Are there any preventive measures against deforestation in general?

There are both globally applicable preventive measures and very location-specific ones. In general, research, environmental education, and science communication help to educate people about structures and patterns so that they can make climate-friendly decisions. Educating people about more sustainable consumption choices in Germany also has an impact on the rainforests in North and South America. 

On the ground, the aim is to minimize the drivers of destruction. The most effective preventive measure is to create alternative, sustainable sources of income, although these may look different in Canada than they do in Peru. Precisely because there is no "one size fits all" solution, it is important to take local circumstances and local knowledge into account when implementing preventive measures, so that helping people to help themselves works effectively.