Abstracts

Height growth of climatypes posterities from medium productive forest stands of Siberia in the provenance trial in Priangarie has two growth classes exceeding over shelterwood in the origin place. Climatypes of this group have stable high height growth relatively to control. Annual increment during last 20 years for them is 108%. Relatively low growth rate is observed for climatypes from low productive pine forests of European North, northern and north-west pine forests of Siberia, and also for climatypes from broad-leaved forests zone, forest-steppe and steppe regions of the range south. Annual increment for the last 20 years is 83%.

Dynamics analysis of height and radial increments for climatypes with the same stand density showed that for pine from southern regions and control variant maximum increments begin earlier than for pine from northern climatypes. For northern climatypes maximum radial increment begins in the age of 14-17 years, for southern – in the age of 13-14. For northern climatypes maximum height increment begin in 18-22 years old, for southern – in 13-14. Local and northern climatypes could form maximum radial increments during longer time period (from 3 to 7 years) than southern (up to 3 years). Southern climatypes are more sensitive to weather conditions in the point of trial.

Hereditary character of pine growth in the point of trial is confirmed by correlation analysis of growth features with geographic coordinates and climatic factors of climatype origin places. Height and radial growth has negative correlation with geographical latitude and positive with some climatic factors of climatype origin places.

In general, stem productivity (height, diameter, stem volume and timber volume per hectare) of pine climatypes in the provenance trial is increasing from west to east and from north to south according to origin places of their shelterwoods. Correlation coefficient shows moderate relation of these traits (climatypes number is 67). At forest valuation features in the point of trial climatypes of pine from Siberia, Ural and European North have definite advantage.

The work was made with financial support of RFBR № 07-04-00292 and RFBR-Bel. № 08-04-90001.

Note. Abstracts are published in author's edition

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© 1996-2000, Siberian Branch of Russian Academy of Science, Novosibirsk