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Correction published on 7 October 2020, see Climate 2020, 8(10), 113.
Open AccessArticle

Methane Emission Factors from Vietnamese Rice Production: Pooling Data of 36 Field Sites for Meta-Analysis

1
International Rice Research Institute, Los Banos 4031, Philippines
2
Institute of Agricultural Sciences in the Tropics, University of Hohenheim, 70593 Stuttgart, Germany
3
Cuu Long Rice Research Institute, Can Tho 94000, Vietnam
4
Karlsruhe Institute of Technology, 82467 Garmisch-Partenkirchen, Germany
5
Institute for Agricultural Environment, Hanoi 10000, Vietnam
*
Author to whom correspondence should be addressed.
Climate 2020, 8(6), 74; https://doi.org/10.3390/cli8060074
Received: 14 April 2020 / Revised: 27 May 2020 / Accepted: 4 June 2020 / Published: 10 June 2020
(This article belongs to the Section Climate and Environment)
Rice production is a significant source of greenhouse gas (GHG) emissions in the national budget of many Asian countries, but the extent of emissions varies strongly across agro-environmental zones. It is important to understand these differences in order to improve the national GHG inventory and effectively target mitigation options. This study presents a meta-analysis of CH4 database emission factors (EFs) from 36 field sites across the rice growing areas of Vietnam and covering 73 cropping seasons. The EFs were developed from field measurements using the closed chamber technique. The analysis for calculating baseline EFs in North, Central and South Vietnam in line with the Intergovernmental Panel on Climate Change (IPCC) Tier 2 methodology was specified for the three cropping seasons being early-(E), mid-(M) and late-year (L) seasons. Calculated average CH4 EFs are given in kg ha−1 d−1 and reflect the distinct seasons in North (E: 2.21; L: 3.89), Central (E: 2.84; M+L: 3.13) and South Vietnam (E: 1.72; M: 2.80; L: 3.58). Derived from the available data of the edapho-hydrological zones of the Mekong River Delta, season-based EFs are more useful than zone-based EFs. In totality, these average EFs indicate an enormous variability of GHG emissions in Vietnamese rice production and represent much higher values than the IPCC default. Seasonal EFs from Vietnam exceeded IPCC defaults given for Southeast Asia corresponding to 160% (E), 240% (M) and 290% (L) of the medium value, respectively. View Full-Text
Keywords: rice; greenhouse gas; methane; nitrous oxide; emission factor; IPCC Tier 2; Vietnam; Mekong River Delta rice; greenhouse gas; methane; nitrous oxide; emission factor; IPCC Tier 2; Vietnam; Mekong River Delta
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MDPI and ACS Style

Vo, T.B.T.; Wassmann, R.; Mai, V.T.; Vu, D.Q.; Bui, T.P.L.; Vu, T.H.; Dinh, Q.H.; Yen, B.T.; Asch, F.; Sander, B.O. Methane Emission Factors from Vietnamese Rice Production: Pooling Data of 36 Field Sites for Meta-Analysis. Climate 2020, 8, 74. https://doi.org/10.3390/cli8060074

AMA Style

Vo TBT, Wassmann R, Mai VT, Vu DQ, Bui TPL, Vu TH, Dinh QH, Yen BT, Asch F, Sander BO. Methane Emission Factors from Vietnamese Rice Production: Pooling Data of 36 Field Sites for Meta-Analysis. Climate. 2020; 8(6):74. https://doi.org/10.3390/cli8060074

Chicago/Turabian Style

Vo, Thi B.T.; Wassmann, Reiner; Mai, Van T.; Vu, Duong Q.; Bui, Thi P.L.; Vu, Thi H.; Dinh, Quang H.; Yen, Bui T.; Asch, Folkard; Sander, Bjoern O. 2020. "Methane Emission Factors from Vietnamese Rice Production: Pooling Data of 36 Field Sites for Meta-Analysis" Climate 8, no. 6: 74. https://doi.org/10.3390/cli8060074

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