Workshop Trade-off Analysis - CGIAR_19 Feb 2013_CRP 3.3_Bjoern Ole Sander

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Workshop Trade-off Analysis - CGIAR_19 Feb 2013_CRP 3.3_Bjoern Ole Sander

  1. 1. Trade-offs in Climate Change Research at IRRI Dr. Björn Ole SanderInternational Rice Research Institute (funded by CCAFS Theme 3) Wageningen 19/2/13
  2. 2. DANIDA project LUCCi Improving Rice Tolerance of Submergence Land Use and Climate Change and Salinity in Vietnamese Deltas interactions in Central Vietnam SAMPLES Measuring Mitigation Potential in Smallholder Systems at Whole-farm and Landscape Scales ICON Introducing non-flooded crops into rice-dominated landscapes: Impact on Carbon, Nitrogen, Water MIRSA GHG Mitigation in Irrigated Rice Systems: Guidelines for Measurem., Reporting, Verification CLUES Climate Change affecting Land Use in the Mekong Delta: Adaptation of Rice-based Cropping Systems HydroRiceTech BAYER Technologies for climate change mitigation and Collaboration on new Methodologyadaptation in rice based cropping systems in E. India for Clean Development Mechanism
  3. 3. Alternate-Wetting- and-Drying (AWD)• Safe AWD = Irrigate when water depth ~ -15 cm• Keep flooded until 15 DAT (weeds) and at flowering
  4. 4. GHG Emission Reduction in Farmers’ Fields (Philippines) CH4 emissions Tarlac 16 CF 14 AWD 12mg CH4 / h*m2 10 “Global Warming Potential” 8 of Tarlac Rice Fields 6 GHG accounting 4 6 N2O 2 5 CH4 CO2eq (t / ha*season) 0 10 20 30 40 50 60 70 80 90 Days after Transplanting 4 3 Seasonal CH4 emissions in Farmers’ Rice Fields 2012 2 1 0 CF AWD Sander et al., manuscript in preparation
  5. 5. CH4 reduction – N2O increase Jiao et al., 2006
  6. 6. Angat River Irrigation System / Bulacan province Angat Dam Bustos Dam Angat RiverNMCSMC Service Area : 26,791 ha. 23,708 Farmer Beneficiaries in 20 municipalities of 2 provinces
  7. 7. New version of CDM methodology for CH4 reduction in rice productionDefault values for shifting fromcontinuous flooding to intermitted flooding:“For regions/countries where double croppingis practiced:(i) Use reduction of 1.50 (kgCH4/ha/day) for project activities that shift to intermittent flooding (single aeration);(ii) Use reduction of 1.80 (kgCH4/ha/day) for project activities that shift to intermittent flooding (multiple aeration);”
  8. 8. Summary # samplings – accurate seasonal GHG estimation CH 4 reduction – N 2 O increase AWD: less snails – more rats Water to Manila – water to farmers in Bulacan Scientific accuracy – bringing message across (Scientific accuracy – having impact?)
  9. 9. Summary # samplings – accurate seasonal GHG estimation CH 4 reduction – N 2 O increase AWD: less snails – more rats Water to Manila – water to farmers in Bulacan Scientific accuracy – bringing message across (Scientific accuracy – having impact?)

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