Hmm, I'm not sure about that. The Sahara has shrunk by about 8% in the last 20 years due to increased rainfall and greening programmes. In Asia jungles and rainforests have mainly been lost to plantations of oil palms, a lot of that is used to produce biofuel to replace fossil fuels. In South America it is agricultural expansion, logging practices, infrastructure development, and illegal mining. In Australia in the last decade, clearing for wind farms has had a significant impact.