Forest biomass dataset Alterra, Wageningen UR and European Forest Institute Geerten Hengeveld, Katja...
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Transcript of Forest biomass dataset Alterra, Wageningen UR and European Forest Institute Geerten Hengeveld, Katja...
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 above-ground 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
Stock per Area
1 degree grid
Growing Stock Growing
Stock Growing Stock
IPCC constants
Forest area
Growing Stock
Forest map
Country
Growing Stock Growing
Stock Aboveground
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/EuropeanForest/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.