Сводный каталог книг

[Текст] : монография / N. Ermakov, J. Dring, J. Rodwell. - Camerino : [б. и.], 2000. - 131 с. : figures + tables. - (Braun-Blanquetia/Review of geobotanical monographs, ISSN 0393-5434 ; 28). - Библиогр: p.126-129. - free of charge р.

УДК

634.9

Аннотация: The goal of the present work is a review of the classification and the ecological-geographical basis of higher syntaxonomical units of the zonal continental hemiboreal forests of North Asia. These forests, in consequence of an increased continentality of climate replace sub-atlantic and sub-pacific broad-leaved forests in the south of the forest zone and in the forest-steppe zone of Siberia and Mongolia. A complete system of classification of the forests based on both a reassessment of an earlier regional classification and an analysis of new data is presented.


Доп.точки доступа:
Rodwell, J.; Dring, J.
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[Text] : научное издание / A.-S. Moren, K. Perttu. - Uppsala : The Swedish University of Agricultural Sciences, College of Forestry, 1994. - 19 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 194). - eng. - Библиогр.: с. 18-19. - ISBN 91-576-4915-4 : 2000.00 р.

УДК

06

Аннотация: Mean temperatures for the normal period (1961-1990) from 513 stations in Sweden, together with their geographical positions, are used to derive temperature sums and average length of their growing season for different threshold values as functions of latitude and altitude. Maps are drawn showing the distribution of these temperature indices. Swedish regional average forest yield is well correlated with the temperature sums for the threshold value 5 degrees C (Pearson correlation coefficient: 0.89). Solar radiation data for the period 1983-91 from 14 stations in Sweden are used to estimate global radiation reaching the earth's surface during clear days and during days irrespective of cloudiness. This data set is also used to derive global radiation sums expressed as functions of latitude and altitude. Correlations for an approximate adjustment of temperature indices to the soil surface level and with respect to local continentality/ maritimity are proposed. The solar radiation on slopes has been calculated for various inclinations and azimuths.


Доп.точки доступа:
Perttu, K.
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ИЛ-ИФ (1)
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