Greenhouse Gas Emissions and Soil Carbon Stocks in the Agricultural Phase of Sugarcane-derived Ethanol Production in Brazil

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Presentation of Carlos C. Cerri for the "2nd Workshop on the Impact of New Technologies on the Sustainability of the Sugarcane/Bioethanol Production Cycle"

Apresentação de Carlos C. Cerri realizada no "2nd Workshop on the Impact of New Technologies on the Sustainability of the Sugarcane/Bioethanol Production Cycle"

Date / Data : Novr 11th - 12th 2009/
11 e 12 de novembro de 2009
Place / Local: CTBE, Campinas, Brazil
Event Website / Website do evento: http://www.bioetanol.org.br/workshop5

Published in: Technology
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Greenhouse Gas Emissions and Soil Carbon Stocks in the Agricultural Phase of Sugarcane-derived Ethanol Production in Brazil

  1. 1. Greenhouse gas emissions and soil carbon stocks in the agricultural phase ofsugarcane-derived ethanol production in Brazil Cerri (2009)
  2. 2. NON-FOSSIL EMISSIONS FOSSIL EMISSIONS NON-FOSSIL EMISSIONS FOSSIL EMISSIONS ETHANOL SURPLUS ELECTRICITYSOIL C FILTER CAKE VINASSE Cerri (2009)
  3. 3. Soil carbon stocks 100 cm100 cm 10 cm Stock = C content X bd X layer %C m d= 10 cm V kg C m-2 or Mg C ha-1 Cerri (2009)
  4. 4. Central trench 0-0.10m 1.5 mCerri (2009) Cerri (2009)
  5. 5. Central trench 0.40-0.50m 1.5 m Cerri (2009)
  6. 6. Central trench 1.5 m 0.90-1.00 mCerri (2009) Cerri (2009)
  7. 7. Small trenches 0-0.10m 0.10-0.20m 0.20-0.30m Cerri (2009)
  8. 8. Soil carbon laboratory analyses Cerri (2009)
  9. 9. Soil carbon laboratory analysesSample combustion (1400 oC) in closed furnace (pure O2) - C Quantification (%) → infrared Cerri (2009)
  10. 10. Field sampling of GHG T1 Incubation chamber T 2 T 3......T n Hermetic seringes Manual static chambers Cerri (2009)
  11. 11. Field sampling of GHG GHG emissions from N fertilizer Cerri (2009)
  12. 12. Field sampling of GHG Automated chambers Cerri (2009)
  13. 13. Field sampling of GHGVinasse – storage and trasportation Cerri (2009)
  14. 14. Análises na própria usina Cromatógrafo portátil Cerri (2009)
  15. 15. GHG laboratory analysesDetectors:Electron Capture Detector → CO2 e N2OFlame Ionization Detector → CH4 T0 T5 T10 T20 Cerri (2009)
  16. 16. Manual harvest – with burninghttp://www.sugarcaneart.com/gallery/sugarcane.htm Cerri (2009)
  17. 17. Manual harvest – with burningSugarcane quality Gas emissions Charcoal Biomass losses Cerri (2009)
  18. 18. Mechanized unburned sugarcane harvestCerri (2009) Cerri (2009)
  19. 19. Cerri (2009)
  20. 20. Native vegetation Burned sugarcane Soil carbon (kg.m-2) CARBON REMAINING FROM FOREST years (2009) Cerri Change in management
  21. 21. Native vegetation Burned sugarcane Cana-de-açúcar colhida sem queima Soil carbon CARBON REMAINING FROM FOREST Change in management Cerri (2009)
  22. 22. Experiment in Pradópolis, São Paulo, Brazil burned not burned In 8 years = 12.4 t C ha-1 (0-30 cm) 1.6 t C ha-1 year-1 (0-30 cm)Cerri (2009) Cerri (2009)
  23. 23. Soil carbon and LUCDegraded pastures GreencaneSoil carbon Time Cerri (2009)
  24. 24.  Limited capacity to store carbon  Carbon can be lost with disturbance  Dependent on soil and climate variablesCerri (2009) Cerri (2009)

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