Cerri (2009) Greenhouse gas emissions and soil carbon stocks in the agricultural phase of sugarcane-derived ethanol production in Brazil
Jun 05, 2015
Cerri (2009)
Greenhouse gas emissions and soil carbon stocks in the agricultural phase of
sugarcane-derived ethanol production in Brazil
Cerri (2009)
SOIL C
ETHANOL
FOSSIL EMISSIONS
FOSSIL EMISSIONS NON-FOSSIL EMISSIONS
NON-FOSSIL EMISSIONS
SURPLUS ELECTRICITY
VINASSE
FILTER CAKE
Cerri (2009)
Soil carbon stocks
100 cm
10 cm
100 cm
Stock = C content X bd X layer
% C d = m
V 10 cm
kg C m-2 or Mg C ha-1
Cerri (2009) Cerri (2009)
0-0.10m
1.5 m
Central trench
Cerri (2009)
0.40-0.50m
Central trench
1.5 m
Cerri (2009) Cerri (2009)
0.90-1.00 m
1.5 m
Central trench
Cerri (2009)
0-0.10m
0.10-0.20m
0.20-0.30m
Small trenches
Cerri (2009)
Soil carbon laboratory analyses
Cerri (2009)
Sample combustion (1400 oC) in closed furnace (pure O2) - C Quantification (%) → infrared
Soil carbon laboratory analyses
Cerri (2009)
Field sampling of GHG
T 2 T n T 3...... Hermetic seringes
T 1
Incubation chamber
Manual static chambers
Cerri (2009)
GHG emissions from N fertilizer
Field sampling of GHG
Cerri (2009)
Automated chambers
Field sampling of GHG
Cerri (2009) Vinasse – storage and trasportation
Field sampling of GHG
Cerri (2009)
Análises na própria usina
Cromatógrafo portátil
Cerri (2009)
Detectors: Electron Capture Detector → CO2 e N2O Flame Ionization Detector → CH4
T0 T5 T10 T20
GHG laboratory analyses
Cerri (2009)
Manual harvest – with burning
http://www.sugarcaneart.com/gallery/sugarcane.htm
Cerri (2009) Charcoal
Sugarcane quality
Gas emissions Biomass losses
Manual harvest – with burning
Cerri (2009) Cerri (2009)
Mechanized unburned sugarcane harvest
Cerri (2009)
Cerri (2009) years
Soil c
arbo
n (k
g.m
-2)
Native vegetation
Burned sugarcane
Change in management
CARBON REMAINING FROM FOREST
Cerri (2009)
Soil c
arbo
n Native vegetation Burned sugarcane
CARBON REMAINING FROM FOREST
Change in management
Cana-de-açúcar colhida sem queima
Cerri (2009) Cerri (2009)
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)
Experiment in Pradópolis, São Paulo, Brazil
Cerri (2009)
Soil c
arbo
n Degraded pastures Greencane
Soil carbon and LUC
Time
Cerri (2009) Cerri (2009)
Limited capacity to store carbon Carbon can be lost with disturbance Dependent on soil and climate variables