It is
estimated that in 2012 deforestation should account for approximately 12% of global
greenhouse gas emissions. As in previous years, most deforestation in 2012 took
place in tropical rainforests.
The newest
joint scientific work including Canadian and Dutch scientists says that the
biggest cause of global deforestation is agriculture, which is responsible for approximately
80% of worldwide deforestation. The best example is Brazil
where agriculture is actually the cause of almost all deforestation in Brazil,
with 750,000 km² of forest being already gone, and 80% of previous forest being
converted into grazing land for cattle.
The
scientists estimate that global tropical deforestation will release 1.1 billion
tons of carbon dioxide into the atmosphere in 2012.
The Amazon
rainforest still produces the most worrying effects of deforestation. This is
because Amazon rainforest is the largest rainforest in the world, which plays
key role in proper functioning of Earth's hydrological and climatological
system.
The deforestation
in Amazon isn't stopping because farmers continue to chop trees (slash and burn
technique) in order to make room for their farms.
In the
2012, as well as throughout this last decade, two countries – Brazil and Indonesia were responsible for more
than 50% of total greenhouse gas emissions from tropical deforestation.
The 2012
study by the UK scientists
from Leeds says that deforestation leads to serious
decrease in rainfall. They have calculated that the destruction of tropical
forests would reduce rainfall across the Amazon basin by 21% in the dry season
by 2050.
Our
rainforests are major carbon sinkers. The 2012 study from U.S. scientists at Boston University
says that tropical vegetation contains 21 percent more carbon than previously
thought.
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