Deforestation accounts for 20% of all carbon emissions

I found this in a Conversation International advertisement: "Deforestation accounts for 20% of all carbon emissions, which is twice the amount that all cars, trucks, and planes in the world emit, combined."

How do we approach that? Drive less, or drive as much and just make people in South America, Russia, and Indonesia not cut down their trees? We tend (unfairly) to do the latter.