6533b854fe1ef96bd12af3d6
RESEARCH PRODUCT
Nitrous oxide emission by agricultural soils: a review of spatial and temporal variability for mitigation
Catherine HénaultCatherine HénaultBruno MaryMagali RousselJoël LéonardA. Grosselsubject
N2O fluxesSoil biodiversity[SDV]Life Sciences [q-bio]Soil Scienceagricultural practicesSoil science010501 environmental sciencesengineering.material01 natural sciencesSoil pH[SDV.BV]Life Sciences [q-bio]/Vegetal BiologyWater content0105 earth and related environmental sciences2. Zero hunger04 agricultural and veterinary sciences15. Life on land6. Clean water13. Climate actionfertilizationgreenhouse gasGreenhouse gasSoil water[SDE]Environmental Sciences040103 agronomy & agricultureengineering0401 agriculture forestry and fisheriesEnvironmental scienceSpatial variabilityNitrificationFertilizersoil-atmosphere interfacedescription
CT3 ; EnjS4; International audience; This short review deals with soils as an important source of the greenhouse gas N2O. The production and consumption of N2O in soils mainly involve biotic processes: the anaerobic process of denitrification and the aerobic process of nitrification. The factors that significantly influence agricultural N2O emissions mainly concern the agricultural practices (N application rate, crop type, fertilizer type) and soil conditions (soil moisture, soil organic C content, soil pH and texture). Large variability of N2O fluxes is known to occur both at different spatial and temporal scales. Currently new techniques could help to improve the capture of the spatial variability. Continuous measurement systems with automatic chambers could also help to capture temporal variability and consequently to improve quantification of N2O emissions by soils. Some attempts for mitigating soil N2O emissions, either by modifying agricultural practices or by managing soil microbial functioning taking into account the origin of the soil N2O emission variability, are reviewed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-08-01 |