TY  - SER
AU  - Rong,Xiang
AU  - Weihan,Su
AU  - Chongrak Polprasert,
AU  - Samorn Muttamara,
ED  - Asian Development Bank, 
TI  - Estimation of methane and nitrous oxide emissions from rice fields in Thailand
T2  - Thesis
PY  - 1994///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Nitrous oxide
KW  - Methane
N1  - A thesis submitted in partial fulfilment of the requirement for the degree of Master of  Science, School of Environment, Resources & Development; Thesis (M.Sc.) - Asian Institute of Technology, 1994
N2  - Methane (CH4) and nitrous oxide (N20) are two important greenhouse gases. Nitrous  oxide is also responsible for depletion of the stratospheric ozone layer. Rice fields are a major  source of anthropogenic methane emission and possibly play a role in nitrous oxide emission due  to increasing use of nitrogen fertilizers around the world.  In this study, emissions of methane and nitrous oxide have been measured in a Thai rice  field . Clear patterns of diurnal emission variations of both gases have been observed, which were  found to generally follow the diurnal variation of the soil temperature. A detailed explanation is  given to explain the occurrence of a methane emission peak at night. The effects of urea  fertilization and field draining on emissions of the two gases are discussed.  Methane emission from Thai rice fields is estimated to be 3.32 Tg CH4 (2.49 Tg CH4-C)  each year, contributing about 3.4% to global methane budget due to rice cultivation. Finally,  mitigation options for methane emission from rice fields are put forward
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B15790
ER  -