Full text of this article is only available in PDF format.

Pertti Hari (email), Johan Ross, Marja Mecke

Production process of Scots pine

Hari P., Ross J., Mecke M. (1996). Production process of Scots pine. Acta Forestalia Fennica no. 254 article id 7525. https://doi.org/10.14214/aff.7525

Abstract

The accompanying collective research report is the result of the research project in 1986–90 between the Finnish Academy and the former Soviet Academy of Sciences. The project was organized around common field work in Finland and in the former Soviet Union, and theoretical analyses of tree growth determining processes. Based on theoretical analyses, dynamic stand growth models were made and their parameters were determined utilizing the field results.

Annual cycle effects the tree growth. Our theoretical approach was based on adaptation to local climate conditions from Lapland to South Russia. The initiation of growth was described as a simple low and high temperature accumulation driven model. The model was linked with long-term temperature data.

Analysis of field measurements of CO2 exchange showed that irradiance is the dominating factor causing variation in photosynthetic rate in natural conditions during summer. The penetration of irradiance into Scots pine (Pinus sylvestris L.) canopy is a complicated phenomenon. A moderately simple but balanced forest radiation regime sub-model was constructed.

The common field excursions in different geographical regions resulted in a lot of experimental data of regularities of woody structure. The water transport seems to be a good common factor to analyse these properties of tree structure. The produced theoretical and experimental material was utilized in the development of stand growth model that describes the growth and development of Scots pine stands in Finland and the former Soviet Union. The core of the model is carbon and nutrient balances. This means that carbon obtained in photosynthesis is consumed or growth and maintenance and nutrients are taken according to the metabolic need. Since the fundamental metabolic processes are the same in all locations, the same growth model structure can be applied in the large range of Scots pine. The model enables the analysis of geographical differences in the growth of Scots pine. The present approach enables utilization of structural and functional knowledge gained in places of intensive research, in the analysis of growth and development of any stand.

Keywords
Pinus sylvestris; photosynthesis; Scots pine; allocation; structure; annual cycle; irradiance; stand models; geographical features

Published in 1996

Views 1701

Available at https://doi.org/10.14214/aff.7525 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Your search results
Lippu J., (1994) Patterns of dry matter partitioning and 14C-phot.. Silva Fennica vol. 28 no. 3 article id 5529
Valkonen M.-L., Hänninen H. et al. (1990) Frost hardiness of Scots pine seedlings during d.. Silva Fennica vol. 24 no. 4 article id 5433
Smolander H., Kellomäki S. et al. (1990) The effect of nitrogen concentration on needle p.. Silva Fennica vol. 24 no. 1 article id 5414
Pukkala T., (1989) Prediction of tree diameter and height in a Scot.. Silva Fennica vol. 23 no. 2 article id 5375
Hänninen H., Pelkonen P. (1988) Effects of temperature on dormancy release in No.. Silva Fennica vol. 22 no. 3 article id 5357
Pukkala T., (1987) Effect of seed production on the annual growth o.. Silva Fennica vol. 21 no. 2 article id 5312
Kellomäki S., Hänninen H. et al. (1987) A tentative model for describing the effects of .. Silva Fennica vol. 21 no. 1 article id 5302
Kellomäki S., Hari P. et al. (1980) Eco-physiological studies on young Scots pine st.. Silva Fennica vol. 14 no. 3 article id 5079
Hari P., Kanninen M. et al. (1979) An automatic system for measurements of gas exch.. Silva Fennica vol. 13 no. 1 article id 5019
Lehtonen I., Kellomäki S. et al. (1976) Nutrient cycle in a Scots pine stand. II. Amount.. Silva Fennica vol. 10 no. 4 article id 4952
Lehtonen I., Kellomäki S. et al. (1976) Nutrient cycle in a Scots pine stand I. Seasonal.. Silva Fennica vol. 10 no. 3 article id 4946
Nikinmaa E., (1992) Analyses of the growth of Scots pine: matching s.. Acta Forestalia Fennica vol. 0 no. 235 article id 7681
Korpilahti E., (1988) Photosynthetic production of Scots pine in the n.. Acta Forestalia Fennica vol. 0 no. 202 article id 7649
Smolander H., (1984) Measurement of fluctuating irradiance in field s.. Acta Forestalia Fennica vol. 0 no. 187 article id 7634
Hari P., Kellomäki S. et al. (1982) Dynamics of early development of tree stand Acta Forestalia Fennica vol. 0 no. 177 article id 7624
Vacek S., Vacek Z. et al. (2016) Structure, regeneration and growth of Scots pine.. Silva Fennica vol. 50 no. 4 article id 1564
Jalkanen R., Hicks S. et al. (2008) Past pollen production reconstructed from needle.. Silva Fennica vol. 42 no. 4 article id 230
Sarkkola S., Hökkä H. et al. (2004) Natural development of stand structure in peatla.. Silva Fennica vol. 38 no. 4 article id 408
Kojola S., Penttilä T. et al. (2004) Impacts of different thinning regimes on the yie.. Silva Fennica vol. 38 no. 4 article id 407