A transient state canopy-chamber was developed to monitor CO2 exchange of shrubland ecosystems. The chamber covered 0.64 m2 and it was modular with a variable height. Several tests were carried out to check the potential errors in the flux estimates due to leakages and the environment modifications during the measurements inside the chamber. The laboratory leakages test showed an error below 1% of the flux; the temperature increases inside the chamber were below 1.3 °C at different light intensity and small pressure changes. The radial blowers inside the chamber created different wind speed at different chamber height, with faster speed at the top of the chamber and the minimum wind speed that was recorded at soil level, preventing detectable effects on soil CO2 emission rates. Moreover, the chamber was tested for two years in a semi-arid Mediterranean garrigue, identifying a strong seasonality of CO2 fluxes with the highest rates during spring and lowest rates recorded during the hot dry non-vegetative summer.
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Citation
Guidolotti G, De Dato G, Liberati D, De Angelis P (2017). Canopy Chamber: a useful tool to monitor the CO2 exchange dynamics of shrubland. iForest 10: 597-604. - doi: 10.3832/ifor2209-010
Academic Editor
Tamir Klein
Paper history
Received: Aug 25, 2016
Accepted: Mar 26, 2017
First online: May 15, 2017
Publication Date: Jun 30, 2017
Publication Time: 1.67 months
© SISEF - The Italian Society of Silviculture and Forest Ecology 2017
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This article is distributed under the terms of the Creative Commons Attribution-Non Commercial 4.0 International (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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