Comparison between carbon stock measurements methdos in eucalyptus stems.

The levels of greenhouse gases (GHG) have been significantly increased since the Industrial Revolution. However, only after 1980 was that the changes in the levels of GHG were scientifically evident. This finding led to the establishment in 1988, the Intergovernmental Panel on Climate Change (IPCC). In 1997, during the Conference of the Parties (COP) held in Japan, the Kyoto Protocol was established in order to reduce the emission of GHGs mainly by industrialized countries. Among the mechanisms cited for compensation of GHG emissions there is the Clean Development Mechanism (CDM). Developing countries, e.g. Brazil, started the implementation of the CDM to generate carbon credits to be traded with developed countries, since they have committed to reduce GHG emissions. Through calculating the GHG that had their volumes avoided and/or removed from the atmosphere emissions, carbon credits are generated. Each carbon credit is equal to a stored GHG ton and/or that have not been released into the atmosphere and they may be negotiated between developed and developing countries