forestry and forest products project level carbon accounting toolkit csiro forestry and forest...
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FORESTRY AND FOREST PRODUCTS
Project Level Project Level
Carbon Accounting Carbon Accounting ToolkitToolkit
CSIRO Forestry and Forest Products
Department of Forestry, Australian National University
Australian Greenhouse Office
FORESTRY AND FOREST PRODUCTS
Carbon Futures Trading
Sink Creation
Sink Assessment
(current, forecasted)
Pool Manager
Carbon Trader
Toolkit for investors, managers
and ‘auditors’
FORESTRY AND FOREST PRODUCTS
Carbon Accounting Toolkit
Provides support to estimation of carbon stocks and their temporal change.
Coverage: • Methods for measuring key model inputs• Factors (defaults) for converting inventory data to C
stocks for a range of important systems• Forecasts of stock change based on current forest
condition• Prediction of temporal pattern of ecosystem C
change for ‘new’ environments
FORESTRY AND FOREST PRODUCTS
Carbon Accounting Toolkit
Outputs: • Initially a set of case studies for important
plantation systems – specifying temporal change in C pools and associated uncertainties.
• Eventually an extensive set of net C accumulation curves for a range of species, environments and silvicultures based on calibrated and validated models.
FORESTRY AND FOREST PRODUCTS
Project Level Carbon Accounting Toolkit
Defaults• scalers for use in specific systems• examples
– Allometric equations (sps, site)– Harvest index (age, utilization)– Expansion factors (age, sps)– Wood densities (sps, age)– Root:shoot ratios (age, site)
• justify use of alternative values
Effect of tree size on above-ground biomass of Pinus radiata
1
10
100
1000
10000
1 10 100
DBH, cm
Bio
mas
s, k
g
5 10 20 30 50 8010
20
50
100
200
500
1000
Basal area (m2 ha-1)
To
tal b
iom
as
s (
t h
a-1)
Eucalypts
Pinus radiata
Relationship between stand basal area and above-ground biomass
0 10 20 30 400
1
2
3
4
Stand height (m)
Ex
pa
ns
ion
fa
cto
rRatio of total biomass: stemwood biomass in stands of Pinus radiata
FORESTRY AND FOREST PRODUCTS
Estimating harvested biomass from roundwood removals
Expansion factors for native eucalypt forests
With pulp No pulp
Moist high quality forest- patch harvest 1.7 2.9- Single tree selection 1.2 1.8
Dry low quality forest- patch harvest 2.0 5.0- Single tree selection 1.3 2.2
FORESTRY AND FOREST PRODUCTS
Root:Shoot Ratios in Australian Forests
Forest Type n Ratio
Softwood plantation 7 0.29
Hardwood plantation 49 0.22
Eucalypt woodland 16 0.41
Variation in wood density Some material from Ilic et al. report
0
200
400
600
800
1000
1200
Auracaria bidwilli Pinus radiata Pinus radiata Eucalyptusglobulus
Eucalyptusglobulus
Acacia aneura
Forecasting growth
B
B
A
A
2008 20122000
Cumulative carbon (t/ha)
Model enhancement
3-PG
Roth-C
Gendec
growth
litter decomp
soil C
CAMFor
wood products
GRC-3
Modelling change in forest carbon
-50
0
50
100
150
200
0 5 10 15 20 25 30 35 40
Years of afforestation
Net
C a
ccu
m.
(t C
ha-1
)Tree biomassDebrisSoilTotal ecosystem
FORESTRY AND FOREST PRODUCTS
Project Level Carbon Accounting Toolkit
Error and Uncertainty Analysis
• Estimate variability of model inputs (e.g. spatial measures of stand condition).
• Use of @ risk to estimate uncertainty of model outputs.
• Express as probability of stand carbon density.
FORESTRY AND FOREST PRODUCTS
Project Level Carbon Accounting Toolkit
Probability of Stand Carbon Density
Probability
(a) (b)
Stand C (t/ha)
(b)
FORESTRY AND FOREST PRODUCTS
Project Level Carbon Accounting Toolkit
Verification
• Field measures
• Model outputs
• Error and uncertainty analysis
• Independent audit
FORESTRY AND FOREST PRODUCTS
Project Level Carbon Accounting Toolkit
Status• Inventory methods documented• Model calibration and testing underway• Defaults summarized• Case studies underway for pine and eucalypt
plantations and environmental plantings – including uncertainty analysis
• Initial product in 3-4 months