From the abstract and conclusions of this paper on civil conflict and deforestation in Colombia:
Despite a growing body of literature on how environmental degradation can fuel civil war, the reverse effect, namely that of conflict on environmental outcomes, is relatively understudied.
We study this relationship in the case of Colombia.
Our results are consistent with the idea that paramilitary militias use the following modus operandi: first, valuable territories are cleared through violent intimidation, which induces forced displacement; second, the vacated land is purchased at very low prices; and third, legal and illegal investments are instituted in those areas. Examples of end products of this process are coca crops, mineral exploitation and oil palm agriculture.
…violent conflict in Colombia has been a force that has driven and continues to drive deforestation.