"If you pay us we wont kill this tree"

The Business Man
The business man was able to make money from carbon offsetting whilst providing a viable solution to the vast amount of carbon being produced. Without the businessman there would be no liaison between the developing countries and the big business such as Starbucks. Without liaison then there wouldn't be any trade and carbon offsetting would cease to exist.Dor Jee Sun is businessman and will honor any deals made to pay off countries to not burn down trees. Whether he will enforce his own rules upon the governments on these countries is unknown.
The Farmer
The farmer has an individually small affect on the burning of the trees. But when all the farmer's carbon emissions and then the lack of carbon being taken in by trees is combined with all of the farmers emissions the level is critical. Without the farmer there theoretically wouldn't be anyone to burn the trees considering that the government wants to preserve the trees for multiple reasons ($ and the environment). However without the farmer then the government has no people to lead and then they have no country so as applicable as it may say to dispose of the farmer its not.
The Rescuer
The rescuer provides help and service for the injured orangutans, without rescuers then the orangutans population would decline dramatically. The rescuer is also there to show that some people still care for the environment enabling support for the environment.

Carbon Credits
Carbon credits are bough from an offsetting company in order to insure that all carbon being used by a company or person is being turned back into oxygen. Buying a carbon credit means that either trees will be planted or at the very least kept alive in order to turn your carbon back into oxygen. They are in a way blackmail to say "If you pay us we wont kill this tree"-What carbon offsetting company's are between the lines. But none the less its an effective system with the only drawback being the limited response from business as that the only incentive for them is a much "greener" product.