The global land-use change emission is approximately equal to the tropical land-use change emission, stocks for tropical intact forests, so the C sink for because the net carbon balance of land-use changes in temperate and boreal regions is neutral (24, 38). [...] of C sinks in the global established forests (that are outside the areas of tropical land-use changes) from this study. [...] Tropical land-use change emissions are a net global land-use emissions (Tables 1 and 3), be- offset by large C uptake in tropical regrowth for- balance of C fluxes consisting of gross tropical de- cause effects of land-use changes on C were ests recovering from the deforestation, logging, forestation emissions partially compensated by C roughly balanced in extratropics (7, 24, 25). [...] They declined Tropical deforestation produced significant Tropical regrowth forests (557 Mha) repre- from 1.5 T 0.7 PgC year–1 in the 1990s to 1.1 T 0.7 gross C emissions of 3.0 T 0.5 and 2.8 T 0.5 Pg sent ~30% of the total tropical forest area. [...] The Pg C year–1 for 2000 to 2007 (Table 1) due to C year–1, respectively, for 1990 to 1999 and 2000 C uptake by tropical regrowth forests is usually reduced rates of deforestation and increased for- to 2007, ~40%of the global fossil fuel emissions.
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- United States of America
