Сводный каталог книг

[Текст] / A. Liomajoki. - Helsinki : The Finnish Soc. of Forest Science. The Finnish Forest Research Institute, 1999. - 35 p. : ill. - (Acta Forestalia Fennica, ISSN 0001-5636 ; 263). - Библиогр: p. 33-35%ISBN 951-40-1713-7. - 11-00 р.

УДК

06

Аннотация: The aim of this study is to analyze whether there are systematic differences in the flowering parameters, their geographical correlations or in adaption to climate between the two birch species. Are the effects of temperature and the light factor equal for both species, and do they differ from those controlling Norway spruce and Scots pine? Is Linsser's principle of proportional heat sums valid for birch species? This book studied and the other questions. To answer these questions, the within-year and the between-year variations in the timing of anthesis involved were measured and tested with the three parameters using two alternative reference points, median of anthesis and peak pollen catch day. The geographical variation of pollen catches was also measured and possible geographical correlations were sought.

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[Text] = Mannyn sopeutuminen suomen ilmastoon hedekukkimisaikojen valossa : научное издание / A. Luomajoki. - Helsinki : The Society of Forestry in Finland-The Finnish Forest Research Institute, 1993. - 27 p. : рис., табл. - (Acta Forestalia Fennica ; № 237). - eng. - Библиогр.: с. 26-27. - ISSN 0001-5636. - ISBN 951-40-1286-0 : 15.00 р.

УДК

06

Аннотация: The aim of this study was to analyse the geographical variation found in the timing of anthesis in Scots pine. In the adaptaion of the generative cycle to local climatic conditions, the geographical adaptability weighted with the so called Linsser's law is a particularly intersting point. Geographical correlations calculated against distances measured along simulated post-glacial migration routes were stronger than purely latitudinal correlations. Effects of the reinvasion of Scots pine into Finland are thus still visible in pine populations. In light of flowering phenology it seems probable that the northern populations of Scots pine in Finland have still not completely adapted to the prevailing cold climate at these latitudes. A moderate warming of the climate would therefore be beneficial for Scots pine.

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[Text] = Kuusen sopeutuminen suomen ilmastoon hedekukkimisaikojen perusteella arvioituna : научное издание / A. Luomajoki. - Helsinki : The Society of Forestry in Finland-The Finnish Forest Resaerch Institute, 1993. - 28 p. : рис., табл. - (Acta Forestalia Fennica, ISSN 0039-3150 ; № 242). - eng. - Библиогр.: с. 25-26. - ISBN 951-40-1338-7 : 600.00 р.

УДК

06

Аннотация: The aim is to study the amount of phenological variability in northern marginal stands and the effect of annual temperature sums of the previous two years on the timing of flowering and on amount of pollen production. The geographical adaptability of the generative cycle to local climate. The efficiency of two temperature sum systems, a linear and curvilinear one was compared with simple calendar time as delineators of generative development.

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