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 1700

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
Nygren P., Hari P. (1992) Effect of foliar application with acid mist on t.. Silva Fennica vol. 26 no. 3 article id 5481
Hari P., Korpilahti E. et al. (1990) A field system for measuring the gas exchange of.. Silva Fennica vol. 24 no. 1 article id 5405
Häkkinen R., Hari P. (1988) The efficiency of time and temperature driven re.. Silva Fennica vol. 22 no. 2 article id 5348
Hari P., Heikinheimo P. et al. (1986) Trees as a water transport system. Silva Fennica vol. 20 no. 3 article id 5274
Mäkelä A., Hari P. et al. (1980) Eco-physiological studies on young Scots pine st.. Silva Fennica vol. 14 no. 3 article id 5080
Kellomäki S., Hari P. et al. (1980) Eco-physiological studies on young Scots pine st.. Silva Fennica vol. 14 no. 3 article id 5079
Kellomäki S., Hari P. (1980) Eco-physiological studies on young Scots pine st.. Silva Fennica vol. 14 no. 3 article id 5078
Ilonen P., Hari P. et al. (1979) On distribution of growth in crown system of you.. Silva Fennica vol. 13 no. 4 article id 5049
Haapanen T., Hari P. et al. (1979) Effect of fertilization and thinning on radial g.. Silva Fennica vol. 13 no. 2 article id 5033
Koskimäki A., Hari P. et al. (1979) Inherent growth rythm of some Larix-species grow.. Silva Fennica vol. 13 no. 1 article id 5021
Hari P., Kanninen M. et al. (1979) An automatic system for measurements of gas exch.. Silva Fennica vol. 13 no. 1 article id 5019
Hari J., Hari P. et al. (1978) An electronic auxanometer for field use. Silva Fennica vol. 12 no. 4 article id 5012
Kellomäki S., Hari P. et al. (1977) Production of structural matter by a plant commu.. Silva Fennica vol. 11 no. 4 article id 4981
Väisänen E., Hari P. et al. (1977) Annual growth level of some plant species as a f.. Silva Fennica vol. 11 no. 4 article id 4980
Kellomäki S., Hari P. et al. (1977) Annual production of some forest mosses as a fun.. Silva Fennica vol. 11 no. 1 article id 4964
Lehtonen I., Hari P. et al. (1977) On control of daily structural matter production.. Silva Fennica vol. 11 no. 1 article id 4959
Kellomäki S., Hari P. (1976) Rate of photosynthesis of some forest mosses as .. Silva Fennica vol. 10 no. 4 article id 4953
Hari P., Huhtamaa M. et al. (1976) A new approach for measuring light inside the ca.. Silva Fennica vol. 10 no. 2 article id 4937
Hari P., Lehtiniemi T. (1972) The effect of temperature and moisture on germin.. Silva Fennica vol. 6 no. 2 article id 4866
Hari P., Ross J. et al. (1996) Production process of Scots pine Acta Forestalia Fennica vol. 0 no. 254 article id 7525
Hari P., Kellomäki S. et al. (1982) Dynamics of early development of tree stand Acta Forestalia Fennica vol. 0 no. 177 article id 7624
Hallman E., Hari P. et al. (1978) Effect of planting shock on the transpiration, p.. Acta Forestalia Fennica vol. 0 no. 161 article id 7595
Aalto T., Hari P. et al. (2002) Comparison of an optimal stomatal regulation mod.. Silva Fennica vol. 36 no. 3 article id 529
Palva L., Garam E. et al. (1998) Utilizing a multipoint measuring system of photo.. Silva Fennica vol. 32 no. 4 article id 673
Mäkelä A., Givnish T. J. et al. (2002) Challenges and opportunities of the optimality a.. Silva Fennica vol. 36 no. 3 article id 528