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

/ D. F. Zhirnova [et al.] // Int. J. Biometeorol., DOI 10.1007/s00484-019-01811-0. - Cited References:94. - The research was supported by the Russian Foundation for Basic Research (17-04-00315, 17-44-240809). . - ISSN 0020-7128. - ISSN 1432-1254РУБ Biophysics + Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: The roles of slope orientation and elevational temperature gradient were investigated for Scots pine (Pinus sylvestris L.) growth in the middle of its growth range, where these factors can significantly modulate microclimate and thus plant growth. We assumed that slope orientation causes more complex and severe effects than elevation because it influences all three main factors of plant growth: light, heat, and moisture. In addition to the total ring width, the earlywood and latewood width and latewood ratio were considered variables that contain information about tree ring growth during the season and wood structure over all tree life span on three sampling sites at different elevations and opposite slopes. Despite the observed dependence of pine growth rate on temperature and solar radiation, the mean latewood ratio is stable and similar between all sampling sites, being presumably defined by the genotype of individual trees. The seasonality of the climatic response of tree growth is bound to spatiotemporal variation of the vegetative season timing due to the elevational temperature lapse and local warming. However, its direction is primarily defined by slope orientation, where southern slope is moisture-limited, even at adjacent sites, and divergent climatic reactions of earlywood (weak moisture-limited in the last decades) and latewood growth (temperature-limited) were revealed on the northern slope.

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Держатели документа:
Siberian Fed Univ, Khakass Tech Inst, 27 Shchetinkina, Abakan 655017, Russia.
Natl Pk Shushensky Bor, 9 Lugovaya, Shushenskoye 662710, Russia.
Siberian Fed Univ, 79 Svobodny, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, 50-28 Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Zhirnova, Dina F.; Belokopytova, Liliana V.; Barabantsova, Anna E.; Babushkina, Elena A.; Vaganov, Eugene A.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [17-04-00315, 17-44-240809]

/ D. F. Zhirnova, L. V. Belokopytova, D. M. Meko [et al.] // Sci Rep. - 2021. - Vol. 11, Is. 1. - Ст. 14266, DOI 10.1038/s41598-021-93745-0. - Cited References:80. - This research was performed within the framework of a state assignment of the Ministry of Science and Higher Education, RF (FSRZ-2020-0010), analysis of data was funded by Russian Science Foundation (19-77-30015). D. Meko's contribution was supported by Office of Polar Programs of National Science Foundation, USA (NSF-OPP #1917503).The authors are grateful to M.A. Bureeva (Khakass Technical Institute, Siberian Federal University) for implementing an algorithm (program not registered) automatically calculating dates of stable temperature crossing of thresholds from daily temperature series. . - ISSN 2045-2322РУБ Multidisciplinary Sciences

Аннотация: Regional and local climate change depends on continentality, orography, and human activities. In particular, local climate modification by water reservoirs can reach far from shore and downstream. Among the possible ecological consequences are shifts in plant performance. Tree-ring width of affected trees can potentially be used as proxies for reservoir impact. Correlation analysis and t-tests were applied to climatic data and tree-ring chronologies of Pinus sylvestris L. and Larix sibirica Ledeb. from moisture-deficit habitats in the intermontane Khakass-Minusinsk Depression, to assess modification of climate and tree growth by the Krasnoyarsk and Sayano-Shushenskoe Reservoirs on the Yenisei River. Abrupt significant cooling in May-August and warming in September-March occurred after the launch of the turbines in dams, more pronounced near the Sayano-Shushenskoe dam (up to - 0.5 degrees C in summer and to+3.5 degrees C in winter) than near the Krasnoyarsk Reservoir headwaters (- 0.3 degrees C and+1.4 degrees C). Significant lengthening of the warm season was also found for temperature thresholds 0-8 degrees C. Shifts of seasonality and intensity occurred in climatic responses of all tree-ring chronologies after development of water reservoirs. Patterns of these shifts, however, depended on species-specific sensitivity to climatic modification, distance from reservoirs, and physiographic regions. Mitigation of climate continentality and extremes by reservoirs appears to have offset possible negative effects of warming on tree growth.

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Держатели документа:
Siberian Fed Univ, Khakass Tech Inst, Abakan, Russia.
Univ Arizona, Lab Tree Ring Res, Tucson, AZ USA.
Siberian Fed Univ, Krasnoyarsk, Russia.
Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia.

Доп.точки доступа:
Zhirnova, D. F.; Belokopytova, L., V; Meko, D. M.; Babushkina, E. A.; Vaganov, E. A.; Russian Science FoundationRussian Science Foundation (RSF) [19-77-30015]; Office of Polar Programs of National Science Foundation, USA (NSF-OPP) [1917503]