30 Aug 2012:
Falls Sharply in Past Eight Years
Deforestation in the Brazilian Amazon fell by 77 percent from 2004 to 2011, but carbon emissions did not drop as steeply
because of complex processes revealed during on-the-ground studies, scientists say. While analysis of satellite images showed the three-quarters drop in deforestation, researchers said that several factors — including the slow decay of roots and the later burning of wood biomass — meant that carbon emissions from deforestation fell by 57 percent during the same period, according to a study published in the journal Global Change Biology
. Another reason for the 20-percent lag in carbon emissions reductions is that logging in recent years has been moving into denser Amazon forests, so even the reduced amount of deforestation is leading to higher carbon emissions, researchers said. U.S. scientists praised their Brazilian colleagues for the sophisticated new techniques used to tease out the differences between reduced deforestation and lagging emissions reductions. “That’s where you’d like the rest of the world to be, where Brazil is,” said Richard Houghton of the Woods Hole Research Center.
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Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.
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An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
Ugandan scientists monitor the impact of climate change on one of Africa’s most diverse forests and its extraordinary wildlife. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
video goes onto the front lines with Colorado firefighters confronting deadly blazes fueled by a hotter, drier climate. Watch the video.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.