High nitrous oxide fluxes from rice indicate the need to manage water for both long- and short-term climate impacts.

ABSTRACT: Global rice cultivation is estimated to account for 2.5% of current anthropogenic warming because of emissions of methane (CH₄), a short-lived greenhouse gas. This estimate assumes a widespread prevalence of continuous flooding of most rice fields and hence does not include emissions of nitrous oxide (N₂O), a long-lived greenhouse gas. Based on the belief that minimizing CH₄ from rice cultivation is always climate beneficial, current mitigation policies promote increased use of intermittent flooding. However, results from five intermittently flooded rice farms across three agroecological regions in India indicate that N₂O emissions per hectare can be three times higher (33 kg-N₂O⋅ha^-1⋅season^-1) than the maximum pr

SUBMITTER: Kritee K 

PROVIDER: S-EPMC6166800 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature