Figure 2
From: Disentangling gross N2O production and consumption in soil
Conceptual diagram of gross N2O fluxes.
Gross N2O emission and gross N2O uptake, measured by 15N2O pool dilution (15N2OPD), which largely includes gas exchange in interconnected air-filled pores in the soil; gross N2O uptake = gross N2O emission – net N2O flux. Gross N2O production and gross N2O consumption, measured by gas-flow soil core (GFSC), which encompasses the soil air-filled pores as well as anaerobic microsites (e.g. soil micro spots saturated with water, isolated pores filled with or enclosed by water, and water-entrapped N2O); gross N2O consumption = N2 emission, and gross N2O production = gross N2O consumption + net N2O flux.
