This article explains how deforestation could help fight against global warming in some regions of the world in some northern latitudes, like in Siberia or Canada. However, the authors of the study are unanimous in recognizing the benefits of the rainforest on global warming.
Environment, Tuesday, April 10, 2007, p. A19
Deforestation can help against global warming Climate
AFP
Washington - Contrary to popular belief, deforestation in some parts of the world, can help fight against global warming, according to a study published United States yesterday.
Deforestation releases carbon dioxide (CO2), the main greenhouse gas and contributes to global warming but under certain latitude as Siberia, Northern Europe and Canada , where reigns the boreal forest, trees can contribute to global warming by absorbing more solar radiation, said the study published in the Reports of the Academy of Sciences USA (PNAS).
controlled deforestation of the boreal forest and its replacement by pasture and shrubs can help reverse global warming, says the study.
For cons, the deforestation of the rainforest, described by investigators as "air of the Earth", plays a significant role in warming climate.
Scientists at the Carnegie, a private research institute and the U.S. Lawrence Livermore National Laboratory in California, have computer simulated the effects of extensive deforestation around the globe and studied the negative and positive forest cover at different latitudes to arrive at these conclusions.
"A strategy for reforestation in the fight against global warming must take into account not only the fact that trees absorb CO2, but also their ability to create depending on latitude, evaporation they retain water, clouds that help to reflect heat or to absorb it by shade in colder areas where there is snow, "said Ken Caldeira, an official this study.
The researchers stressed that they did not plead for a cooler areas deforestation.
"Our study shows that only tropical forests contribute significantly to reduce the phenomenon of global warming, "said Govindasamy Bala of his side's Lawrence Livermore National Laboratory, one of the co-authors of this research.
© 2007 The Press. All rights reserved.
0 comments:
Post a Comment