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

[Text] / V. L. Gavrikov, O. P. Sekretenko // Ecol. Model. - 1996. - Vol. 88, Is. 01.03.2013. - P183-193, DOI 10.1016/0304-3800(95)00087-9. - Cited References: 24 . - 11. - ISSN 0304-3800РУБ Ecology

Аннотация: The aim of the research was to create an algorithm simulating height-diameter relations in a pine tree subjected to various environmental impacts. The model is based on explicit description of light competition of the Scots pine twigs in three-dimensional space. The model is empirical and results from the measurements of correlations between shoots and buds in Scots pine that were made in the field. The development of the root system is not considered by the model. In simulation experiments it was demonstrated that: (i) the stand-grown pines have a higher height/diameter ratio than an open-grown model tree; (ii) an extremely high height/diameter ratio leads the tree to death; (iii) a tree suppressed for a sufficiently long time does not respond to better conditions; (iv) the diameter growth is much more sensitive to environmental change than the height growth. The model trees had the same growth parameters in every simulation. The simulated growth reactions are accounted for by self-adjustments of the model structure to the imposed conditions.

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Держатели документа:
RUSSIAN ACAD SCI,INST FOREST,KRASNOYARSK 660036,RUSSIA

Доп.точки доступа:
Gavrikov, V.L.; Sekretenko, O.P.

[Text] / V. . Ossipov [et al.] // J. Chromatogr. A. - 1996. - Vol. 721, Is. 1. - P59-68, DOI 10.1016/0021-9673(95)00765-2. - Cited References: 30 . - 10. - ISSN 0021-9673РУБ Biochemical Research Methods + Chemistry, Analytical

Аннотация: The following major phenolics with non-flavonoid structure were identified from leaves of Betula pubescens (white birch) and Betula pendula (silver birch): 1-O-galloyl-beta-d-(2-O-acetyl)-glucopyranose, 1-(4 ''-hydroxyphenyl)-3'-oxopropyl-beta-d-glucopyranose, gallic, chlorogenic, neo-chlorogenic, cis- and trans-forms of 3- and 5-p-coumaroylquinic acids. Chromatographic (analytical and preparative HPLC), chemical (hydrolysis) and spectroscopic (UV,H-1 and C-13 NMR, MS) techniques were applied for separation, isolation, purification and identification of these phenolics. Moreover, 33 low-molecular-mass phenolics were detected and quantitated and their occurrence was compared in leaves of white and silver birches.

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Держатели документа:
UNIV TURKU,ECOL ZOOL LAB,SF-20500 TURKU,FINLAND
INST FOREST,LAB ECOL BIOCHEM WOODY PLANTS,KRASNOYARSK 660036,RUSSIA

Доп.точки доступа:
Ossipov, V...; Nurmi, K...; Loponen, J...; Haukioja, E...; Pihlaja, K...