Abstract
Appropriate chamber deployment time for separate quantification of CH<SUB>4</SUB> emissions via plant and ebullition from rice paddies using a modified closed-chamber method
Highlights
Rice paddies are an important source of atmospheric CH4, a highly potent greenhouse gas (Ciais et al, 2013)
The separate quantifications revealed that plant-mediated emission and ebullition had different sensitivities to temperature and rice growth stages, clearly demonstrating the need to determine CH4 fluxes via each emission pathway for accurate observation and modeling (Kajiura and Tokida, 2021)
We proposed an appropriate chamber deployment time as a function of bubbling frequency
Summary
Rice paddies are an important source of atmospheric CH4, a highly potent greenhouse gas (Ciais et al, 2013). The separate quantifications revealed that plant-mediated emission and ebullition had different sensitivities to temperature and rice growth stages, clearly demonstrating the need to determine CH4 fluxes via each emission pathway for accurate observation and modeling (Kajiura and Tokida, 2021). We assessed the minimum chamber deployment time necessary for accurate flux estimation by analyzing 3255 datasets of chamber [CH4] obtained from rice paddies during 2 years of field surveys
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