Сводный каталог книг

[Text] : научное издание / E.G. Stahl. - Uppsala : The Swedish University of Agricultural Sciences, College of Forestry, 1988. - 15 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 180). - eng. - Библиогр. в конце ст. - ISBN 91-576-3480-7 : 2.00 р.

УДК

06

Аннотация: The aim of this study is to describe the magnitude and sources of provenances variation in wood density and tracheid length in Sweden. The study indicates that changes in forest management and forest tree breeding are needed in order to increase basic density and fibre length. Basic density and tracheid length were assessed in 67 provenances from one or more of 18 provenance traials at the age of 30 years. From each provenance and trial 10 trees were sampled from a 1.25 metre spacing and 10 trees from 2.0 metre spacing whenever possible. Assessments were made at growth rings five and ten respectively from the bark for basic density and at growth ring five from the bark for tracheid length.

Экземпляры всего: 1
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[Text] : научное издание / E.G. Stahl, B. Persson, F. Prescher. - Uppsala : The Swedish University of Agricultural Sciences, College of Forestry, 1990. - 16 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 184). - eng. - Библиогр. в конце ст. - ISBN 91-576-4345-8 : 1.60 р.

УДК

06

Аннотация: The study is based on a series of trials of which the southern trials were earlier analysed. This makes it possible to compare the present results wth those of the previous study. The general models for geographical variation indicate that the highest nimber of straight stems without spike knots may be found between latitudes 58 degrees and 65 degrees N and altitudes below 250 m.


Доп.точки доступа:
Persson, B.; Prescher, F.
Экземпляры всего: 1
ИЛ-ИФ (1)
Свободны: ИЛ-ИФ (1)

[Text] : научное издание / E.G. Stahl, B. Persson . - Uppsala : The Swedish University of Agricultural Sciences, College of Forestry, 1992. - 17 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 187). - eng. - Библиогр. в конце ст. - ISBN 91-576-4591-4 : 2.00 р.

УДК

06

Аннотация: The objectives of this study are as follows: 1.To describe the differences in seedling morphology and phenology existing between provenances of Black spruce. 2. To compare Black spruce with Norway spruce. 3. To elucidate the juvenile characters of value in indentifying superior provenances of Black spruce


Доп.точки доступа:
Persson , B.
Экземпляры всего: 1
ИЛ-ИФ (1)
Свободны: ИЛ-ИФ (1)

[Text] : научное издание / E.G. Stahl, U. Karlmats. - Uppsala : The Swedish University of Agricultural Sciences, College of Forestry, 1995. - 15 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 197). - eng. - Библиогр.: с. 14-15. - ISBN 91-576-5087-X : 500.00 р.

УДК

06

Аннотация: The aim of this study is to describe the wood properties, timber harvest and yield, when seed-tree or shelterwood regeneration systems are established, as compared with clear-felling. Concerning the effects on the regeneration results, no conclusions are drawn.


Доп.точки доступа:
Karlmats, U.
Экземпляры всего: 1
ИЛ-ИФ (1)
Свободны: ИЛ-ИФ (1)