Pine plantations , for instance , could produce 10 to 20 times more commercial timber / hectare / year than some natural ... To evaluate the behaviour of fast growing species in selected plantations of the Central American Isthmus to ...

The devastated forests will be replanted with rapid - growing Leucaena leucocephala trees , a species of many uses ... which would complement the two others , involves the introduction of promising tree species for firewood , posts and ...