Reducing methane emissions from rice fields
Synonyms: Decreasing methane released from rice paddies
Description: Emissions of methane from rice cultivation could be reduced dramatically by appropriate selection of species and reduction in rice paddy soil moisture.
Context: Total anthropogenic sources of methane are estimated at about 275 Mt per year. However, as with natural sources, these estimates have large uncertainties.
Implementation: Measurements of emissions from rice paddies show a strong dependence on season, rice type, soil conditioning and flooding control. Measurements of fluxes into the atmosphere from this source vary from a small sink to a source of more than 50 mg/sq m/day. Net global emissions from rice paddies are now estimate at 60 to 100 Mt/year, with China and India collectively contributing between 15 and 30% of this amount.
Subjects: Organic chemical compoundsCerealsEffluent
Type Classification: D: Detailed strategies