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

[Text] / J. . Kujansuu [et al.] // Ecol. Res. - 2007. - Vol. 22, Is. 4. - P582-592, DOI 10.1007/s11284-006-0062-4. - Cited References: 27 . - 11. - ISSN 0912-3814РУБ Ecology

Аннотация: An analysis was performed of the climatic responses of the radial growth of Larix gmelinii (Rupr.) Rupr. at two sites-both of which included contrasting north- and south-facing slopes-in Tura, central Siberia, with the development of ring width and maximum-density chronologies for each slope. Both residual and standard chronologies of ring widths were positively correlated with temperature from late May until mid June on all four slopes. By contrast, standard chronologies of ring widths were negatively correlated with precipitation during the winter (from October to April) and in May on the north-facing slope at site 1 and on the south-facing slope at site 2 respectively. The negative correlations with precipitation during the winter and in May on some of the slopes suggested that delayed snowmelt in early spring might inhibit the radial growth of L. gmelinii, and the effects of snow are likely to vary with topography. Both residual and standard chronologies of maximum densities were positively correlated with temperature in early July on all four slopes. Maximum densities were also positively correlated with precipitation during summer of the previous year on all the slopes. These suggest that no major differences exist in terms of responses of maximum density to climatic factors between the north- and south-facing slopes.

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Держатели документа:
Shinshu Univ, Fac Agr, Dept Forest Sci, Nagano 3994598, Japan
Gifu Univ, United Grad Sch Agr Sci, Gifu 5011193, Japan
Hokkaido Univ, Grad Sch Agr, Sapporo, Hokkaido 0600811, Japan
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Academgorodok, Krasnoyarsk 660036, Russia
Forestry & Forest Prod Res Inst, Kyushu Res Ctr, Kumamoto 8600862, Japan
Forestry & Forest Prod Res Inst, Tsukuba, Ibaraki 3058687, Japan

Доп.точки доступа:
Kujansuu, J...; Yasue, K...; Koike, T...; Abaimov, A.P.; Kajimoto, T...; Takeda, T...; Tokumoto, M...; Matsuura, Y...

[Text] / J. . Kujansuu [et al.] // J. Wood Sci. - 2007. - Vol. 53: 55th Annual Meeting of the Japan-Wood-Research-Society (MAR, 2005, Kyoto, JAPAN), Is. 2. - P87-93, DOI 10.1007/s10086-006-0837-9. - Cited References: 19 . - 7. - ISSN 1435-0211РУБ Forestry + Materials Science, Paper & Wood

Аннотация: An analysis was performed on the climatic responses of the radial growth of Larix gmelinii (Rupr.) Rupr. on contrasting north-facing and south-facing slopes in Tura, central Siberia. We developed chronologies of tree-ring width for four plots, designated as north-upper, northlower, south-upper, and south-lower. Both residual and standard chronologies of tree-ring widths exhibited a significant positive correlation with temperature from the end of May until early June in all four plots. The chronologies of ring width did not reveal any major difference in the response to temperature among the four plots. The standard chronologies of ring widths on the north-facing slope were negatively correlated with precipitation during the winter (October-April) and in early and mid-May, whereas the residual chronologies did not reveal clear relationships with precipitation during the winter and May. The significant correlation between ring width and temperature from the end of May until early June indicates that temperatures in springtime play a significant role in the radial growth of L. gmelinii. The negative correlations between standard chronologies of tree-ring width and precipitation in the winter and in May on the north-facing slope indicate that lowfrequency fluctuations in snowfall have negative effects on the radial growth. However, these effects vary and depend on the microscale topography.

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Держатели документа:
Shinshu Univ, Fac Agr, Dept Forest Sci, Nagano 3994598, Japan
Gifu Univ, United Grad Sch Agr Sci, Gifu 5011193, Japan
Hokkaido Univ, Fac Agr, Sapporo, Hokkaido 0600811, Japan
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
Kyushu Res Ctr, Forestry & Forest Prod Res Inst, Kumamoto 8600862, Japan
Forestry & Forest Prod Res Inst, Tsukuba, Ibaraki 3058687, Japan

Доп.точки доступа:
Kujansuu, J...; Yasue, K...; Koike, T...; Abaimov, A.P.; Kajimoto, T...; Takeda, T...; Tokumoto, M...; Matsuura, Y...

[Text] / A. A. Knorre, A. V. Kirdyanov, E. A. Vaganov // Oecologia. - 2006. - Vol. 147, Is. 1. - P86-95, DOI 10.1007/s00442-005-0248-4. - Cited References: 37 . - 10. - ISSN 0029-8549РУБ Ecology

Аннотация: To investigate the variability of primary production of boreal forest ecosystems under the current climatic changes, we compared the dynamics of annual increments and productivity of the main components of plant community (trees, shrubs, mosses) at three sites in the north of Siberia (Russia). Annual radial growth of trees and shrubs was mostly defined by summer temperature regime (positive correlation), but climatic response of woody plants was species specific and depends on local conditions. Dynamics of annual increments of mosses were opposite to tree growth. The difference in climatic response of the different vegetation components of the forest ecosystems indicates that these components seem to be adapted to use climatic conditions during the short and severe northern summer, and decreasing in annual production of one component is usually combined with the increase of other component productivity. Average productivity in the northern forest ecosystems varies from 0.05 to 0.14 t ha(-1)year(-1) for trees, from 0.05 to 0.18 t ha(-1)year(-1) for shrubs and from 0.54 to 0.66 t ha(-1) year(-1) for mosses. Higher values of tree productivity combined with lower annual moss productivity were found in sites in northern taiga in comparison with forest-tundra. Different tendencies in the productivity of the dominant species from each vegetation level (trees, shrubs, mosses) were indicated for the last 10 years studied (1990-1999): while productivity of mosses is increasing, productivity of trees is decreasing, but there is no obvious trend in the productivity of shrubs. Our results show that in the long term, the main contribution to changes in annual biomass productivity in forest-tundra and northern taiga ecosystems under the predicted climatic changes will be determined by living ground cover.

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Держатели документа:
RAS, SB, VN Sukachev Inst Forest, Krasnoyarsk 660036, Akademgorodok, Russia

Доп.точки доступа:
Knorre, A.A.; Kirdyanov, A.V.; Vaganov, E.A.

[Text] / M. M. Naurzbaev, M. K. Hughes, E. A. Vaganov // Quat. Res. - 2004. - Vol. 62, Is. 2. - P126-133, DOI 10.1016/j.yqres.2004.06.005. - Cited References: 35 . - 8. - ISSN 0033-5894РУБ Geography, Physical + Geosciences, Multidisciplinary

Аннотация: Regional growth curves (RGCs) have been recently used to provide a new basis for removing nonclimatic trend from tree-ring data. Here we propose a different use for RGCs and explore their properties along two transects, one meridional and the other elevational. RGCs consisting of mean ring width plotted against cambial age were developed for larch samples from 34 sites along a meridional transect (55-72degreesN) in central Siberia, and for 24 sites on an elevational gradient (1120 and 2350 in a.s.l.) in Tuva and neighboring Mongolia at approximately 51degreesN. There are systematic gradients of the parameters of the RGCs, such as I-0-maximum tree-ring width near pith, and I-min, the asymptotic value of tree-ring width in old trees. They are smaller at higher latitude and elevation. Annual mean temperature and mean May-September temperature are highly correlated with latitude here, and hence RGC parameters are correlated with these climatic variables. Correlations with precipitation are more complex, and contradictory between meridional and elevational transects. The presence of a similar gradient in the elevational transect is consistent with temperature being the causal factor for both gradients, rather than, for example, latitude-dependent patterns of seasonal photoperiod change. Taking ring measurements from collections of relict and subfossil wood, the RGC-latitude and RGC-temperature relationships are used to estimate paleo-temperatures on centennial time scales. These estimates are consistent with earlier "traditional" dendroclimatic approaches, and with independent information on the northern extent of forest growth in the early mid-Holocene. It may be possible to use this same approach to make estimates of century-scale paleo-temperatures in other regions where abundant relict wood is present. (C) 2004 Univesity of Washington. All rights reserved.

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Держатели документа:
Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA
Russian Acad Sci, Siberian Branch, Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Naurzbaev, M.M.; Hughes, M.K.; Vaganov, E.A.