You can't stop it absolutely, but you can in effect by taking away the economic reason that it occurs. The primary reason the deforestation is happening is to o

You can't stop it absolutely, but you can in effect by taking away the economic reason that it occurs. The primary reason the deforestation is happening is to open up land to produce agricultural products for export (primarily soy and cattle). If the importing countries cease to import the product, Brazil loses the economic reason to produce more (and as much) and open up more land via deforestation.