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Greenhouse Gas Mitigation in Irrigated Rice Paddies in Southeast Asia: Field Demonstration and Consolidation of Procedures (MIRSA-2)

        Paddy fields are recognized as an important source of atmospheric greenhouse gases (GHGs) mainly through the emissions of methane (CH4) which is specific to flooded ecosystems. Therefore, it is very important for contributing to mitigate global warming to reduce CH4 emissions from paddy fields by controlling the emissions by agronomic practices.
        A 5-year research project entitled “Greenhouse Gas Mitigation in Irrigated Rice Paddies in Southeast Asia: Field Demonstration and Consolidation of Procedures (MIRSA-2)” was launched in 2013 thanks to  the funding support from the Ministry of Agriculture, Forestry and Fisheries of Japan. Following six research institutions are initial participants in the MIRSA-2 project: 

-  National Institute for Agro-Environmental Sciences (NIAES), Tsukuba, Japan 
-  International Rice Research Institute (IRRI), Los Baños, Philippines 
-  Hue University of Agriculture and Forestry (HUAF), Hue, Vietnam 
-  Philippine Rice Research Institute (PhilRice), Muñoz, Philippines 
-  Joint Graduate School of Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, Bangkok, Thailand 
-  Indonesian Agricultural Environment Research Institute (IAERI), Pati, Indonesia


         The research project aims at developing an improved rice-cropping system with Alternate Wetting and Drying (AWD) in Southeast Asia, which is a water management with the dual benefits of saving water and mitigating emissions of greenhouse gas (GHG).

         The ultimate objective of this research project is to create an implementation guideline for “Measurement, Reporting, and Verification” that provides guidance on techniques to reduce GHG emissions from irrigated paddy fields and set up an information infrastructure to share the findings of participating members.

        The outcomes of this project will reduce the total emissions of methane (CH4) and nitrous oxide (N2O) by 30% on the basis of the 100-year Global Warming Potential in comparison with the conventional water managements. Therefore, this project consists of the following four parts: (1) each member country creates, based on field experiments, implementation standards for AWD to achieve the emission reduction target (hereinafter referred to as the improved system); (2) comprehensive analysis of the findings to establish a generalized scientific knowledge about the influence of the improved system on GHG emission reduction; (3) together with the generalized scientific knowledge, an information infrastructure is set up to achieve the emission reduction target at a multiple scale (from a point scale to a national scale); (4) creation of implementation guidelines for “Measurement, Reporting, and Verification” that provides guidance on techniques to reduce GHG emissions from irrigated paddy fields, and to ensure accuracy and transparency.


         As a project to assess water management options was agreed to at the Paddy Rice Research Group of Global Research Alliance on Agricultural Greenhouse Gases (GRA), the MIRSA-2 project implements the Work Plan of the Group.


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International Research Division,
Agriculture, Forestry and Fisheries Research Council Secretariat, 
Ministry of Agriculture, Forestry and Fisheries (MAFF)
1-2-1 Kasumigaseki, Chiyoda-ku, Tokyo 100-8950, Japan
Tel:+81-3-3502-7467
Fax:+81-3-5511-8788

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