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Forest biomass dataset
Alterra, Wageningen UR and European Forest Institute
Geerten Hengeveld, Katja Gunia, Markus Didion, Sergey Zudin, Sandra
Clerkx, Mart-Jan Schelhaas
Validation data for the CARBONES CCDAS
system
Forest pools and uncertainties (annual)
● Forest area (km2)
● Timber volume (m3)
● Aboveground biomass (kg)
● Carbon in aboveground biomass (kg)
● Belowground biomass (kg)
● Carbon in belowground biomass (kg)
● Total biomass (kg)
● Carbon in total biomass (kg)
● Changes in pools per 5 years
Data
FAO-FRA (Global Forest Resources Assessments)
MCPFE (Europe)
UNECE
● Per Country
● 1948-2011 (minimal 5 year interval)
● Forest Area
● Growing Stock
IPCC 2006 good practice guidance for biomass
conversion and expansion factors to estimate aboveground and below-ground biomass and carbon
Processing
Quality check: remove outliers
Interpolate in between data points
Extend values outside data range (flat)
Gridding, relative to current forest cover map
Assign uncertainties
Calculations
Country
Forest
area
Growing
Stock
Stock per
Area
IPCC
constants
1 degree grid
Forest
map
Growing
Growing
Stock
Growing
Stock
Stock
Growing
Growing
Aboveground
Stock
Stock
biomass/
carbon
Uncertainty assessment
Base uncertainty
● 3 classes (1,2,3 points)
● Trend over all records
● Coefficient of variation of detrended records
Methodology uncertainty
● 0.025 point per year (pre 1990)
Interpolation uncertainty
● 0.1 point per year
Technical specifications
1 degree grid
Global cover
Mollweide projection, Datum WGS84
NetCDF file
Data policy
Free to use
Proper referencing (Hengeveld et al., in prep)
Downloadable at
● the CARBONES portal
● or http://opendap.cgi-
systems.nl/thredds/catalog/projecten/EuropeanFore
st/carbones/catalog.html
Exemple: above ground forest biomass
(5 years mean) around 2005
Reference:
Hengeveld, G.M.H., K.
Gunia, M. Didion, S.
Zudin, A.P.P.M.
Clerkx, M.J.
Schelhaas. Gridded
maps as derived from
a compilation of
global forest biomass
estimates 1950-2010.
To be submitted to
Earth System Science
Data.