Diel and Seasonal Variations of Methane Flux from Bang Khen Paddy Field in Thailand

JIRCAS Journal
ISSN 13407686
NII recode ID (NCID) AA11030483
Full text

Diel and seasonal variations of CH4 flux from a paddy field were measured at Bang Khen Rice Experimental Station in Thailand. Diel measurement at the heading stage of rice plants showed that the daily average flux, amounting to 24.2 mg m-2hr-1, was equivalent to the flux measured in the late morning. The average values of seasonal variations of CH4 fluxes in 1992 major rice, 1993 second rice and 1994 second rice were 21.7, 4.3, and 6.7 mg m-2h-1, respectively*. The seasonal measurements in the second rice showed a relatively low CH4 emission, due to the very shallow water depth because of the limitation of the amount of irrigation water in the dry season. The results suggest that water supply is an important factor the evaluation of the global emission rates of CH4 from rice paddy fields.

Date of issued
Creator Kunihiko KATOH Prapai CHAIROJ Kazuyuki YAGI Haruo TSURUTA Katsuyuki MlNAMI Wisit CHOLITKUL
Subject global warming methane flux irrigation paddy soil
Publisher Japan International Research Center for Agricultural Sciences
Available Online
NII resource type vocabulary Journal Article
Volume 7
spage 69
epage 75
Rights Japan International Research Center for Agricultural Sciences
Language eng

Related Publication