RIVM report xxxxxx xxx

page 72 of 142 RIVM report 773301 001 / NRP report 410200 051
ú for rainfed rice we used the figure of 1.17 for Southeast Asia, which is the weighted average of
data for Thailand (1.09) and the Philippines (1.73); the same value was used for all other regions.
ú for deep water rice we used the same factors as for irrigated rice.
In this way we included in the methane emissions trend for 1970-1990 the influence of the changing
mix of cultivation types as well as of the of rice varieties used and the declining amounts of organic
inputs in rice cultivation. The resulting trend of this methodology is shown in Fig. 4.5.
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Rice ecosystem/country Emission factor 1990 MF * Emission factor 1970
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Global default 295 1.81 534 1)
1.50 442 2)
Thailand 480 1.81 869
China 340 1.50 510
Korea, Republic of (South) 330 1.81 597
Indonesia 310 1.83 567
Philippines 270 1.73 467
United States (USA) 250 1.81 452
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Global default 161 1.17 188
India 170 1.17 199
Thailand 150 1.17 175
Indonesia 80 1.17 94
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Global default 190 1.00 19
* Multiplication Factor: EF 1970 = MF * EF 1990 .
1) The three Asian regions and OECD and EIT regions.
2) Other LDC regions.
3) Deep water and tidal land.
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