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

/ J. . Krepkowski [et al.] // New Phytol. - 2013. - Vol. 199, Is. 2. - P431-440, DOI 10.1111/nph.12266. - Cited References: 56. - We are indebted to the German Research Foundation for funding this project (BR 1895/15). We are grateful to the two anonymous reviewers for their constructive comments, which helped us to improve the quality of the paper. . - 10. - ISSN 0028-646XРУБ Plant Sciences

Аннотация: We present an intra-annual stable carbon isotope (13C) study based on a labeling experiment to illustrate differences in temporal patterns of recent carbon allocation to wood structures of two functional types of trees, Podocarpus falcatus (a late-successional evergreen conifer) and Croton macrostachyus (a deciduous broadleaved pioneer tree), in a tropical mountain forest in Ethiopia. Dendrometer data, wood anatomical thin sections, and intra-annual 13C analyses were applied. Isotope data revealed a clear annual growth pattern in both studied species. For P.falcatus, it was possible to synchronize annual 13C peaks, wood anatomical structures and monthly precipitation patterns. The labeling signature was evident for three consecutive years. For C.macrostachyus, isotope data illustrate a rapid decline of the labeling signal within half a year. Our 13C labeling study indicates a distinct difference in carryover effects between trees of different functional types. A proportion of the labeled 13C is stored in reserves of wood parenchyma for up to 3yr in P.falcatus. By contrast, C.macrostachyus shows a high turnover of assimilates and a carbon carryover effect is only detectable in the subsequent year.

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[Krepkowski, Julia
Braeuning, Achim] Univ Erlangen Nurnberg, Inst Geog, D-91054 Erlangen, Germany
[Gebrekirstos, Aster] World Agroforestry Ctr, Nairobi, Kenya
[Shibistova, Olga] Leibniz Univ Hannover, Inst Soil Sci, D-30419 Hannover, Germany
[Shibistova, Olga] Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

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Krepkowski, J...; Gebrekirstos, A...; Shibistova, O...; Brauning, A...

/ J. Gao [et al.] // Trees Struct. Funct. - 2019, DOI 10.1007/s00468-019-01813-w . - Article in press. - ISSN 0931-1890
Аннотация: Key message: We investigate the intra-annual growth patterns of Chinese pine in Helan Mountains, confirming that regional water status plays a dominated role in stem radial increment. Abstract: The associations between environmental conditions and stem radial increment (SRI) are useful for assessing a species’ growth response to climate change. Intra-annual SRI dynamics of Chinese pine (Pinus tabulaeformis) were monitored half-hourly by automatic point dendrometer during the growing season (May–September) in 2016 and 2017 at two altitudes in the Helan Mountains, northern central China. Here, we compared the seasonal growth patterns between two altitudes and 2 years. Trees at low altitude are characterized by earlier cessation, shorter growing season, and lower growth rate, resulting in less annual growth, which may reflect the greater drought intensified by rising temperature at low altitude. June precipitation significantly affected tree growth rate. The xylem growth was active when daily mean air temperature was 9.9 °C at our study region for P. tabulaeformis in an arid environment. During the growing season, daily stem radial increment showed a significantly positive correlation with precipitation and a negative correlation with daily air temperature at all altitudes. Climatic variables associated with tree water status, namely precipitation, vapor pressure deficit, and relative humidity, played important roles in daily stem radial increment as the same result as a linear mixed model. These factors drive the complex physiological processes of stem radial increment by influencing the moisture available to the tree. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

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Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 73000, China
University of Chinese Academy of Sciences, Beijing, 10048, China
Institute of Geography, University of Erlangen-Nurnberg, Erlangen, 91058, Germany
Mathematical Methods and Information Technology Department, Siberian Federal University, Krasnoyarsk, 660075, Russian Federation
Laboratory of Tree-Ring Structure, V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

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Gao, J.; Yang, B.; He, M.; Shishov, V.