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Giuliana Zanchi , Hans Verkerk, Marcus Lindner

Giuliana Zanchi , Hans Verkerk, Marcus Lindner. Carbon budget of European Forests: an inventory based method. Poznan, Poland 8 -12 October 2007. Outline. Methods Model results - regional (2000-2005) - upscaling to total forest - contribution by different components - long term

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Giuliana Zanchi , Hans Verkerk, Marcus Lindner

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  1. Giuliana Zanchi , Hans Verkerk, Marcus Lindner Carbon budget of European Forests: an inventory based method Poznan, Poland 8 -12 October 2007

  2. Outline Methods Model results - regional (2000-2005) - upscaling to total forest - contribution by different components - long term - flux ratios 3. Discussion 4. Conclusions

  3. 1. Methods Forest C-budget  Inventory based approach EFISCEN model CarboInvent Yasso model

  4. Input from other models Forest types Growth changes due to environm. change Forest managem. Wood demand Afforest./ Deforest. Volume scenario Age Projections of: • Stem/wood volume • Net annual increment • Age class distribution • Removals • Forest area (AWS) • Natural mortality Felling residues Soil module: C stocks and Rh Whole tree carbon stocks Litterfall EFISCEN Data from national forest inventories matrix Matrix generator EFISCEN matrix simulator

  5. 2. MODEL RESULTS

  6. tC ha-1 Forest C stock (2005) Tot: 147.9 tC ha-1 Trees: 67.1 tC ha-1 Soil: 80.9 tC ha-1

  7. Forest NBP (2000-2005) C stock change in trees and soil Forest NEP (2000-2005) C stock change in trees and soil +removals

  8. C stock change in trees and soil + removals + Rh

  9. Upscaling EFI forest map Upscaling to total forest area European Forest Institute, 2002

  10. Total forest area • Forest: 150 Mha • NPP: 428 TgC yr-1 • NEP: 128.5 TgC yr-1 • NBP: 69.5 TgC yr-1

  11. Forest area change • Additional annual increase: • Forest: 0.65 Mha yr-1 • NPP: 1.85 TgC yr-1 • NEP: 0.56 TgC yr-1 • NBP: 0.30 TgC yr-1

  12. Different component contribution to the NPP

  13. Different component contribution to the NEP

  14. Ratio: NEP/NPP

  15. Ratio: NBP/NPP

  16. Long term period Forest C stock change (NBP) 2000 -2060

  17. Discussion: gaps • Natural mortality: • - Management practices • - Forest available/not available for wood supply • - Variable: 0.5 – 7% of NPP (higher in Nordic countries) • Disturbances: ? • Soil: • C stock change as a differnce between litter inputs and respiration (e.g. leakage not accounted) • Forest area changes: • Natural expansion, afforestation

  18. Conclusions • NPP: 285 gCm-2yr-1 (428 TgC yr-1) • NEP: 85.5 gCm-2yr-1 (128.5 TgC yr-1) • Higher for central Europe and broadleaves • Rh is 70% of NPP; fellings 50% of NEP • (Liski et al. 2006) • Upscaling: forest not available for wood supply might have different NPP, NEP, NBP • Missing some flux components (e.g. fires) • Next step: comparison

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