Clearly you did not read the OP's comment very well Even if you make the rainforest value 0, the land is very rich and fertile, so if the native plants have a

Clearly you did not read the OP's comment very well Even if you make the rainforest value 0, the land is very rich and fertile, so if the native plants have a value of 0, they will be removed and replanted with cash crops of some kind unless you resolve the economic reality