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Conference papers

Mesure spatialisée des émissions de N2O par les sols agricoles

Abstract : The complex interactions between control factors as well as soil heterogeneity result in large spatial variations in soil N2O flux. The objective of this work is to study the spatial variability at large scale for defining better methodologies of N2O measurements. 48 flux measurements were thus made on a 3.2*2.4 m surface in an agricultural plot, sampling 77% of the surface thanks to the coupling of a QCL Infrared spectrometer and a mobile chamber. This method enabled to obtain a sampling on a short time step of flux spatial variations. Observations suggest that the spatial variability on this surface was linked to the availability in carbon in the soil.
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Submitted on : Wednesday, June 3, 2020 - 2:11:30 PM
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  • HAL Id : hal-02748813, version 1
  • PRODINRA : 50633



Agnès Grossel, Bernard Nicoullaud, Adeline Besnault, Christophe Guimbaud, C Robert, et al.. Mesure spatialisée des émissions de N2O par les sols agricoles. 36. Journées scientifiques du GFHN;8. Colloque GEOFCAN;Milieux poreux et géophysique, Nov 2011, Orléans, France. ⟨hal-02748813⟩



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