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Forest biomass dataset

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)

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Forest biomass dataset

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  1. Forest biomass dataset Alterra, Wageningen UR and European Forest Institute Geerten Hengeveld, KatjaGunia, Markus Didion, Sergey Zudin, Sandra Clerkx, Mart-Jan Schelhaas

  2. 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

  3. 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

  4. 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

  5. Calculations Country Forest area IPCC constants Stock per Area Growing Stock 1 degree grid Growing Stock Growing Stock Growing Stock Growing Stock Forest map Growing Stock Aboveground biomass/ carbon

  6. 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

  7. Technical specifications • 1 degree grid • Global cover • Mollweideprojection, Datum WGS84 • NetCDF file

  8. 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

  9. Exemple: above ground forest biomass(5 years mean) around 2005

  10. 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.

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