A system of the relaxed eddy accumulation method to evaluate CO2 flux over plant canopies

A system of the relaxed eddy accumulation method to evaluate CO2 flux over plant canopies

A sampling system based on the relaxed eddy accumulation method for continuous trace gas flux measurement was developed. The system consists of a sonic anemometer, a Teflon diaphragm pump, delay circuits, and a differential gas analyzer. Test measurements for the CO2 flux were carried out over a con...

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Veröffentlicht in:Journal of Agricultural Meteorology 1996/06/10, Vol.52(2), pp.135-139
Hauptverfasser: Hamotani, K. (Osaka Prefectural Univ., Sakai (Japan). Coll. of Agriculture), Uchida, Y, Monji, N, Miyata, A
Format: Artikel
Sprache:eng
Schlagworte:
ARROZALES
BOSQUE DE CONIFERAS
CARBON DIOXIDE
CO2 flux
COMMUNAUTE VEGETALE
COMUNIDADES VEGETALES
Coniferous forest
CONIFEROUS FORESTS
DIOXIDO DE CARBONO
DIOXYDE DE CARBONE
EVALUACION
EVALUATION
FORET RESINEUSE
INSTRUMENT DE MESURE
INSTRUMENTOS DE MEDICION
MASS TRANSFER
MEASUREMENT
MEASURING INSTRUMENTS
MEDICION
MESURE
METHODE
METHODS
METODOS
Paddy field
PLANT COMMUNITIES
PLANTAS
PLANTE
PLANTS
REA method
RICE FIELDS
RIZIERE
TRANSFERENCIA DE MASA
TRANSFERT DE MASSE
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Beschreibung
Zusammenfassung:A sampling system based on the relaxed eddy accumulation method for continuous trace gas flux measurement was developed. The system consists of a sonic anemometer, a Teflon diaphragm pump, delay circuits, and a differential gas analyzer. Test measurements for the CO2 flux were carried out over a coniferous forest and a paddy field. The empirical coefficient was determined by comparing with the fluxes measured by the eddy correlation method. This coefficient may be considered practically as a constant (0.57).
ISSN:0021-8588
1881-0136
DOI:10.2480/agrmet.52.135