Measurement by static chamber of n2o emission from agricultural soils

Abstract

The aim of this work is to estimate of nitrous oxide (N2O) emission losses from agricultural soils. The emission of nitrous oxide was evaluated on a period of 10 months at the International Centre for Research in Organic Food Systems, ICROFS, Denmark. In order to evaluate N2O gas flux, the static chamber measuring technique is used. The samples collected are then analysed using a Gas Chromatograph (GC) with electron capture detector for N2O. The results indicate a difference, in nitrous oxide emission, between the cold and the hot season. The values from the ecological plot during the cold season were located between 0.04 and 2.83 g N2O -N /(ha*day), and during the hot season, the values were higher, located between 8.81 – 18.05 g N2O -N /(ha*day).