), and the Russian Academy of Sciences, Siberian Branch. The authors would like to thank the three anonymous reviewers for their helpful comments and useful suggestions. . - 11. - ISSN 1748-9326
РУБ Environmental Sciences + Meteorology & Atmospheric Sciences
Рубрики:
FOREST
   COVER

   MODIS

   AREAS

Кл.слова (ненормированные):
light conifer stands -- Pinus -- Larix -- fire -- clear-cuts -- partial logging -- legal and illegal logging -- fuel consumption -- carbon emissions -- regeneration

Аннотация: The Russian boreal zone supports a huge terrestrial carbon pool. Moreover, it is a tremendous reservoir of wood products concentrated mainly in Siberia. The main natural disturbance in these forests is wildfire, which modifies the carbon budget and has potentially important climate feedbacks. In addition, both legal and illegal logging increase landscape complexity and affect burning conditions and fuel consumption. We investigated 100 individual sites with different histories of logging and fire on a total of 23 study areas in three different regions of Siberia to evaluate the impacts of fire and logging on fuel loads, carbon emissions, and tree regeneration in pine and larch forests. We found large variations of fire and logging effects among regions depending on growing conditions and type of logging activity. Logged areas in the Angara region had the highest surface and ground fuel loads (up to 135 t ha(-1)), mainly due to logging debris. This resulted in high carbon emissions where fires occurred on logged sites (up to 41 tC ha(-1)). The Shushenskoe/Minusinsk and Zabaikal regions are characterized by better slash removal and a smaller amount of carbon emitted to the atmosphere during fires. Illegal logging, which is widespread in the Zabaikal region, resulted in an increase in fire hazard and higher carbon emissions than legal logging. The highest fuel loads (on average 108 t ha(-1)) and carbon emissions (18-28 tC ha(-1)) in the Zabaikal region are on repeatedly burned unlogged sites where trees fell on the ground following the first fire event. Partial logging in the Shushenskoe/Minusinsk region has insufficient impact on stand density, tree mortality, and other forest conditions to substantially increase fire hazard or affect carbon stocks. Repeated fires on logged sites resulted in insufficient tree regeneration and transformation of forest to grasslands. We conclude that negative impacts of fire and logging on air quality, the carbon cycle, and ecosystem sustainability could be decreased by better slash removal in the Angara region, removal of trees killed by fire in the Zabaikal region, and tree planting after fires in drier conditions where natural regeneration is hampered by soil overheating and grass proliferation.

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Держатели документа:
[Kukavskaya, E. A.
Ivanova, G. A.
Zhila, S. V.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Buryak, L. V.
Kalenskaya, O. P.] Siberian State Technol Univ, Krasnoyarsk 660049, Russia
[Conard, S. G.] US Forest Serv, Rocky Mt Res Stn, Missoula, MT 59807 USA
[Conard, S. G.] George Mason Univ, Fairfax, VA 22030 USA
[McRae, D. J.] Canadian Forest Serv, Nat Resources Canada, Sault Ste Marie, ON P6A 2E5, Canada
ИЛ СО РАН

Доп.точки доступа:
Kukavskaya, E.A.; Buryak, L.V.; Ivanova, G.A.; Conard, S.G.; Kalenskaya, O.P.; Zhila, S.V.; McRae, D.J.; National Aeronautics and Space Administration (NASA); Land Cover Land Use Change (LCLUC) Science Program; Russian Foundation for Basic Research [12-04-31258]; Russian Academy of Sciences, Siberian Branch

    The analysis of flame spread through forest fuel
/ E. V. Konev, A. I. Sukhinin // Combustion and Flame. - 1977. - Vol. 28, Is. C. - P217-223 . - ISSN 0010-2180

Кл.слова (ненормированные):
FORESTRY - Fire Protection -- FLAME RESEARCH

Аннотация: The flame-spread process through layers of some forest fuels (needles, grass etc.) has been analysed by taking fuel inhomogeneity as the factor controlling the formation of local flames at the leading edge of the flame front. It has been assumed that fuel heating ahead of the flame front is performed by radiation with heat losses due to convection; where the fuel and the flame are in direct contact, fuel is heated by radiation and convection together. The contribution of radiation in the heat balance of the spreading front for the bed of Pinus silvestris fallen needles has been estimated by temperature and radiation measurements and by painting the fuel (i.e., by two independent methods). It ranges from about 8% near the flame-spread limit to 37% under certain conditions. В© 1977.

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Полный текст

Держатели документа:
V. N. Sukachyev Institute of Forest and Wood, USSR Academy of Sciences, Siberian Branch, Krasnoyarsk, Academgorodok, USSR

Доп.точки доступа:
Konev, E.V.; Sukhinin, A.I.

    Spatial structure of acid properties of litter in the succession row of swamp birch woods
[Text] / T. T. Efremova [et al.] // Biol. Bull. - 2014. - Vol. 41, Is. 3. - P284-295, DOI 10.1134/S106235901305004X. - Cited References: 34. - This study was supported by Program no. 30 of the Presidium of the Russian Academy of Sciences (project no. 11 of the Siberian Branch, Russian Academy of Sciences). . - ISSN 1062-3590. - ISSN 1026-3470
РУБ Biology
Рубрики:
SOIL PROPERTIES
   PEAT

Аннотация: The general potential, exchange, and actual (pH) acidities were investigated in the litter of the succession row of swamp birch woods. Their variabilities constitute, respectively, 75.9-174.4, 3.7-25.8 mmol (+)/100 g of the sampling, 3.7-5.5. For the first time, using the methods of geostatistics, their spatial variability was analyzed and the contributions of the trend, autocorrelation component, and the radius of the spatial correlation were estimated. It was established that in combination with the woody plants detritus, which is uniformly distributed along the ecological profile, the specific composition of the grass-moss tier, which corresponds to the humidity of edaphon, forms the picture of the spatial structure of acid properties of the litter. It was noted that the prime cause of variability consists in the particularities of the water regime of the habitats of swamp birch woods.

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Держатели документа:
[Efremova, T. T.
Sekretenko, O. P.
Avrova, A. F.
Efremov, S. P.] Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
ИЛ СО РАН

Доп.точки доступа:
Efremova, T.T.; Sekretenko, O.P.; Avrova, A.F.; Efremov, S.P.; Presidium of the Russian Academy of Sciences [30]; Siberian Branch, Russian Academy of Sciences [11]

    Structure of ground vegetation in Siberian spruce cultures planted with different densities
/ I. A. Goncharova, R. S. Sobachkin // Russ. J. Ecol. - 2015. - Vol. 46, Is. 4. - P309-316, DOI 10.1134/S1067413615040098 . - ISSN 1067-4136

Кл.слова (ненормированные):
herb–dwarf shrub layer -- moss–lichen layer -- plantations of different densities -- species composition -- Bryophyta -- Picea

Аннотация: The species composition of ground vegetation has been studied in 25-year spruce cultures of different densities in the southern taiga subzone of central Siberia (Krasnoyarsk krai). The parcellar structure and total coverage of ground vegetation layer have been evaluated. Changes in the species diversity, coverage, and parcellar structure of the herb-grass and moss-lichen layer depending on tree stand density have been analyzed. © 2015, Pleiades Publishing, Ltd.

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

Доп.точки доступа:
Goncharova, I.A.; Sobachkin, R.S.

    Changes in the vegetation cover and soils under natural overgrowth of felled areas in fir forests of the Yenisei Ridge
/ O. V. Trefilova, D. Y. Efimov // Eurasian Soil Sci. - 2015. - Vol. 48, Is. 8. - P792-801, DOI 10.1134/S1064229315080098 . - ISSN 1064-2293
Аннотация: The results of the integrated analysis of changes in the state of vegetation and soils (Cutanic Albeluvisol) at the different stages of natural forest regeneration (4-, 11- and 24-year-old felled areas) and in a mature fir forest of the short grass-green moss forest types in the northern part of the western slope of the Yenisei Ridge are presented. A dynamic trend of fir forests restoration to the formation of the structure characteristics of the initial forest types is shown to be performed through the stages of forest meadows and secondary short grass (forbs) and birch stands. The changes in vegetation are accompanied by the fast transformation of the soil properties towards the improvement of soil fertilization However, these changes are temporary. © 2015, Pleiades Publishing, Ltd.

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Держатели документа:
Sukachev Institute of Forest, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Trefilova, O.V.; Efimov, D.Y.

    Energy and mass exchange and the productivity of main Siberian ecosystems (from Eddy covariance measurements). 1. heat balance structure over the vegetation season
/ N. M. Tchebakova [et al.] // Biol. Bull. - 2015. - Vol. 42, Is. 6. - P570-578, DOI 10.1134/S1062359015660012 . - ISSN 1062-3590

Аннотация: Direct measurements of heat balance (latent heat and sensible heat fluxes) by the eddy covariance method, undertaken in 1998–2000 and 2002–2004, are used to obtain information on the daily, seasonal, and annual dynamics of energy and mass exchange between the atmosphere and the typical ecosystems of Siberia (middle taiga pine forest, raised bog, and true four grass steppe with data for typical tundra) along the Yenisei meridian (90° E). © 2015, Pleiades Publishing, Inc.

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Держатели документа:
Sukachev Institute of Forestry, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/28, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, Russian Federation
Sventokshistkaya Academy, Institute of Geography, Jan Kochanowski University, ul. Sweintokrzyska 15, Kielce, Poland
Department of Earth and Ecosystem Science, Lund University, Solvegatan 12, Lund, Sweden
Department of Forest Resources and Environment, Tuscia University, Via del San Camillo de Lellis, Viterbo, Italy
Max Planck Institute for Biogeochemistry, Hans Knoll str. 10, Jena, Germany
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii pr. 33, Moscow, Russian Federation

Доп.точки доступа:
Tchebakova, N. M.; Vygodskaya, N. N.; Arneth, A.; Marchesini, L. B.; Kolle, O.; Kurbatova, Y. A.; Parfenova, E. I.; Valentini, R.; Vaganov, E. A.; Schulze, E.-D.