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sexta-feira, 13 de julho de 2012
SAVING FORESTS
[Reproduced from http://www.conservation.org/learn/climate/forests/Pages/overview.aspx]
Protecting forests has always been central to CI's mission [CI, Conservation International]. Now it is more important than ever. Did you know the burning and clearing of forests contributes approximately 16 percent of the world's greenhouse gas emissions and fuels climate change?
Human activity is the main cause of deforestation, usually tied to economic development, increasing consumption rates – in both developed and developing countries – and extractive industries such as logging.
Pristine jungles are burned and cleared for farming and ranching, or for plantations to produce biofuel crops. Cities and villages expand, prompting industrial development that supplants forests. Loggers extract more trees than the forest can reproduce, destroying ecosystems and leaving roads that invite other exploitative forces.
Science in Action: Putting out Fires
The loss is irreplaceable. Tropical forests are home to more than half of all species on Earth, and their destruction means the extinction of countless plant and wildlife species, many still unknown to science.
Burning and clearing forests emits approximately 16 percent of the greenhouse gases that cause climate change, more than all the world's cars, trucks, and airplanes combined. If left intact, these tropical forests are reservoirs of massive amounts of carbon.
IPCC-Intergovernmental Panel on Climate Change data
Protecting and restoring forests then is an essential first response to climate change. According to the IPCC, halting deforestation and restoring already degraded areas while adopting more forest-friendly agriculture and management practices would prevent the emission of more than 300 billion tons of carbon dioxide over the next 40 years. That is more than total U.S. emissions over that same period, based on current levels.
Forest Carbon Initiatives
These nature-based initiatives aid in global mitigation efforts by preserving or restoring standing forests, which absorb massive amounts of carbon from the atmosphere.
See illustrations below
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