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

Pertti Hari (email), Eeva Korpilahti, Toivo Pohja, Pentti K. Räsänen

A field system for measuring the gas exchange of forest trees.

Hari P., Korpilahti E., Pohja T., Räsänen P. K. (1990). A field system for measuring the gas exchange of forest trees. Silva Fennica vol. 24 no. 1 article id 5405. https://doi.org/10.14214/sf.a15557

Abstract

A third generation of forest tree gas exchange measuring system design for the use in the field is described. The system is designed to produce data for determining the dependence of the rate of tree photosynthesis, respiration and transpiration on environmental factors. The system consists of eight cuvettes, a tubing system, two infrared gas analysers, an air flow controller, a data logger, and a computer. The measuring cuvette is a clap type, i.e. it is mostly open, only closing during measurement. CO2 exchange is measured as the change in the cuvette concentration of CO2, and, transpiration is measured as the increase in water vapour concentration while the cuvette is closed. The environmental factors measured are temperature, irradiance and air pressure. The system was planned in 1987 and constructed in 1988. It worked reliably in late summer 1988 and the quality of data seems to be satisfactory. 

The PDF includes an abstract in Finnish.

Keywords
photosynthesis; CO2; monitoring; measuring methods; transpiration; environment; gas exchange; respiration

Published in 1990

Views 2950

Available at https://doi.org/10.14214/sf.a15557 | 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
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
Hari P., Heikinheimo P. et al. (1986) Trees as a water transport system. Silva Fennica vol. 20 no. 3 article id 5274
Korpilahti E., (2018) Silva Fennica’s latest quarter centennial publis.. Silva Fennica vol. 52 no. 5 article id 10122
Korpilahti E., (2012) From the Editor Silva Fennica vol. 46 no. 1 article id 443
Korpilahti E., (1988) Photosynthetic production of Scots pine in the n.. Acta Forestalia Fennica vol. 0 no. 202 article id 7649
Hari P., Kellomäki S. et al. (1982) Dynamics of early development of tree stand Acta Forestalia Fennica vol. 0 no. 177 article id 7624