Amazonas, like other tropical areas are much affected by this burning technique.
Not only flat areas are burned but also steep slopes and thus soil erosion can accelerate.
On a Video a man in the Amazon is introduced who have found that it is possible to earn a living without burning the forest and he is about to teach others how to do this. This man is planting trees instead. Check the video that is available on this website: http://news.mongabay.com/2013/0131-hance-werber-interview.html