A Large and Persistent Carbon Sink in the World's Forests
Tipo de material:
TextoSeries ; Science, 333(6045), p.988-993, 2011Trabajos contenidos: - Yude Pan
- Birdsey, R.A
- Fang, J
- Houghton, R
- Kauppi, P.E
- Kurz, W.A
- Phillips, O.L
- Phillips, O.L
- Lewis, S.L
- Canadell, J.G
- Ciais, P
- Jackson, R.B
- Pacala, S
- Mcguire, D
- Piao, S
- Rautiainen, A
- Sitch, S
- Hayes, D
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The terrestrial carbon (C)sink has been large in recent decades, but its size and location remain uncertain. Using forest inventory data and long-term ecosystem C studies, we estimated a total forest sink of 2.4 ± 0.4 Pg C yr-1 globally for 1990-2007. We also estimated a source of 1.3 ± 0.7 Pg C yr-1 from tropical land-use change, consisting of a gross tropical deforestation emission of 2.9 ± 0.5 Pg C yr-1 partially compensated by a C sink in tropical forest regrowth of 1.6 ± 0.5 Pg C yr-1. Together, the fluxes comprise a net global forest sink of 1.1 ± 0.8 Pg C yr-1, with tropical estimates having the largest uncertainties. This forest sink is equivalent in magnitude to the terrestrial sink deduced from fossil fuel emissions and constraints of ocean and atmospheric sinks.
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