Measurements of Eddy Covariance CO2 Fluxes above a Forest Canopy in the Campine Region (Belgium)

Abstract

Fluxes of CO2, water vapour and sensible heat above a mixed coniferous/deciduous forest in the Campine region in Belgium have been measured employing the eddy covariance technique since early 1996. On a clear day, the CO2 flux shows a midday peak and a subsequent decline. During mid-July, the daily net ecosystem CO2 exchange (NEE) is high and negative (implying the ecosystem was actively accumulating carbon). After mid-October, NEE was positive, suggesting that the ecosystem was a source of CO2 to the atmosphere. Over a period of 100 days, the ecosystem accumulated about 13 mol m-2 of CO2.