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The European carbon balance: part 3: Forests. (Articolo in rivista)

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Luyssaert S., Ciais P., Piao S.L., Schulze E.-D., Jung M., Zaehle S., Schelhaas M.J., Reichstein M. Churkina G., Loustau D., Matteucci G., Magnani F., Nabuurs G.J., Verbeeck H., Sulkava M., Van der Werf G.R, Janssens I.A. (2010)
The European carbon balance: part 3: Forests.
in Global change biology (Print); WILEY-BLACKWELL PUBLISHING, INC, MALDEN (Stati Uniti d'America)
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Luyssaert S., Ciais P., Piao S.L., Schulze E.-D., Jung M., Zaehle S., Schelhaas M.J., Reichstein M. Churkina G., Loustau D., Matteucci G., Magnani F., Nabuurs G.J., Verbeeck H., Sulkava M., Van der Werf G.R, Janssens I.A. (literal)

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[Luyssaert, S.; Janssens, I. A.] Univ Antwerp, Dept Biol, B-2610 Antwerp, Belgium [Ciais, P.; Piao, S. L.; Zaehle, S.; Verbeeck, H.] CEA, CNRS, UVSQ, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France [Schulze, E. -D.; Jung, M.; Reichstein, M.; Churkina, G.; Beer, C.] Max Planck Inst Biogeochem, D-07745 Jena, Germany [Schelhaas, M. J.] Wageningen UR, Ctr Ecosyst Studies, NL-6700 AA Wageningen, Netherlands [Papale, D.] Univ Tuscia, DISAFRI, Dept Forest Environm Sci & Resource, Lab Forest Ecol, I-01100 Viterbo, Italy [Abril, G.] Univ Bordeaux 1, CNRS, UMR 5805, Dept Geol & Oceanog,EPOC, F-33405 Talence, France [Grace, J.] Univ Edinburgh, Sch Geosci, Inst Atmospher & Environm Sci, Edinburgh EH9 3JN, Midlothian, Scotland [Loustau, D.] EPHYSE, UR1263, F-33883 Villenave Dornon, France [Matteucci, G.] CNR ISAFOM, I-87036 Arcavacata Di Rende, Italy [Magnani, F.] Univ Bologna, Dept Fruit Tree & Woody Plant Sci, I-40127 Bologna, Italy [Sulkava, M.] Helsinki Univ Technol, Dept Informat & Comp Sci, Helsinki 02015, Tkk, Finland [van der Werf, G. R.] Vrije Univ Amsterdam, Fac Earth & Life Sci, Amsterdam, Netherlands [Nabuurs, G. J.] European Forest Inst, Joensuu 80100, Finland (literal)

Titolo

Abstract

We present a new synthesis, based on a suite of complementary approaches, of the primary production and carbon sink in forests of the 25 member states of the European Union (EU-25) during 1990-2005. Upscaled terrestrial observations and model-based approaches agree within 25% on the mean net primary production (NPP) of forests, i.e. 520 +/- 75 g C m-2 yr-1 over a forest area of 1.32 x 106 km2 to 1.55 x 106 km2 (EU-25). New estimates of the mean long-term carbon forest sink (net biome production, NBP) of EU-25 forests amounts 75 +/- 20 g C m-2 yr-1. The ratio of NBP to NPP is 0.15 +/- 0.05. Estimates of the fate of the carbon inputs via NPP in wood harvests, forest fires, losses to lakes and rivers and heterotrophic respiration remain uncertain, which explains the considerable uncertainty of NBP. Inventory-based assessments and assumptions suggest that 29 +/- 15% of the NBP (i.e., 22 g C m-2 yr-1) is sequestered in the forest soil, but large uncertainty remains concerning the drivers and future of the soil organic carbon. The remaining 71 +/- 15% of the NBP (i.e., 53 g C m-2 yr-1) is realized as woody biomass increments. In the EU-25, the relatively large forest NBP is thought to be the result of a sustained difference between NPP, which increased during the past decades, and carbon losses primarily by harvest and heterotrophic respiration, which increased less over the same period. (literal)

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