Canopy Chamber: a useful tool to monitor the CO2 exchange dynamics of shrubland
Autor: | P. De Angelis, Gabriele Guidolotti, Dario Liberati, G. de Dato |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2017 |
Předmět: |
0106 biological sciences
Canopy Transient state 010504 meteorology & atmospheric sciences Canopy Chamber Atmospheric sciences 01 natural sciences Wind speed Shrubland Flux (metallurgy) medicine lcsh:Forestry Co2 exchange 0105 earth and related environmental sciences Nature and Landscape Conservation geography geography.geographical_feature_category Ecology Forestry Seasonality medicine.disease Cistus monspeliensis Light intensity CO2 fluxes Mediterranean Garrigue Environmental science lcsh:SD1-669.5 Semiarid Ecosystems 010606 plant biology & botany |
Zdroj: | iForest-Biogeosciences and Forestry, Vol 10, Iss 1, Pp 597-604 (2017) IForest (Viterbo) (2017). doi:10.3832/ifor2209-010 info:cnr-pdr/source/autori:Gabriele Guidolotti Giovanbattista De Dato Dario Liberati Paolo De Angelis/titolo:Canopy Chamber: a useful tool to monitor the CO2 exchange dynamics of shrubland/doi:10.3832%2Fifor2209-010/rivista:IForest (Viterbo)/anno:2017/pagina_da:/pagina_a:/intervallo_pagine:/volume |
ISSN: | 1971-7458 |
Popis: | 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. |
Databáze: | OpenAIRE |
Externí odkaz: |