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Tropical forest sustainability: A climate change boon
Date:6/13/2008

The authors Dr Pep Canadell from CSIRO and the Global Carbon Project, and Dr Michael Raupach from CSIRO say the billions of tons of carbon dioxide (CO2) absorbed annually by the world's forests represents an 'economic subsidy' for climate change mitigation worth hundreds of billions of dollars.

However, concerns about the permanence of forest carbon stocks, challenges in quantifying changes in the size of those stocks, and concerns about the environmental and socio-economic impacts of reforestation programs, have limited the adoption of policies designed to foster forestry activities. "With political will and the involvement of tropical regions, forests can contribute to both climate change protection through carbon sequestration and also enhanced economic, environmental and socio-cultural benefits," Dr Canadell says.

"Forestry activities have the economic potential to offset 2-4 per cent of projected CO2 emissions by 2030, with tropical regions accounting for nearly two thirds of the total offset".

"A key opportunity is the reduction of carbon emissions from deforestation and degradation in tropical regions," he says.

An estimated 13 million hectares of the world's forested areas almost exclusively in the tropical regions are deforested annually. Dr Raupach says, however, reducing rates of deforestation by 50 per cent by 2050, and stopping further deforestation when countries reach 50 per cent of their current forested area, would avoid emissions equivalent to six years of current fossil fuel emissions by the end of this century.

"This estimate shows that even with significant continuing deforestation, the mitigation potential is large, although major changes in governance and price incentives are required to realize this potential," Dr Raupach says.

They authors also note, however, that efforts to mitigate climate change by increasing both the overall area and volume of biota in those forests, does ca
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Contact: Dr. Pep Canadell
Pep.Canadell@csiro.au
61-262-465-631
CSIRO Australia
Source:Eurekalert

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