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Canopy Chamber: a useful tool to monitor the CO2 exchange dynamics of shrubland

Gabriele Guidolotti (1-2)   , Giovanbattista De Dato (1-3), Dario Liberati (1), Paolo De Angelis (1-4)

iForest - Biogeosciences and Forestry, Volume 10, Issue 3, Pages 597-604 (2017)
doi: https://doi.org/10.3832/ifor2209-010
Published: May 15, 2017 - Copyright © 2017 SISEF

Technical Reports


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.

  Keywords


Canopy Chamber, CO2 fluxes, Cistus monspeliensis, Shrubland, Semiarid Ecosystems, Mediterranean Garrigue

Authors’ address

(1)
Gabriele Guidolotti
Giovanbattista De Dato
Dario Liberati
Paolo De Angelis
University of Tuscia, Department for Innovation in Biological, Agro-Food and Forest Systems (DIBAF), v. S. Camillo de Lellis snc, I-01100 Viterbo (Italy)
(2)
Gabriele Guidolotti
National Research Council of Italy (CNR), Istitute for Agro-Environment and Forest Biology (IBAF), v. Salaria km 29.300, I-00015 Monterotondo Scalo, RM (Italy)
(3)
Giovanbattista De Dato
Council for Agricultural Research and Economics (CREA), Forestry Research Centre (CREA-SEL), v.le Santa Margherita 80, I-52100 Arezzo (Italy)
(4)
Paolo De Angelis
Global Change Research Centre, Division of Impact Studies and Physiological Analyses, Belidla 4a, CZ-60300, Brno (Czech Republic)

Corresponding author

 
Gabriele Guidolotti
gabriele.guidolotti@ibaf.cnr.it

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

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